feat(quartz): add experimental NIP-82 software applications

Implements draft NIP-82 in the experimental package, following the NIP-88 polls file structure. Adds three new events: - SoftwareApplicationEvent (kind 32267): parameterized replaceable event describing a software application, keyed by reverse-domain `d` tag - SoftwareReleaseEvent (kind 30063): parameterized replaceable event grouping assets under a versioned release channel - SoftwareAssetEvent (kind 3063): regular event binding an installable artifact to its sha256, mime type, platform and version metadata SoftwareApplicationEvent (32267) and SoftwareAssetEvent (3063) are registered in EventFactory. SoftwareReleaseEvent (30063) is intentionally left unregistered because that kind already maps to NIP-51 ReleaseArtifactSetEvent; callers can instantiate it directly.
2026-04-15 19:41:51 +00:00
parent 61add7f1aa
commit 129eb114a7
32 changed files with 1631 additions and 0 deletions
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.quartz.nip01Core.core.BaseAddressableEvent
+import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
+import com.vitorpamplona.quartz.nip01Core.tags.dTag.dTag
+import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.utils.TimeUtils
+
+/**
+ * NIP-82 Software Application (kind 32267).
+ *
+ * A parameterizable replaceable event describing a software application.
+ * Published per-application by the maintainer, identified by the `d` tag
+ * (usually the reverse-domain bundle id, e.g. `com.example.app`).
+ */
+@Immutable
+class SoftwareApplicationEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: Array<Array<String>>,
+    content: String,
+    sig: HexKey,
+) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig) {
+    fun appId() = dTag()
+
+    fun name() = tags.name()
+
+    fun summary() = tags.summary()
+
+    fun icon() = tags.icon()
+
+    fun images() = tags.images()
+
+    fun url() = tags.url()
+
+    fun repository() = tags.repository()
+
+    fun platforms() = tags.platforms()
+
+    fun license() = tags.license()
+
+    companion object {
+        const val KIND = 32267
+        const val ALT_DESCRIPTION = "Software application"
+
+        fun build(
+            appId: String,
+            name: String,
+            description: String = "",
+            createdAt: Long = TimeUtils.now(),
+            initializer: TagArrayBuilder<SoftwareApplicationEvent>.() -> Unit = {},
+        ) = eventTemplate(KIND, description, createdAt) {
+            dTag(appId)
+            alt(ALT_DESCRIPTION)
+            name(name)
+            initializer()
+        }
+    }
+}
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application
+
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.IconTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.ImageTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.LicenseTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.NameTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.RepositoryTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.SummaryTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.UrlTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.shared.PlatformTag
+import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.name(name: String) = addUnique(NameTag.assemble(name))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.summary(summary: String) = addUnique(SummaryTag.assemble(summary))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.icon(iconUrl: String) = addUnique(IconTag.assemble(iconUrl))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.image(imageUrl: String) = add(ImageTag.assemble(imageUrl))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.images(imageUrls: List<String>) = addAll(ImageTag.assemble(imageUrls))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.url(websiteUrl: String) = addUnique(UrlTag.assemble(websiteUrl))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.repository(repositoryUrl: String) = addUnique(RepositoryTag.assemble(repositoryUrl))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.platform(platform: String) = add(PlatformTag.assemble(platform))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.platforms(platforms: List<String>) = addAll(PlatformTag.assemble(platforms))
+
+fun TagArrayBuilder<SoftwareApplicationEvent>.license(spdxId: String) = addUnique(LicenseTag.assemble(spdxId))
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application
+
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.IconTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.ImageTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.LicenseTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.NameTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.RepositoryTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.SummaryTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags.UrlTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.shared.PlatformTag
+import com.vitorpamplona.quartz.nip01Core.core.TagArray
+
+fun TagArray.name() = firstNotNullOfOrNull(NameTag::parse)
+
+fun TagArray.summary() = firstNotNullOfOrNull(SummaryTag::parse)
+
+fun TagArray.icon() = firstNotNullOfOrNull(IconTag::parse)
+
+fun TagArray.images() = mapNotNull(ImageTag::parse)
+
+fun TagArray.url() = firstNotNullOfOrNull(UrlTag::parse)
+
+fun TagArray.repository() = firstNotNullOfOrNull(RepositoryTag::parse)
+
+fun TagArray.platforms() = mapNotNull(PlatformTag::parse)
+
+fun TagArray.license() = firstNotNullOfOrNull(LicenseTag::parse)
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+class IconTag {
+    companion object {
+        const val TAG_NAME = "icon"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(iconUrl: String) = arrayOf(TAG_NAME, iconUrl)
+    }
+}
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+class ImageTag {
+    companion object {
+        const val TAG_NAME = "image"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(imageUrl: String) = arrayOf(TAG_NAME, imageUrl)
+
+        fun assemble(imageUrls: List<String>) = imageUrls.map { assemble(it) }
+    }
+}
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/** NIP-82: `license` tag — SPDX license identifier (e.g. "MIT", "Apache-2.0"). */
+class LicenseTag {
+    companion object {
+        const val TAG_NAME = "license"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(spdxId: String) = arrayOf(TAG_NAME, spdxId)
+    }
+}
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+class NameTag {
+    companion object {
+        const val TAG_NAME = "name"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(name: String) = arrayOf(TAG_NAME, name)
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `repository` tag — source code repository URL
+ * (e.g. "https://github.com/example/android"). Must be git-cloneable.
+ */
+class RepositoryTag {
+    companion object {
+        const val TAG_NAME = "repository"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(repositoryUrl: String) = arrayOf(TAG_NAME, repositoryUrl)
+    }
+}
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+class SummaryTag {
+    companion object {
+        const val TAG_NAME = "summary"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(summary: String) = arrayOf(TAG_NAME, summary)
+    }
+}
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+class UrlTag {
+    companion object {
+        const val TAG_NAME = "url"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(url: String) = arrayOf(TAG_NAME, url)
+    }
+}
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.quartz.nip01Core.core.Event
+import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
+import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.utils.TimeUtils
+
+/**
+ * NIP-82 Software Asset (kind 3063).
+ *
+ * A regular non-replaceable event that cryptographically ties an app install
+ * artifact to a SHA-256 hash. It extends the NIP-94 kind 1063 tag set with
+ * software-asset-specific tags such as `version`, `f` (platform) and
+ * `apk_certificate_hash`.
+ */
+@Immutable
+class SoftwareAssetEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: Array<Array<String>>,
+    content: String,
+    sig: HexKey,
+) : Event(id, pubKey, createdAt, KIND, tags, content, sig) {
+    fun appId() = tags.appId()
+
+    fun url() = tags.url()
+
+    fun mimeType() = tags.mimeType()
+
+    fun hash() = tags.hash()
+
+    fun sizeInBytes() = tags.sizeInBytes()
+
+    fun version() = tags.version()
+
+    fun platforms() = tags.platforms()
+
+    fun minPlatformVersion() = tags.minPlatformVersion()
+
+    fun targetPlatformVersion() = tags.targetPlatformVersion()
+
+    fun supportedNips() = tags.supportedNips()
+
+    fun variant() = tags.variant()
+
+    fun commit() = tags.commit()
+
+    fun minAllowedVersion() = tags.minAllowedVersion()
+
+    fun versionCode() = tags.versionCode()
+
+    fun minAllowedVersionCode() = tags.minAllowedVersionCode()
+
+    fun apkCertificateHashes() = tags.apkCertificateHashes()
+
+    fun webContent() = tags.webContent()
+
+    companion object {
+        const val KIND = 3063
+        const val ALT_DESCRIPTION = "Software asset"
+
+        fun build(
+            appId: String,
+            mimeType: String,
+            hash: String,
+            version: String,
+            assetUrl: String? = null,
+            sizeInBytes: Int? = null,
+            createdAt: Long = TimeUtils.now(),
+            initializer: TagArrayBuilder<SoftwareAssetEvent>.() -> Unit = {},
+        ) = eventTemplate(KIND, "", createdAt) {
+            alt(ALT_DESCRIPTION)
+            appId(appId)
+            mimeType(mimeType)
+            hash(hash)
+            version(version)
+            assetUrl?.let { url(it) }
+            sizeInBytes?.let { sizeInBytes(it) }
+            initializer()
+        }
+    }
+}
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset
+
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.ApkCertificateHashTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.CommitTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.MinAllowedVersionCodeTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.MinAllowedVersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.MinPlatformVersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.SupportedNipTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.TargetPlatformVersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.VariantTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.VersionCodeTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.WebContentTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AppIdTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.VersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.shared.PlatformTag
+import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.HashSha256Tag
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.MimeTypeTag
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.SizeTag
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.UrlTag
+
+fun TagArrayBuilder<SoftwareAssetEvent>.appId(appId: String) = addUnique(AppIdTag.assemble(appId))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.url(url: String) = addUnique(UrlTag.assemble(url))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.mimeType(mimeType: String) = addUnique(MimeTypeTag.assemble(mimeType))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.hash(hash: String) = addUnique(HashSha256Tag.assemble(hash))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.sizeInBytes(sizeInBytes: Int) = addUnique(SizeTag.assemble(sizeInBytes))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.version(version: String) = addUnique(VersionTag.assemble(version))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.platform(platform: String) = add(PlatformTag.assemble(platform))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.platforms(platforms: List<String>) = addAll(PlatformTag.assemble(platforms))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.minPlatformVersion(version: String) = addUnique(MinPlatformVersionTag.assemble(version))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.targetPlatformVersion(version: String) = addUnique(TargetPlatformVersionTag.assemble(version))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.supportedNip(nipId: String) = add(SupportedNipTag.assemble(nipId))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.supportedNips(nipIds: List<String>) = addAll(SupportedNipTag.assemble(nipIds))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.variant(variant: String) = addUnique(VariantTag.assemble(variant))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.commit(commit: String) = addUnique(CommitTag.assemble(commit))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.minAllowedVersion(version: String) = addUnique(MinAllowedVersionTag.assemble(version))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.versionCode(versionCode: Long) = addUnique(VersionCodeTag.assemble(versionCode))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.minAllowedVersionCode(versionCode: Long) = addUnique(MinAllowedVersionCodeTag.assemble(versionCode))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.apkCertificateHash(hash: String) = add(ApkCertificateHashTag.assemble(hash))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.apkCertificateHashes(hashes: List<String>) = addAll(ApkCertificateHashTag.assemble(hashes))
+
+fun TagArrayBuilder<SoftwareAssetEvent>.webContent(url: String) = addUnique(WebContentTag.assemble(url))
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset
+
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.ApkCertificateHashTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.CommitTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.MinAllowedVersionCodeTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.MinAllowedVersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.MinPlatformVersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.SupportedNipTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.TargetPlatformVersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.VariantTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.VersionCodeTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags.WebContentTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AppIdTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.VersionTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.shared.PlatformTag
+import com.vitorpamplona.quartz.nip01Core.core.TagArray
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.HashSha256Tag
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.MimeTypeTag
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.SizeTag
+import com.vitorpamplona.quartz.nip94FileMetadata.tags.UrlTag
+
+fun TagArray.appId() = firstNotNullOfOrNull(AppIdTag::parse)
+
+fun TagArray.url() = firstNotNullOfOrNull(UrlTag::parse)
+
+fun TagArray.mimeType() = firstNotNullOfOrNull(MimeTypeTag::parse)
+
+fun TagArray.hash() = firstNotNullOfOrNull(HashSha256Tag::parse)
+
+fun TagArray.sizeInBytes() = firstNotNullOfOrNull(SizeTag::parse)
+
+fun TagArray.version() = firstNotNullOfOrNull(VersionTag::parse)
+
+fun TagArray.platforms() = mapNotNull(PlatformTag::parse)
+
+fun TagArray.minPlatformVersion() = firstNotNullOfOrNull(MinPlatformVersionTag::parse)
+
+fun TagArray.targetPlatformVersion() = firstNotNullOfOrNull(TargetPlatformVersionTag::parse)
+
+fun TagArray.supportedNips() = mapNotNull(SupportedNipTag::parse)
+
+fun TagArray.variant() = firstNotNullOfOrNull(VariantTag::parse)
+
+fun TagArray.commit() = firstNotNullOfOrNull(CommitTag::parse)
+
+fun TagArray.minAllowedVersion() = firstNotNullOfOrNull(MinAllowedVersionTag::parse)
+
+fun TagArray.versionCode() = firstNotNullOfOrNull(VersionCodeTag::parse)
+
+fun TagArray.minAllowedVersionCode() = firstNotNullOfOrNull(MinAllowedVersionCodeTag::parse)
+
+fun TagArray.apkCertificateHashes() = mapNotNull(ApkCertificateHashTag::parse)
+
+fun TagArray.webContent() = firstNotNullOfOrNull(WebContentTag::parse)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `apk_certificate_hash` tag — certificate hash of the APK signing
+ * certificate. REQUIRED for Android APK assets (may be repeated).
+ */
+class ApkCertificateHashTag {
+    companion object {
+        const val TAG_NAME = "apk_certificate_hash"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(hash: String) = arrayOf(TAG_NAME, hash)
+
+        fun assemble(hashes: List<String>) = hashes.map { assemble(it) }
+    }
+}
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/** NIP-82: `commit` tag — commit id used to build the asset (same as NIP-34). */
+class CommitTag {
+    companion object {
+        const val TAG_NAME = "commit"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(commit: String) = arrayOf(TAG_NAME, commit)
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `min_allowed_version_code` tag — minimum allowed integer version
+ * code of the asset.
+ */
+class MinAllowedVersionCodeTag {
+    companion object {
+        const val TAG_NAME = "min_allowed_version_code"
+
+        fun parse(tag: Array<String>): Long? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1].toLongOrNull()
+        }
+
+        fun assemble(versionCode: Long) = arrayOf(TAG_NAME, versionCode.toString())
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `min_allowed_version` tag — defines the minimum asset version
+ * still considered valid.
+ */
+class MinAllowedVersionTag {
+    companion object {
+        const val TAG_NAME = "min_allowed_version"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(version: String) = arrayOf(TAG_NAME, version)
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `min_platform_version` tag — minimum platform/runtime version an
+ * asset supports.
+ */
+class MinPlatformVersionTag {
+    companion object {
+        const val TAG_NAME = "min_platform_version"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(version: String) = arrayOf(TAG_NAME, version)
+    }
+}
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/** NIP-82: `supported_nip` tag — a NIP identifier supported by the software. */
+class SupportedNipTag {
+    companion object {
+        const val TAG_NAME = "supported_nip"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(nipId: String) = arrayOf(TAG_NAME, nipId)
+
+        fun assemble(nipIds: List<String>) = nipIds.map { assemble(it) }
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `target_platform_version` tag — platform/runtime version the asset
+ * was designed for.
+ */
+class TargetPlatformVersionTag {
+    companion object {
+        const val TAG_NAME = "target_platform_version"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(version: String) = arrayOf(TAG_NAME, version)
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `variant` tag — human-readable differentiator between sibling
+ * assets (e.g. "offline"), falling back to filename when omitted.
+ */
+class VariantTag {
+    companion object {
+        const val TAG_NAME = "variant"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(variant: String) = arrayOf(TAG_NAME, variant)
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `version_code` tag — integer version code (Android and others).
+ * REQUIRED for Android APK assets.
+ */
+class VersionCodeTag {
+    companion object {
+        const val TAG_NAME = "version_code"
+
+        fun parse(tag: Array<String>): Long? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1].toLongOrNull()
+        }
+
+        fun assemble(versionCode: Long) = arrayOf(TAG_NAME, versionCode.toString())
+    }
+}
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `r` tag for a Software Asset — URL of the original web content
+ * (e.g. a PWA start URL).
+ */
+class WebContentTag {
+    companion object {
+        const val TAG_NAME = "r"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(url: String) = arrayOf(TAG_NAME, url)
+    }
+}
@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.SoftwareAssetEvent
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AssetTag
+import com.vitorpamplona.quartz.nip01Core.core.BaseAddressableEvent
+import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip01Core.hints.EventHintBundle
+import com.vitorpamplona.quartz.nip01Core.hints.EventHintProvider
+import com.vitorpamplona.quartz.nip01Core.signers.eventTemplate
+import com.vitorpamplona.quartz.nip01Core.tags.dTag.dTag
+import com.vitorpamplona.quartz.nip31Alts.alt
+import com.vitorpamplona.quartz.utils.TimeUtils
+
+/**
+ * NIP-82 Software Release (kind 30063).
+ *
+ * A parameterizable replaceable event grouping a set of [SoftwareAssetEvent]s
+ * under a named release version. The `d` tag is `<app-id>@<version>` and the
+ * event's `created_at` must be the release date.
+ *
+ * NOTE: kind 30063 was also used by NIP-51 `ReleaseArtifactSetEvent`. This
+ * experimental NIP-82 event is intentionally not registered in `EventFactory`
+ * to avoid colliding with the existing registration. Callers can instantiate
+ * or wrap [SoftwareReleaseEvent] directly when they know the event is a NIP-82
+ * release.
+ */
+@Immutable
+class SoftwareReleaseEvent(
+    id: HexKey,
+    pubKey: HexKey,
+    createdAt: Long,
+    tags: Array<Array<String>>,
+    content: String,
+    sig: HexKey,
+) : BaseAddressableEvent(id, pubKey, createdAt, KIND, tags, content, sig),
+    EventHintProvider {
+    override fun eventHints() = tags.mapNotNull(AssetTag::parseAsHint)
+
+    override fun linkedEventIds() = tags.mapNotNull(AssetTag::parseId)
+
+    fun appId() = tags.appId()
+
+    fun version() = tags.version()
+
+    fun channel() = tags.channel()
+
+    fun assets() = tags.assets()
+
+    companion object {
+        const val KIND = 30063
+        const val ALT_DESCRIPTION = "Software release"
+
+        /** NIP-82 requires `d = <app-id>@<version>`. */
+        fun buildDTag(
+            appId: String,
+            version: String,
+        ) = "$appId@$version"
+
+        fun build(
+            appId: String,
+            version: String,
+            channel: String,
+            assets: List<EventHintBundle<SoftwareAssetEvent>>,
+            releaseNotes: String = "",
+            createdAt: Long = TimeUtils.now(),
+            initializer: TagArrayBuilder<SoftwareReleaseEvent>.() -> Unit = {},
+        ) = eventTemplate(KIND, releaseNotes, createdAt) {
+            dTag(buildDTag(appId, version))
+            alt(ALT_DESCRIPTION)
+            appId(appId)
+            version(version)
+            channel(channel)
+            assets(assets)
+            initializer()
+        }
+    }
+}
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release
+
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.SoftwareAssetEvent
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AppIdTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AssetTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.ChannelTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.VersionTag
+import com.vitorpamplona.quartz.nip01Core.core.TagArrayBuilder
+import com.vitorpamplona.quartz.nip01Core.hints.EventHintBundle
+
+fun TagArrayBuilder<SoftwareReleaseEvent>.appId(appId: String) = addUnique(AppIdTag.assemble(appId))
+
+fun TagArrayBuilder<SoftwareReleaseEvent>.version(version: String) = addUnique(VersionTag.assemble(version))
+
+fun TagArrayBuilder<SoftwareReleaseEvent>.channel(channel: String) = addUnique(ChannelTag.assemble(channel))
+
+fun TagArrayBuilder<SoftwareReleaseEvent>.asset(asset: EventHintBundle<SoftwareAssetEvent>) = add(AssetTag.assemble(asset))
+
+fun TagArrayBuilder<SoftwareReleaseEvent>.assets(assets: List<EventHintBundle<SoftwareAssetEvent>>) = addAll(AssetTag.assemble(assets))
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release
+
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AppIdTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.AssetTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.ChannelTag
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags.VersionTag
+import com.vitorpamplona.quartz.nip01Core.core.TagArray
+
+fun TagArray.appId() = firstNotNullOfOrNull(AppIdTag::parse)
+
+fun TagArray.version() = firstNotNullOfOrNull(VersionTag::parse)
+
+fun TagArray.channel() = firstNotNullOfOrNull(ChannelTag::parse)
+
+fun TagArray.assets() = mapNotNull(AssetTag::parse)
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `i` tag (identifier) used in a Software Release / Software Asset to
+ * point back to the Software Application's `d` tag.
+ *
+ * NOTE: here "i" stands for "identifier", not "infohash".
+ */
+class AppIdTag {
+    companion object {
+        const val TAG_NAME = "i"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(appId: String) = arrayOf(TAG_NAME, appId)
+    }
+}
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags
+
+import androidx.compose.runtime.Immutable
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.SoftwareAssetEvent
+import com.vitorpamplona.quartz.nip01Core.core.HexKey
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.nip01Core.hints.EventHintBundle
+import com.vitorpamplona.quartz.nip01Core.hints.types.EventIdHint
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.NormalizedRelayUrl
+import com.vitorpamplona.quartz.nip01Core.relay.normalizer.RelayUrlNormalizer
+import com.vitorpamplona.quartz.nip01Core.tags.events.GenericETag
+import com.vitorpamplona.quartz.utils.arrayOfNotNull
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82: `e` tag referencing a Software Asset (kind 3063) from a Software Release.
+ */
+@Immutable
+data class AssetTag(
+    override val eventId: HexKey,
+) : GenericETag {
+    override var relay: NormalizedRelayUrl? = null
+    override var author: HexKey? = null
+
+    constructor(eventId: HexKey, relayHint: NormalizedRelayUrl? = null, authorPubKeyHex: HexKey? = null) : this(eventId) {
+        this.relay = relayHint
+        this.author = authorPubKeyHex
+    }
+
+    override fun toTagArray() = assemble(eventId, relay, author)
+
+    companion object {
+        const val TAG_NAME = "e"
+
+        fun isTagged(tag: Array<String>) = tag.has(1) && tag[0] == TAG_NAME && tag[1].length == 64
+
+        fun parse(tag: Array<String>): AssetTag? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].length == 64) { return null }
+
+            val hint = tag.getOrNull(2)?.let { RelayUrlNormalizer.normalizeOrNull(it) }
+
+            return AssetTag(tag[1], hint, tag.getOrNull(3))
+        }
+
+        fun parseId(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].length == 64) { return null }
+            return tag[1]
+        }
+
+        fun parseAsHint(tag: Array<String>): EventIdHint? {
+            ensure(tag.has(2)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].length == 64) { return null }
+            ensure(tag[2].isNotEmpty()) { return null }
+
+            val hint = RelayUrlNormalizer.normalizeOrNull(tag[2])
+
+            ensure(hint != null) { return null }
+
+            return EventIdHint(tag[1], hint)
+        }
+
+        fun assemble(
+            eventId: HexKey,
+            relay: NormalizedRelayUrl?,
+            author: HexKey?,
+        ) = arrayOfNotNull(TAG_NAME, eventId, relay?.url, author)
+
+        fun assemble(eventHint: EventHintBundle<SoftwareAssetEvent>) = assemble(eventHint.event.id, eventHint.relay, eventHint.event.pubKey)
+
+        fun assemble(eventHints: List<EventHintBundle<SoftwareAssetEvent>>) = eventHints.map { assemble(it) }
+    }
+}
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82 Appendix B release channel identifiers.
+ * Custom channel identifiers MAY also be used.
+ */
+object ReleaseChannel {
+    const val MAIN = "main"
+    const val BETA = "beta"
+    const val NIGHTLY = "nightly"
+    const val DEV = "dev"
+}
+
+/** NIP-82: `c` tag — release channel identifier. */
+class ChannelTag {
+    companion object {
+        const val TAG_NAME = "c"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(channel: String) = arrayOf(TAG_NAME, channel)
+    }
+}
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.release.tags
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/** NIP-82: `version` tag — release or asset version string (e.g. "1.2.3", "v0.1.2-rc1"). */
+class VersionTag {
+    companion object {
+        const val TAG_NAME = "version"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(version: String) = arrayOf(TAG_NAME, version)
+    }
+}
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 2025 Vitor Pamplona
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
+ * Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+package com.vitorpamplona.quartz.experimental.nip82SoftwareApps.shared
+
+import com.vitorpamplona.quartz.nip01Core.core.has
+import com.vitorpamplona.quartz.utils.ensure
+
+/**
+ * NIP-82 Appendix A platform identifiers, loosely based on `uname -sm`.
+ * Publishers may also use custom values not listed here.
+ */
+object Platform {
+    const val ANDROID_ARM64_V8A = "android-arm64-v8a"
+    const val ANDROID_ARMEABI_V7A = "android-armeabi-v7a"
+    const val ANDROID_X86 = "android-x86"
+    const val ANDROID_X86_64 = "android-x86_64"
+    const val DARWIN_ARM64 = "darwin-arm64"
+    const val DARWIN_X86_64 = "darwin-x86_64"
+    const val LINUX_AARCH64 = "linux-aarch64"
+    const val LINUX_X86_64 = "linux-x86_64"
+    const val WINDOWS_AARCH64 = "windows-aarch64"
+    const val WINDOWS_X86_64 = "windows-x86_64"
+    const val IOS_ARM64 = "ios-arm64"
+    const val FREEBSD_X86_64 = "freebsd-x86_64"
+    const val FREEBSD_AARCH64 = "freebsd-aarch64"
+    const val LINUX_ARMV7L = "linux-armv7l"
+    const val LINUX_RISCV64 = "linux-riscv64"
+    const val WASM32 = "wasm32"
+    const val WASM64 = "wasm64"
+    const val WASI_WASM32 = "wasi-wasm32"
+    const val WASI_WASM64 = "wasi-wasm64"
+}
+
+/**
+ * NIP-82: `f` tag — platform identifier restricting compatibility when the MIME type
+ * alone does not fully determine the target platform. See [Platform] for known
+ * identifiers and NIP-82 Appendix A.
+ */
+class PlatformTag {
+    companion object {
+        const val TAG_NAME = "f"
+
+        fun parse(tag: Array<String>): String? {
+            ensure(tag.has(1)) { return null }
+            ensure(tag[0] == TAG_NAME) { return null }
+            ensure(tag[1].isNotEmpty()) { return null }
+            return tag[1]
+        }
+
+        fun assemble(platform: String) = arrayOf(TAG_NAME, platform)
+
+        fun assemble(platforms: List<String>) = platforms.map { assemble(it) }
+    }
+}
@@ -35,6 +35,8 @@ import com.vitorpamplona.quartz.experimental.interactiveStories.InteractiveStory
 import com.vitorpamplona.quartz.experimental.interactiveStories.InteractiveStoryReadingStateEvent
 import com.vitorpamplona.quartz.experimental.interactiveStories.InteractiveStorySceneEvent
 import com.vitorpamplona.quartz.experimental.medical.FhirResourceEvent
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.application.SoftwareApplicationEvent
+import com.vitorpamplona.quartz.experimental.nip82SoftwareApps.asset.SoftwareAssetEvent
 import com.vitorpamplona.quartz.experimental.nip95.data.FileStorageEvent
 import com.vitorpamplona.quartz.experimental.nip95.header.FileStorageHeaderEvent
 import com.vitorpamplona.quartz.experimental.nipA3.PaymentTargetsEvent
@@ -528,6 +530,8 @@ class EventFactory {
                SealedRumorEvent.KIND -> SealedRumorEvent(id, pubKey, createdAt, tags, content, sig)
                SearchRelayListEvent.KIND -> SearchRelayListEvent(id, pubKey, createdAt, tags, content, sig)
                SimpleGroupListEvent.KIND -> SimpleGroupListEvent(id, pubKey, createdAt, tags, content, sig)
+                SoftwareApplicationEvent.KIND -> SoftwareApplicationEvent(id, pubKey, createdAt, tags, content, sig)
+                SoftwareAssetEvent.KIND -> SoftwareAssetEvent(id, pubKey, createdAt, tags, content, sig)
                StallEvent.KIND -> StallEvent(id, pubKey, createdAt, tags, content, sig)
                StatusEvent.KIND -> StatusEvent(id, pubKey, createdAt, tags, content, sig)
                TextNoteEvent.KIND -> TextNoteEvent(id, pubKey, createdAt, tags, content, sig)