72106ea478
Implements NIP-61 (Nutzaps) event types following the NIP-88 structure pattern: - NutzapEvent (kind 9321): P2PK-locked Cashu token payments with proof, mint URL, unit tags - NutzapInfoEvent (kind 10019): Replaceable event for recipient preferences (mints, relays, P2PK pubkey) - NutzapRedemptionEvent (kind 7376): Token redemption history with NIP-44 encrypted content - TokenEvent (kind 7375): Unspent proof storage with NIP-44 encrypted content https://claude.ai/code/session_013tQRvZXdyh5VD11xENpNE5