Piano Caviar
type: MusicGroup
popularity: 16
followers: 51
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4f8f5ebcd18ad3d23eea9ffce5beee4ab2355c6a82d4bf0a4d92a41b2bbd764
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953786
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953786
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc177955-e079-449c-902f-e28ffa3ea9a3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dc177955-e079-449c-902f-e28ffa3ea9a3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dc177955-e079-449c-902f-e28ffa3ea9a3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T12:56:12Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4f8f5ebcd18ad3d23eea9ffce5beee4ab2355c6a82d4bf0a4d92a41b2bbd764","name":"Piano Caviar","registered_at":"2026-06-15T03:33:45Z","symbol":"NIM0669047","token_address":"0x472527e0489ed00475180d524f5dbd5a23fbc502","type":"artist","uuid":"dc177955-e079-449c-902f-e28ffa3ea9a3"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f8f5ebcd18ad3d23eea9ffce5beee4ab2355c6a82d4bf0a4d92a41b2bbd764. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc177955-e079-449c-902f-e28ffa3ea9a3.json and https://artists.proofprofile.net/proofs/artist/dc177955-e079-449c-902f-e28ffa3ea9a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T12:56:12Z
  text: {"copyright_id":"0xd4f8f5ebcd18ad3d23eea9ffce5beee4ab2355c6a82d4bf0a4d92a41b2bbd764","name":"Piano Caviar","registered_at":"2026-06-15T03:33:45Z","symbol":"NIM0669047","token_address":"0x472527e0489ed00475180d524f5dbd5a23fbc502","type":"artist","uuid":"dc177955-e079-449c-902f-e28ffa3ea9a3"}
album: Caviar Song
  type: MusicAlbum
  date published: 2024-10-15