Sleepy Piano Man
type: MusicGroup
popularity: 3
followers: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb16665e449972a6d535068de0fc428b235716462fdb930c5437c905eea24f30
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16cb16fd-0107-4ae9-83b8-917e5dfcbcae.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16cb16fd-0107-4ae9-83b8-917e5dfcbcae.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16cb16fd-0107-4ae9-83b8-917e5dfcbcae
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeb16665e449972a6d535068de0fc428b235716462fdb930c5437c905eea24f30","name":"Sleepy Piano Man","registered_at":"2026-06-15T21:29:19Z","symbol":"NIM0837413","token_address":"0x3480bc1203fc2c0bcd0e19b070ef47b277f9fcde","type":"artist","uuid":"16cb16fd-0107-4ae9-83b8-917e5dfcbcae"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb16665e449972a6d535068de0fc428b235716462fdb930c5437c905eea24f30. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16cb16fd-0107-4ae9-83b8-917e5dfcbcae.json and https://artists.proofprofile.net/proofs/artist/16cb16fd-0107-4ae9-83b8-917e5dfcbcae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xeb16665e449972a6d535068de0fc428b235716462fdb930c5437c905eea24f30","name":"Sleepy Piano Man","registered_at":"2026-06-15T21:29:19Z","symbol":"NIM0837413","token_address":"0x3480bc1203fc2c0bcd0e19b070ef47b277f9fcde","type":"artist","uuid":"16cb16fd-0107-4ae9-83b8-917e5dfcbcae"}
album: Lullaby Piano Dreams
  type: MusicAlbum
  date published: 2023-03-31