Calypso Mama
type: MusicGroup
genre: calypso
popularity: 9
followers: 680
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf538e7be648670bfd5378f32661bba2ca2b1956f86fd171dd30f5a48a5dc28ba
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9fde294-9da1-4d72-b4f2-739c3d817207.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9fde294-9da1-4d72-b4f2-739c3d817207.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9fde294-9da1-4d72-b4f2-739c3d817207
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf538e7be648670bfd5378f32661bba2ca2b1956f86fd171dd30f5a48a5dc28ba","name":"Calypso Mama","registered_at":"2026-06-20T22:23:29Z","symbol":"NIM1733613","token_address":"0x24583eb2fd9b4a4731b2b18ae3485cc642cd800f","type":"artist","uuid":"c9fde294-9da1-4d72-b4f2-739c3d817207"}
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 0xf538e7be648670bfd5378f32661bba2ca2b1956f86fd171dd30f5a48a5dc28ba. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9fde294-9da1-4d72-b4f2-739c3d817207.json and https://artists.proofprofile.net/proofs/artist/c9fde294-9da1-4d72-b4f2-739c3d817207.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
  text: {"copyright_id":"0xf538e7be648670bfd5378f32661bba2ca2b1956f86fd171dd30f5a48a5dc28ba","name":"Calypso Mama","registered_at":"2026-06-20T22:23:29Z","symbol":"NIM1733613","token_address":"0x24583eb2fd9b4a4731b2b18ae3485cc642cd800f","type":"artist","uuid":"c9fde294-9da1-4d72-b4f2-739c3d817207"}
album: A Calypso Mama Sings
  type: MusicAlbum
  date published: 1957-01-01