Men's choir
type: MusicGroup
genre: gregorian chant
popularity: 27
followers: 165
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b90e7d49e3310209075503bb937b6f2083d6f83fbeb9e784e265b2a1914585b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953423
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953423
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T21:20:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8b90e7d49e3310209075503bb937b6f2083d6f83fbeb9e784e265b2a1914585b","name":"Men's choir","registered_at":"2026-06-11T23:03:20Z","symbol":"NIM0130474","token_address":"0xaed92687556238dba708908720d1f1c58eb437a3","type":"artist","uuid":"63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c"}
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 0x8b90e7d49e3310209075503bb937b6f2083d6f83fbeb9e784e265b2a1914585b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c.json and https://artists.proofprofile.net/proofs/artist/63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
  text: {"copyright_id":"0x8b90e7d49e3310209075503bb937b6f2083d6f83fbeb9e784e265b2a1914585b","name":"Men's choir","registered_at":"2026-06-11T23:03:20Z","symbol":"NIM0130474","token_address":"0xaed92687556238dba708908720d1f1c58eb437a3","type":"artist","uuid":"63c8462a-0af9-4c4d-a7c9-0d72ce1dfd8c"}