23 Male Voice Choirs
type: MusicGroup
genre: choral
popularity: 2
followers: 71
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa7ebab54ec2fe25178431358a5a5eac8e23bab2b580873fbe109c9147f7bc85a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa7ebab54ec2fe25178431358a5a5eac8e23bab2b580873fbe109c9147f7bc85a","name":"23 Male Voice Choirs","registered_at":"2026-06-21T13:08:36Z","symbol":"NIM1931254","token_address":"0xeaf9547c9b62948930c6a65026b5076d8a8d007a","type":"artist","uuid":"f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee"}
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 0xa7ebab54ec2fe25178431358a5a5eac8e23bab2b580873fbe109c9147f7bc85a. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee.json and https://artists.proofprofile.net/proofs/artist/f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xa7ebab54ec2fe25178431358a5a5eac8e23bab2b580873fbe109c9147f7bc85a","name":"23 Male Voice Choirs","registered_at":"2026-06-21T13:08:36Z","symbol":"NIM1931254","token_address":"0xeaf9547c9b62948930c6a65026b5076d8a8d007a","type":"artist","uuid":"f0e3a0aa-75d3-4892-bd1c-8b62ca5e09ee"}
album: Massed Choirs and Organs
  type: MusicAlbum
  date published: 2016-07-04