Nagoya Children's Choir
type: MusicGroup
genre: choral
popularity: 8
followers: 218
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78c54937bb6cde3b0cacd5c320b778d9fe1534a65a867cb45948cbf3b2c9d62c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8051e71b-8557-4927-8349-d2333c378c7c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8051e71b-8557-4927-8349-d2333c378c7c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8051e71b-8557-4927-8349-d2333c378c7c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x78c54937bb6cde3b0cacd5c320b778d9fe1534a65a867cb45948cbf3b2c9d62c","name":"Nagoya Children's Choir","registered_at":"2026-06-17T10:45:25Z","symbol":"NIM1371007","token_address":"0x7a3ca6991d883b678ce7190170a41f81fcc4418f","type":"artist","uuid":"8051e71b-8557-4927-8349-d2333c378c7c"}
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 0x78c54937bb6cde3b0cacd5c320b778d9fe1534a65a867cb45948cbf3b2c9d62c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8051e71b-8557-4927-8349-d2333c378c7c.json and https://artists.proofprofile.net/proofs/artist/8051e71b-8557-4927-8349-d2333c378c7c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x78c54937bb6cde3b0cacd5c320b778d9fe1534a65a867cb45948cbf3b2c9d62c","name":"Nagoya Children's Choir","registered_at":"2026-06-17T10:45:25Z","symbol":"NIM1371007","token_address":"0x7a3ca6991d883b678ce7190170a41f81fcc4418f","type":"artist","uuid":"8051e71b-8557-4927-8349-d2333c378c7c"}
album: Japanese Songs For Children's Choir
  type: MusicAlbum
  date published: 2009-12-21
album: わらべうたづくし―児童合唱のための日本の唄2―
  type: MusicAlbum
  date published: 2016-12-21