コロムビア男声合唱団
type: MusicGroup
genre: enka
genre: kayokyoku
popularity: 4
followers: 39
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98b9c1b3d0bf8794c0acd1692b971d7433371f5296a5c3976b4f181a48fa82ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953864
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953864
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/047d6658-076c-46ac-bf8a-844d09a1b7f3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/047d6658-076c-46ac-bf8a-844d09a1b7f3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/047d6658-076c-46ac-bf8a-844d09a1b7f3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T00:30:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x98b9c1b3d0bf8794c0acd1692b971d7433371f5296a5c3976b4f181a48fa82ad","name":"コロムビア男声合唱団","registered_at":"2026-06-15T15:18:32Z","symbol":"NIM0748942","token_address":"0x553c701c72f556730f6efb035745c31c8b168938","type":"artist","uuid":"047d6658-076c-46ac-bf8a-844d09a1b7f3"}
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 0x98b9c1b3d0bf8794c0acd1692b971d7433371f5296a5c3976b4f181a48fa82ad. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/047d6658-076c-46ac-bf8a-844d09a1b7f3.json and https://artists.proofprofile.net/proofs/artist/047d6658-076c-46ac-bf8a-844d09a1b7f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T00:30:31Z
  text: {"copyright_id":"0x98b9c1b3d0bf8794c0acd1692b971d7433371f5296a5c3976b4f181a48fa82ad","name":"コロムビア男声合唱団","registered_at":"2026-06-15T15:18:32Z","symbol":"NIM0748942","token_address":"0x553c701c72f556730f6efb035745c31c8b168938","type":"artist","uuid":"047d6658-076c-46ac-bf8a-844d09a1b7f3"}