Walter Lang Trio
type: MusicGroup
genre: cool jazz
genre: jazz
popularity: 9
followers: 691
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x667c5dcff855716cb1fb8a04e62589e343ba0963f37d14c0da2bbdce9a23b489
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/065d298e-d37d-4a2a-988b-e4def30d35e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/065d298e-d37d-4a2a-988b-e4def30d35e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/065d298e-d37d-4a2a-988b-e4def30d35e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x667c5dcff855716cb1fb8a04e62589e343ba0963f37d14c0da2bbdce9a23b489","name":"Walter Lang Trio","registered_at":"2026-06-15T15:39:04Z","symbol":"NIM0753845","token_address":"0x0bd475750afba42c4e0e11f11992bfb36e1932cc","type":"artist","uuid":"065d298e-d37d-4a2a-988b-e4def30d35e9"}
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 0x667c5dcff855716cb1fb8a04e62589e343ba0963f37d14c0da2bbdce9a23b489. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/065d298e-d37d-4a2a-988b-e4def30d35e9.json and https://artists.proofprofile.net/proofs/artist/065d298e-d37d-4a2a-988b-e4def30d35e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0x667c5dcff855716cb1fb8a04e62589e343ba0963f37d14c0da2bbdce9a23b489","name":"Walter Lang Trio","registered_at":"2026-06-15T15:39:04Z","symbol":"NIM0753845","token_address":"0x0bd475750afba42c4e0e11f11992bfb36e1932cc","type":"artist","uuid":"065d298e-d37d-4a2a-988b-e4def30d35e9"}
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