Dark Jazz Cafe Assembly
type: MusicGroup
popularity: 3
followers: 86
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9aebc6a8d6fa4ab65dbbe5f35b884de405411140a38cede8ffddcfe7e33081e3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b265ac3f-f6ee-4d04-a3de-56ff44f30c99.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b265ac3f-f6ee-4d04-a3de-56ff44f30c99.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b265ac3f-f6ee-4d04-a3de-56ff44f30c99
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9aebc6a8d6fa4ab65dbbe5f35b884de405411140a38cede8ffddcfe7e33081e3","name":"Dark Jazz Cafe Assembly","registered_at":"2026-06-20T13:16:35Z","symbol":"NIM1618743","token_address":"0xd5981938ca1750ad6c05da46d55bd87f82fbde34","type":"artist","uuid":"b265ac3f-f6ee-4d04-a3de-56ff44f30c99"}
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 0x9aebc6a8d6fa4ab65dbbe5f35b884de405411140a38cede8ffddcfe7e33081e3. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b265ac3f-f6ee-4d04-a3de-56ff44f30c99.json and https://artists.proofprofile.net/proofs/artist/b265ac3f-f6ee-4d04-a3de-56ff44f30c99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x9aebc6a8d6fa4ab65dbbe5f35b884de405411140a38cede8ffddcfe7e33081e3","name":"Dark Jazz Cafe Assembly","registered_at":"2026-06-20T13:16:35Z","symbol":"NIM1618743","token_address":"0xd5981938ca1750ad6c05da46d55bd87f82fbde34","type":"artist","uuid":"b265ac3f-f6ee-4d04-a3de-56ff44f30c99"}
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  type: MusicAlbum
  date published: 2022-08-23
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  type: MusicAlbum
  date published: 2022-11-14
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  type: MusicAlbum
  date published: 2022-12-26
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  type: MusicAlbum
  date published: 2023-04-16
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  type: MusicAlbum
  date published: 2024-03-14
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  type: MusicAlbum
  date published: 2025-10-17