MARK US
type: MusicGroup
genre: tech house
genre: tribal house
popularity: 3
followers: 441
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4cc84eb6413828a284dffa6a72a020baa7075be2a93bf8119c5ed7abf7ffea50
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954017
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954017
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/376c2cfd-c927-4e12-be56-a03b71da19a8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/376c2cfd-c927-4e12-be56-a03b71da19a8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/376c2cfd-c927-4e12-be56-a03b71da19a8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T23:38:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4cc84eb6413828a284dffa6a72a020baa7075be2a93bf8119c5ed7abf7ffea50","name":"MARK US","registered_at":"2026-06-16T08:53:01Z","symbol":"NIM1000671","token_address":"0x931a0116da02a2321da553c38cccb833c599e4a1","type":"artist","uuid":"376c2cfd-c927-4e12-be56-a03b71da19a8"}
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 0x4cc84eb6413828a284dffa6a72a020baa7075be2a93bf8119c5ed7abf7ffea50. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/376c2cfd-c927-4e12-be56-a03b71da19a8.json and https://artists.proofprofile.net/proofs/artist/376c2cfd-c927-4e12-be56-a03b71da19a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T23:38:33Z
  text: {"copyright_id":"0x4cc84eb6413828a284dffa6a72a020baa7075be2a93bf8119c5ed7abf7ffea50","name":"MARK US","registered_at":"2026-06-16T08:53:01Z","symbol":"NIM1000671","token_address":"0x931a0116da02a2321da553c38cccb833c599e4a1","type":"artist","uuid":"376c2cfd-c927-4e12-be56-a03b71da19a8"}
album: Nobody but You
  type: MusicAlbum
  date published: 2022-05-06
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  type: MusicAlbum
  date published: 2022-07-22
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2022-10-28
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  type: MusicAlbum
  date published: 2022-10-28
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  type: MusicAlbum
  date published: 2023-03-10
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2024-02-02
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  type: MusicAlbum
  date published: 2024-02-23
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  type: MusicAlbum
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