Marques Carroll
type: MusicGroup
popularity: 8
followers: 642
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd903c1b5110ff409039d2242635051ab060711ffd902d714b63700afee89e976
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dff24e67-99d2-4834-be65-4c5b587ccf77.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dff24e67-99d2-4834-be65-4c5b587ccf77.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dff24e67-99d2-4834-be65-4c5b587ccf77
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd903c1b5110ff409039d2242635051ab060711ffd902d714b63700afee89e976","name":"Marques Carroll","registered_at":"2026-06-21T06:23:27Z","symbol":"NIM1847158","token_address":"0x3ea7a0b4e7ab53b980c447ecd855624ae8897d54","type":"artist","uuid":"dff24e67-99d2-4834-be65-4c5b587ccf77"}
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 0xd903c1b5110ff409039d2242635051ab060711ffd902d714b63700afee89e976. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dff24e67-99d2-4834-be65-4c5b587ccf77.json and https://artists.proofprofile.net/proofs/artist/dff24e67-99d2-4834-be65-4c5b587ccf77.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xd903c1b5110ff409039d2242635051ab060711ffd902d714b63700afee89e976","name":"Marques Carroll","registered_at":"2026-06-21T06:23:27Z","symbol":"NIM1847158","token_address":"0x3ea7a0b4e7ab53b980c447ecd855624ae8897d54","type":"artist","uuid":"dff24e67-99d2-4834-be65-4c5b587ccf77"}
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  type: MusicAlbum
  date published: 2018-02-02
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  type: MusicAlbum
  date published: 2021-02-19
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2021-04-16
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  type: MusicAlbum
  date published: 2021-04-16
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2022-09-16
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2025-07-22