Matthew J. Rolin
type: MusicGroup
popularity: 2
followers: 582
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3ce45ff2c76f69e2d0c2d0c80ff826ccfc8b8d4f21cbd68b7b98b39b15983775
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953941
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953941
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/210859b6-ce6e-454b-9de6-895e189470da.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/210859b6-ce6e-454b-9de6-895e189470da.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/210859b6-ce6e-454b-9de6-895e189470da
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:51:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3ce45ff2c76f69e2d0c2d0c80ff826ccfc8b8d4f21cbd68b7b98b39b15983775","name":"Matthew J. Rolin","registered_at":"2026-06-16T01:08:53Z","symbol":"NIM0889810","token_address":"0xe7a932b0fb717054616ebb662afc7bb5ef2e498e","type":"artist","uuid":"210859b6-ce6e-454b-9de6-895e189470da"}
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 0x3ce45ff2c76f69e2d0c2d0c80ff826ccfc8b8d4f21cbd68b7b98b39b15983775. Chain 2 (Bitcoin): anchored in block 953941 (2026-06-16T11:51:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/210859b6-ce6e-454b-9de6-895e189470da.json and https://artists.proofprofile.net/proofs/artist/210859b6-ce6e-454b-9de6-895e189470da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:51:19Z
  text: {"copyright_id":"0x3ce45ff2c76f69e2d0c2d0c80ff826ccfc8b8d4f21cbd68b7b98b39b15983775","name":"Matthew J. Rolin","registered_at":"2026-06-16T01:08:53Z","symbol":"NIM0889810","token_address":"0xe7a932b0fb717054616ebb662afc7bb5ef2e498e","type":"artist","uuid":"210859b6-ce6e-454b-9de6-895e189470da"}
album: Matthew J. Rolin
  type: MusicAlbum
  date published: 2019-12-06
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  type: MusicAlbum
  date published: 2021-04-30
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  type: MusicAlbum
  date published: 2022-01-21
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  type: MusicAlbum
  date published: 2022-08-03
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  type: MusicAlbum
  date published: 2022-08-03
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  type: MusicAlbum
  date published: 2022-09-06
album: Fourth Street
  type: MusicAlbum
  date published: 2022-09-06
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  type: MusicAlbum
  date published: 2022-10-14
album: Passing
  type: MusicAlbum
  date published: 2022-10-14
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  type: MusicAlbum
  date published: 2023-01-11
album: Sea of Stars
  type: MusicAlbum
  date published: 2023-01-11