Matthewg
type: MusicGroup
popularity: 2
followers: 221
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x26892e9e7a492a2393d3e89fb24fc634bdf604ced62dd0b2a8cf2b5b440fb83f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953933
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953933
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/202a214e-5b51-41be-9c92-b62d05353897.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/202a214e-5b51-41be-9c92-b62d05353897.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/202a214e-5b51-41be-9c92-b62d05353897
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:13:24Z
additional property: OTSCanonicalRecord
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 0x26892e9e7a492a2393d3e89fb24fc634bdf604ced62dd0b2a8cf2b5b440fb83f. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/202a214e-5b51-41be-9c92-b62d05353897.json and https://artists.proofprofile.net/proofs/artist/202a214e-5b51-41be-9c92-b62d05353897.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:13:24Z
album: "righteous"
  type: MusicAlbum
  date published: 2020-08-21
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  type: MusicAlbum
  date published: 2021-05-07
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  type: MusicAlbum
  date published: 2021-09-16
album: tell a story
  type: MusicAlbum
  date published: 2021-12-02
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  type: MusicAlbum
  date published: 2022-03-22
album: STELLA
  type: MusicAlbum
  date published: 2022-06-19
album: TRACY & OLIVE
  type: MusicAlbum
  date published: 2022-08-26
album: D140B/MEMORY
  type: MusicAlbum
  date published: 2023-02-12
album: since you've been away/comfort
  type: MusicAlbum
  date published: 2024-02-29
album: Still
  type: MusicAlbum
  date published: 2024-11-05
album: PRURIENT/YOU'RE AFRAID
  type: MusicAlbum
  date published: 2024-12-24
album: Lingerie bottoms
  type: MusicAlbum
  date published: 2025-03-07