Matt Langley
type: MusicGroup
popularity: 3
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x09943cca439476affefa36f8c909be38678977ed83042775a53cce26e976e05d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4140da44-c915-430f-bae6-befd6db2721c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4140da44-c915-430f-bae6-befd6db2721c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4140da44-c915-430f-bae6-befd6db2721c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x09943cca439476affefa36f8c909be38678977ed83042775a53cce26e976e05d","name":"Matt Langley","registered_at":"2026-06-16T12:34:21Z","symbol":"NIM1053474","token_address":"0xb6177f6aae826b1f1a2459e799cb30f8fd4cb53f","type":"artist","uuid":"4140da44-c915-430f-bae6-befd6db2721c"}
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 0x09943cca439476affefa36f8c909be38678977ed83042775a53cce26e976e05d. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4140da44-c915-430f-bae6-befd6db2721c.json and https://artists.proofprofile.net/proofs/artist/4140da44-c915-430f-bae6-befd6db2721c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0x09943cca439476affefa36f8c909be38678977ed83042775a53cce26e976e05d","name":"Matt Langley","registered_at":"2026-06-16T12:34:21Z","symbol":"NIM1053474","token_address":"0xb6177f6aae826b1f1a2459e799cb30f8fd4cb53f","type":"artist","uuid":"4140da44-c915-430f-bae6-befd6db2721c"}
album: Spectre
  type: MusicAlbum
  date published: 2025-04-15
album: And So It Was
  type: MusicAlbum
  date published: 2025-04-26