Max Keenlyside
type: MusicGroup
genre: ragtime
popularity: 6
followers: 153
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe7b6ac165a26768a7733e37e9d9612e1b13489e862c86e33d08d397340834329
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953939
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953939
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2139fec9-56d4-4743-bf9d-ac2a9c2a4f67.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2139fec9-56d4-4743-bf9d-ac2a9c2a4f67.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2139fec9-56d4-4743-bf9d-ac2a9c2a4f67
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:40:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe7b6ac165a26768a7733e37e9d9612e1b13489e862c86e33d08d397340834329","name":"Max Keenlyside","registered_at":"2026-06-16T01:01:06Z","symbol":"NIM0887959","token_address":"0x143d86eac556f48fb1fa640dbdde3598ae9ac131","type":"artist","uuid":"2139fec9-56d4-4743-bf9d-ac2a9c2a4f67"}
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 0xe7b6ac165a26768a7733e37e9d9612e1b13489e862c86e33d08d397340834329. Chain 2 (Bitcoin): anchored in block 953939 (2026-06-16T11:40:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2139fec9-56d4-4743-bf9d-ac2a9c2a4f67.json and https://artists.proofprofile.net/proofs/artist/2139fec9-56d4-4743-bf9d-ac2a9c2a4f67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:40:13Z
  text: {"copyright_id":"0xe7b6ac165a26768a7733e37e9d9612e1b13489e862c86e33d08d397340834329","name":"Max Keenlyside","registered_at":"2026-06-16T01:01:06Z","symbol":"NIM0887959","token_address":"0x143d86eac556f48fb1fa640dbdde3598ae9ac131","type":"artist","uuid":"2139fec9-56d4-4743-bf9d-ac2a9c2a4f67"}
album: Invincible Syncopations: The New Ragtime Music of Vincent Matthew Johnson
  type: MusicAlbum
  date published: 2017-08-25