Bert Seymour
type: MusicGroup
description: Albert Victor George Seymour (23 February 1887 – 1970)Family search (subscription required) was an English professional golfer. He had some success after World War I and won the 1921 News of the World
popularity: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4589b95fb481f22e6563414b1540eea7760d416853a2b786903c39425986022a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4589b95fb481f22e6563414b1540eea7760d416853a2b786903c39425986022a","name":"Bert Seymour","registered_at":"2026-06-20T23:22:33Z","symbol":"NIM1746522","token_address":"0x9e57720d2badd0f1bb4dcd7a5df96c4c6a26c7ec","type":"artist","uuid":"ccc94ce8-b3d2-4292-bff4-2d470cdd3525"}
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 0x4589b95fb481f22e6563414b1540eea7760d416853a2b786903c39425986022a. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525.json and https://artists.proofprofile.net/proofs/artist/ccc94ce8-b3d2-4292-bff4-2d470cdd3525.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x4589b95fb481f22e6563414b1540eea7760d416853a2b786903c39425986022a","name":"Bert Seymour","registered_at":"2026-06-20T23:22:33Z","symbol":"NIM1746522","token_address":"0x9e57720d2badd0f1bb4dcd7a5df96c4c6a26c7ec","type":"artist","uuid":"ccc94ce8-b3d2-4292-bff4-2d470cdd3525"}