O.B. Buchana
type: MusicGroup
description: O.B. Buchana is an American blues singer and musician. He was born in Mound Bayou, Mississippi, and grew up in Clarksdale, Mississippi, beginning singing gospel songs from the age of eight."O. B. Buc
popularity: 9
followers: 155
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1d6a23e37b1690d33a24a13c0603f609eeffae77a3c5249698d3de3786380e23
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954014
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954014
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/357cff18-a33e-471f-89c3-21cc3275eea5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/357cff18-a33e-471f-89c3-21cc3275eea5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/357cff18-a33e-471f-89c3-21cc3275eea5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:46:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1d6a23e37b1690d33a24a13c0603f609eeffae77a3c5249698d3de3786380e23","name":"O.B. Buchana","registered_at":"2026-06-16T08:10:53Z","symbol":"NIM0990619","token_address":"0xc39b8e7df3a143b346e859400953c3aed2aea7ef","type":"artist","uuid":"357cff18-a33e-471f-89c3-21cc3275eea5"}
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 0x1d6a23e37b1690d33a24a13c0603f609eeffae77a3c5249698d3de3786380e23. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/357cff18-a33e-471f-89c3-21cc3275eea5.json and https://artists.proofprofile.net/proofs/artist/357cff18-a33e-471f-89c3-21cc3275eea5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x1d6a23e37b1690d33a24a13c0603f609eeffae77a3c5249698d3de3786380e23","name":"O.B. Buchana","registered_at":"2026-06-16T08:10:53Z","symbol":"NIM0990619","token_address":"0xc39b8e7df3a143b346e859400953c3aed2aea7ef","type":"artist","uuid":"357cff18-a33e-471f-89c3-21cc3275eea5"}