Cat Sandison
type: MusicGroup
popularity: 4
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcf3c41a86120a9aaa172fdd966b601321a4609f504fff81d863efd817ac870db
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953941
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953941
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21072bf5-378c-4f21-8964-550724903117.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/21072bf5-378c-4f21-8964-550724903117.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/21072bf5-378c-4f21-8964-550724903117
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:51:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcf3c41a86120a9aaa172fdd966b601321a4609f504fff81d863efd817ac870db","name":"Cat Sandison","registered_at":"2026-06-16T01:03:57Z","symbol":"NIM0888632","token_address":"0xa8e9f673e2e9d9990bcc87a5e55fb772302bb21e","type":"artist","uuid":"21072bf5-378c-4f21-8964-550724903117"}
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 0xcf3c41a86120a9aaa172fdd966b601321a4609f504fff81d863efd817ac870db. Chain 2 (Bitcoin): anchored in block 953941 (2026-06-16T11:51:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21072bf5-378c-4f21-8964-550724903117.json and https://artists.proofprofile.net/proofs/artist/21072bf5-378c-4f21-8964-550724903117.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:51:19Z
  text: {"copyright_id":"0xcf3c41a86120a9aaa172fdd966b601321a4609f504fff81d863efd817ac870db","name":"Cat Sandison","registered_at":"2026-06-16T01:03:57Z","symbol":"NIM0888632","token_address":"0xa8e9f673e2e9d9990bcc87a5e55fb772302bb21e","type":"artist","uuid":"21072bf5-378c-4f21-8964-550724903117"}
album: Grow
  type: MusicAlbum
  date published: 2023-03-03