Cat Purring
type: MusicGroup
popularity: 33
followers: 679
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x868da314107c9a268bb6fbe6a89c52f4d07baa7d83922fa4cdd0700dba1290dd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e840d15-1e32-4629-b73b-09d7862b9af3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7e840d15-1e32-4629-b73b-09d7862b9af3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7e840d15-1e32-4629-b73b-09d7862b9af3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x868da314107c9a268bb6fbe6a89c52f4d07baa7d83922fa4cdd0700dba1290dd","name":"Cat Purring","registered_at":"2026-06-12T02:46:25Z","symbol":"NIM0163406","token_address":"0x57b7f518a99a2c5e1f5e8b4a04ab08b0d9ce36cc","type":"artist","uuid":"7e840d15-1e32-4629-b73b-09d7862b9af3"}
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 0x868da314107c9a268bb6fbe6a89c52f4d07baa7d83922fa4cdd0700dba1290dd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7e840d15-1e32-4629-b73b-09d7862b9af3.json and https://artists.proofprofile.net/proofs/artist/7e840d15-1e32-4629-b73b-09d7862b9af3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x868da314107c9a268bb6fbe6a89c52f4d07baa7d83922fa4cdd0700dba1290dd","name":"Cat Purring","registered_at":"2026-06-12T02:46:25Z","symbol":"NIM0163406","token_address":"0x57b7f518a99a2c5e1f5e8b4a04ab08b0d9ce36cc","type":"artist","uuid":"7e840d15-1e32-4629-b73b-09d7862b9af3"}
album: Cat Purring
  type: MusicAlbum
  date published: 2023-08-10
album: Meowsical Jazz Piano Symphony: Peaceful Cat Purring Moments
  type: MusicAlbum
  date published: 2025-03-15