That Was Ma
type: MusicGroup
popularity: 3
followers: 155
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1db20d8dc117db7e85e94348e8bc278a6b3bd1ce00a2b975774ddb19af1ca40b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953840
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953840
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0025ee1a-50a3-4ba6-b391-a8c3900d1444.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0025ee1a-50a3-4ba6-b391-a8c3900d1444.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0025ee1a-50a3-4ba6-b391-a8c3900d1444
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:12:07Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1db20d8dc117db7e85e94348e8bc278a6b3bd1ce00a2b975774ddb19af1ca40b","name":"That Was Ma","registered_at":"2026-06-15T13:28:33Z","symbol":"NIM0724114","token_address":"0x90c8dffda11eb83a4d50d09fc8dd224df68247b2","type":"artist","uuid":"0025ee1a-50a3-4ba6-b391-a8c3900d1444"}
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 0x1db20d8dc117db7e85e94348e8bc278a6b3bd1ce00a2b975774ddb19af1ca40b. Chain 2 (Bitcoin): anchored in block 953840 (2026-06-15T22:12:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0025ee1a-50a3-4ba6-b391-a8c3900d1444.json and https://artists.proofprofile.net/proofs/artist/0025ee1a-50a3-4ba6-b391-a8c3900d1444.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:12:07Z
  text: {"copyright_id":"0x1db20d8dc117db7e85e94348e8bc278a6b3bd1ce00a2b975774ddb19af1ca40b","name":"That Was Ma","registered_at":"2026-06-15T13:28:33Z","symbol":"NIM0724114","token_address":"0x90c8dffda11eb83a4d50d09fc8dd224df68247b2","type":"artist","uuid":"0025ee1a-50a3-4ba6-b391-a8c3900d1444"}
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