Mary Blueberry
type: MusicGroup
popularity: 3
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c9c873c73abd598ddc5a59de95b62c1a2ebda1a1171ea1b4c0d35c6a3be268e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953928
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953928
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1def9297-7144-4f9f-b78e-d973e7d39823.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1def9297-7144-4f9f-b78e-d973e7d39823.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1def9297-7144-4f9f-b78e-d973e7d39823
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:21:55Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2c9c873c73abd598ddc5a59de95b62c1a2ebda1a1171ea1b4c0d35c6a3be268e","name":"Mary Blueberry","registered_at":"2026-06-15T23:59:43Z","symbol":"NIM0873304","token_address":"0xe3ddaecf432c380d0a08d4a6b7ccf8e2c3465d2b","type":"artist","uuid":"1def9297-7144-4f9f-b78e-d973e7d39823"}
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 0x2c9c873c73abd598ddc5a59de95b62c1a2ebda1a1171ea1b4c0d35c6a3be268e. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1def9297-7144-4f9f-b78e-d973e7d39823.json and https://artists.proofprofile.net/proofs/artist/1def9297-7144-4f9f-b78e-d973e7d39823.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T10:21:55Z
  text: {"copyright_id":"0x2c9c873c73abd598ddc5a59de95b62c1a2ebda1a1171ea1b4c0d35c6a3be268e","name":"Mary Blueberry","registered_at":"2026-06-15T23:59:43Z","symbol":"NIM0873304","token_address":"0xe3ddaecf432c380d0a08d4a6b7ccf8e2c3465d2b","type":"artist","uuid":"1def9297-7144-4f9f-b78e-d973e7d39823"}