Mr. 440
type: MusicGroup
popularity: 4
followers: 33
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xea82ea05a4bdc57e7c5f46bdac7a9eb0393488f0171fcb082d372628dcfe4d57
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ccc5160-f82d-460b-90b8-3dcf8687102a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9ccc5160-f82d-460b-90b8-3dcf8687102a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9ccc5160-f82d-460b-90b8-3dcf8687102a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xea82ea05a4bdc57e7c5f46bdac7a9eb0393488f0171fcb082d372628dcfe4d57","name":"Mr. 440","registered_at":"2026-06-20T04:13:23Z","symbol":"NIM1508709","token_address":"0x7b1cade272807c875ae796e23ed2e543175b81b5","type":"artist","uuid":"9ccc5160-f82d-460b-90b8-3dcf8687102a"}
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 0xea82ea05a4bdc57e7c5f46bdac7a9eb0393488f0171fcb082d372628dcfe4d57. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ccc5160-f82d-460b-90b8-3dcf8687102a.json and https://artists.proofprofile.net/proofs/artist/9ccc5160-f82d-460b-90b8-3dcf8687102a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0xea82ea05a4bdc57e7c5f46bdac7a9eb0393488f0171fcb082d372628dcfe4d57","name":"Mr. 440","registered_at":"2026-06-20T04:13:23Z","symbol":"NIM1508709","token_address":"0x7b1cade272807c875ae796e23ed2e543175b81b5","type":"artist","uuid":"9ccc5160-f82d-460b-90b8-3dcf8687102a"}
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