Maria Fumaça Rock
type: MusicGroup
popularity: 3
followers: 227
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe88ea4fcc4fc539cf7fd16764c53979b97fffa57f87cec8a1994d759e925f2eb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe88ea4fcc4fc539cf7fd16764c53979b97fffa57f87cec8a1994d759e925f2eb","name":"Maria Fumaça Rock","registered_at":"2026-06-20T04:29:08Z","symbol":"NIM1512363","token_address":"0x9c61efa5888fe5a0070c0c5c1a8ba4def2baed18","type":"artist","uuid":"9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03"}
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 0xe88ea4fcc4fc539cf7fd16764c53979b97fffa57f87cec8a1994d759e925f2eb. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03.json and https://artists.proofprofile.net/proofs/artist/9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0xe88ea4fcc4fc539cf7fd16764c53979b97fffa57f87cec8a1994d759e925f2eb","name":"Maria Fumaça Rock","registered_at":"2026-06-20T04:29:08Z","symbol":"NIM1512363","token_address":"0x9c61efa5888fe5a0070c0c5c1a8ba4def2baed18","type":"artist","uuid":"9d91ce3a-8a4b-4f9e-a784-7abc4ff88c03"}
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