Marcio D'Guia
type: MusicGroup
popularity: 7
followers: 333
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x26d4e0d760303bcb44a9a2f916d1b49ee85a2c1fad64d99567d8db22def1da56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b10b5ad2-05dd-47b2-abfd-94d6e14165fb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b10b5ad2-05dd-47b2-abfd-94d6e14165fb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b10b5ad2-05dd-47b2-abfd-94d6e14165fb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x26d4e0d760303bcb44a9a2f916d1b49ee85a2c1fad64d99567d8db22def1da56","name":"Marcio D'Guia","registered_at":"2026-06-20T12:20:09Z","symbol":"NIM1610710","token_address":"0x55ca9ef21fb55345a2fe6d26d8d10f0c05d10192","type":"artist","uuid":"b10b5ad2-05dd-47b2-abfd-94d6e14165fb"}
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 0x26d4e0d760303bcb44a9a2f916d1b49ee85a2c1fad64d99567d8db22def1da56. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b10b5ad2-05dd-47b2-abfd-94d6e14165fb.json and https://artists.proofprofile.net/proofs/artist/b10b5ad2-05dd-47b2-abfd-94d6e14165fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x26d4e0d760303bcb44a9a2f916d1b49ee85a2c1fad64d99567d8db22def1da56","name":"Marcio D'Guia","registered_at":"2026-06-20T12:20:09Z","symbol":"NIM1610710","token_address":"0x55ca9ef21fb55345a2fe6d26d8d10f0c05d10192","type":"artist","uuid":"b10b5ad2-05dd-47b2-abfd-94d6e14165fb"}
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  type: MusicAlbum
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  type: MusicAlbum
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  date published: 2021-03-29
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  type: MusicAlbum
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