Os Fonsecas
type: MusicGroup
popularity: 2
followers: 713
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x02905084d02f0c126b885cb534bee12846a2b185ca3ce5ba699557252a516362
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954038
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954038
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3dc00de2-a6a3-40c6-9733-5714d4042a8c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3dc00de2-a6a3-40c6-9733-5714d4042a8c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3dc00de2-a6a3-40c6-9733-5714d4042a8c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:57:22Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x02905084d02f0c126b885cb534bee12846a2b185ca3ce5ba699557252a516362","name":"Os Fonsecas","registered_at":"2026-06-16T11:08:41Z","symbol":"NIM1033037","token_address":"0x429d65ffa8146b37edf08daac210fd4de6d5fe60","type":"artist","uuid":"3dc00de2-a6a3-40c6-9733-5714d4042a8c"}
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 0x02905084d02f0c126b885cb534bee12846a2b185ca3ce5ba699557252a516362. Chain 2 (Bitcoin): anchored in block 954038 (2026-06-17T02:57:22Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc00de2-a6a3-40c6-9733-5714d4042a8c.json and https://artists.proofprofile.net/proofs/artist/3dc00de2-a6a3-40c6-9733-5714d4042a8c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T02:57:22Z
  text: {"copyright_id":"0x02905084d02f0c126b885cb534bee12846a2b185ca3ce5ba699557252a516362","name":"Os Fonsecas","registered_at":"2026-06-16T11:08:41Z","symbol":"NIM1033037","token_address":"0x429d65ffa8146b37edf08daac210fd4de6d5fe60","type":"artist","uuid":"3dc00de2-a6a3-40c6-9733-5714d4042a8c"}
album: Fundo da Meia
  type: MusicAlbum
  date published: 2020-10-02
album: João
  type: MusicAlbum
  date published: 2023-10-20
album: Vendaval
  type: MusicAlbum
  date published: 2024-05-03
album: Estranho Pra Vizinha
  type: MusicAlbum
  date published: 2024-05-24