Portela Sanfoneiro
type: MusicGroup
genre: forró
popularity: 3
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x629120f4a000379fe2fd5f9de27b9be2da451bb62712dea7ca3adaa0c52bc9e0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1abb91df-f099-474f-b5cc-4943717d37cc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1abb91df-f099-474f-b5cc-4943717d37cc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1abb91df-f099-474f-b5cc-4943717d37cc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x629120f4a000379fe2fd5f9de27b9be2da451bb62712dea7ca3adaa0c52bc9e0","name":"Portela Sanfoneiro","registered_at":"2026-06-15T22:50:04Z","symbol":"NIM0856658","token_address":"0xffef55ea0ab10476206c204be03eefc56b40b84d","type":"artist","uuid":"1abb91df-f099-474f-b5cc-4943717d37cc"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629120f4a000379fe2fd5f9de27b9be2da451bb62712dea7ca3adaa0c52bc9e0. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1abb91df-f099-474f-b5cc-4943717d37cc.json and https://artists.proofprofile.net/proofs/artist/1abb91df-f099-474f-b5cc-4943717d37cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x629120f4a000379fe2fd5f9de27b9be2da451bb62712dea7ca3adaa0c52bc9e0","name":"Portela Sanfoneiro","registered_at":"2026-06-15T22:50:04Z","symbol":"NIM0856658","token_address":"0xffef55ea0ab10476206c204be03eefc56b40b84d","type":"artist","uuid":"1abb91df-f099-474f-b5cc-4943717d37cc"}
album: Pra Você Voltar
  type: MusicAlbum
  date published: 2020-12-30
album: Estoque
  type: MusicAlbum
  date published: 2021-06-13
album: A Fila Andou
  type: MusicAlbum
  date published: 2024-01-03