Léo Jefferson
type: MusicGroup
popularity: 2
followers: 130
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc841d768f1352c1805e1b9dbe48ca2911204b10b441186adfbe28c3d6835a5e4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953885
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b70efb7-38bd-4819-8083-cbc411d6e8df.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0b70efb7-38bd-4819-8083-cbc411d6e8df.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0b70efb7-38bd-4819-8083-cbc411d6e8df
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T04:12:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc841d768f1352c1805e1b9dbe48ca2911204b10b441186adfbe28c3d6835a5e4","name":"Léo Jefferson","registered_at":"2026-06-15T17:29:21Z","symbol":"NIM0780180","token_address":"0xd44e05462c37e54099520c4af0508a69dd7b4a8f","type":"artist","uuid":"0b70efb7-38bd-4819-8083-cbc411d6e8df"}
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 0xc841d768f1352c1805e1b9dbe48ca2911204b10b441186adfbe28c3d6835a5e4. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b70efb7-38bd-4819-8083-cbc411d6e8df.json and https://artists.proofprofile.net/proofs/artist/0b70efb7-38bd-4819-8083-cbc411d6e8df.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:12:47Z
  text: {"copyright_id":"0xc841d768f1352c1805e1b9dbe48ca2911204b10b441186adfbe28c3d6835a5e4","name":"Léo Jefferson","registered_at":"2026-06-15T17:29:21Z","symbol":"NIM0780180","token_address":"0xd44e05462c37e54099520c4af0508a69dd7b4a8f","type":"artist","uuid":"0b70efb7-38bd-4819-8083-cbc411d6e8df"}
album: Saindo da Tua Vida
  type: MusicAlbum
  date published: 2018-01-29
album: Não Consigo Parar de Te Amar
  type: MusicAlbum
  date published: 2025-02-19
album: Cão Farejador
  type: MusicAlbum
  date published: 2025-03-02