Roberta Leão
type: MusicGroup
popularity: 7
followers: 119
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdba2175e3b6cabde4855b92c24384d9001c71686a9ffb66b38bbe0d20e4d7ff7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f88a5f5c-e66c-4146-98c2-f797c984cf3b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f88a5f5c-e66c-4146-98c2-f797c984cf3b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f88a5f5c-e66c-4146-98c2-f797c984cf3b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xdba2175e3b6cabde4855b92c24384d9001c71686a9ffb66b38bbe0d20e4d7ff7","name":"Roberta Leão","registered_at":"2026-06-21T16:06:09Z","symbol":"NIM1968759","token_address":"0xc8042fa964b15bcd48d05484c83f68be2e4c978f","type":"artist","uuid":"f88a5f5c-e66c-4146-98c2-f797c984cf3b"}
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 0xdba2175e3b6cabde4855b92c24384d9001c71686a9ffb66b38bbe0d20e4d7ff7. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f88a5f5c-e66c-4146-98c2-f797c984cf3b.json and https://artists.proofprofile.net/proofs/artist/f88a5f5c-e66c-4146-98c2-f797c984cf3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:16:07Z
  text: {"copyright_id":"0xdba2175e3b6cabde4855b92c24384d9001c71686a9ffb66b38bbe0d20e4d7ff7","name":"Roberta Leão","registered_at":"2026-06-21T16:06:09Z","symbol":"NIM1968759","token_address":"0xc8042fa964b15bcd48d05484c83f68be2e4c978f","type":"artist","uuid":"f88a5f5c-e66c-4146-98c2-f797c984cf3b"}
album: Toma Toma
  type: MusicAlbum
  date published: 2023-10-20
album: Se Concentra
  type: MusicAlbum
  date published: 2024-07-18