Leonardo Barros
type: MusicGroup
genre: adult standards
genre: bossa nova
genre: funk rock
popularity: 4
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0952824e147c9fb5fdae02728703aeaf22b7353fcc0793786fefd770c20da3cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953972
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953972
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2aaff5ff-21ef-43b7-9d4d-57cec117aa4e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2aaff5ff-21ef-43b7-9d4d-57cec117aa4e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2aaff5ff-21ef-43b7-9d4d-57cec117aa4e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:31:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0952824e147c9fb5fdae02728703aeaf22b7353fcc0793786fefd770c20da3cc","name":"Leonardo Barros","registered_at":"2026-06-16T04:23:29Z","symbol":"NIM0936298","token_address":"0x323165ae2b11170831b6f7949ad781365d3e79fe","type":"artist","uuid":"2aaff5ff-21ef-43b7-9d4d-57cec117aa4e"}
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 0x0952824e147c9fb5fdae02728703aeaf22b7353fcc0793786fefd770c20da3cc. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2aaff5ff-21ef-43b7-9d4d-57cec117aa4e.json and https://artists.proofprofile.net/proofs/artist/2aaff5ff-21ef-43b7-9d4d-57cec117aa4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:37:07Z
  text: {"copyright_id":"0x0952824e147c9fb5fdae02728703aeaf22b7353fcc0793786fefd770c20da3cc","name":"Leonardo Barros","registered_at":"2026-06-16T04:23:29Z","symbol":"NIM0936298","token_address":"0x323165ae2b11170831b6f7949ad781365d3e79fe","type":"artist","uuid":"2aaff5ff-21ef-43b7-9d4d-57cec117aa4e"}
album: Rhythmic Rio Retreat
  type: MusicAlbum
  date published: 2024-07-08