Leandro L8
type: MusicGroup
popularity: 21
followers: 57
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c66732963ae49dfe909681611d3fe7fbf5bf9d53bc2630c0bffcb7aeb5172df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdb71d52-bd74-4031-85cc-978c4a0fb143.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cdb71d52-bd74-4031-85cc-978c4a0fb143.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cdb71d52-bd74-4031-85cc-978c4a0fb143
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2c66732963ae49dfe909681611d3fe7fbf5bf9d53bc2630c0bffcb7aeb5172df","name":"Leandro L8","registered_at":"2026-06-12T10:08:32Z","symbol":"NIM0265463","token_address":"0xe713477552526cd5067a1593afe6fcae816ae27d","type":"artist","uuid":"cdb71d52-bd74-4031-85cc-978c4a0fb143"}
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 0x2c66732963ae49dfe909681611d3fe7fbf5bf9d53bc2630c0bffcb7aeb5172df. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cdb71d52-bd74-4031-85cc-978c4a0fb143.json and https://artists.proofprofile.net/proofs/artist/cdb71d52-bd74-4031-85cc-978c4a0fb143.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x2c66732963ae49dfe909681611d3fe7fbf5bf9d53bc2630c0bffcb7aeb5172df","name":"Leandro L8","registered_at":"2026-06-12T10:08:32Z","symbol":"NIM0265463","token_address":"0xe713477552526cd5067a1593afe6fcae816ae27d","type":"artist","uuid":"cdb71d52-bd74-4031-85cc-978c4a0fb143"}
album: Joga pra Tropa
  type: MusicAlbum
  date published: 2020-09-13
album: Put*Ria Acústica #2 - Redbone
  type: MusicAlbum
  date published: 2022-03-31
album: Empurro Empurro
  type: MusicAlbum
  date published: 2022-06-24
album: Caráter
  type: MusicAlbum
  date published: 2023-06-17