Leandrinho MC
type: MusicGroup
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x96ac44209e7870be170ab053ebb913a249873728c3ab2ba373a2113cfd8fe516
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953978
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953978
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2c344d09-6b2b-432c-bf7c-e965dbfc3304.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2c344d09-6b2b-432c-bf7c-e965dbfc3304.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2c344d09-6b2b-432c-bf7c-e965dbfc3304
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T17:11:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x96ac44209e7870be170ab053ebb913a249873728c3ab2ba373a2113cfd8fe516","name":"Leandrinho MC","registered_at":"2026-06-16T04:54:06Z","symbol":"NIM0943605","token_address":"0xa018d8f6138b0fbae09fd08384302594b4901e73","type":"artist","uuid":"2c344d09-6b2b-432c-bf7c-e965dbfc3304"}
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 0x96ac44209e7870be170ab053ebb913a249873728c3ab2ba373a2113cfd8fe516. 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/2c344d09-6b2b-432c-bf7c-e965dbfc3304.json and https://artists.proofprofile.net/proofs/artist/2c344d09-6b2b-432c-bf7c-e965dbfc3304.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0x96ac44209e7870be170ab053ebb913a249873728c3ab2ba373a2113cfd8fe516","name":"Leandrinho MC","registered_at":"2026-06-16T04:54:06Z","symbol":"NIM0943605","token_address":"0xa018d8f6138b0fbae09fd08384302594b4901e73","type":"artist","uuid":"2c344d09-6b2b-432c-bf7c-e965dbfc3304"}