Jurandir Da Mangueira
type: MusicGroup
genre: samba
popularity: 5
followers: 179
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe80fff335c5259a5a1ecb407ccfd486d374e18947273e1466dad6f0cdbaa89fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954063
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954063
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4802aca4-b6dd-4678-8e01-9041913ee4b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4802aca4-b6dd-4678-8e01-9041913ee4b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4802aca4-b6dd-4678-8e01-9041913ee4b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:49:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe80fff335c5259a5a1ecb407ccfd486d374e18947273e1466dad6f0cdbaa89fc","name":"Jurandir Da Mangueira","registered_at":"2026-06-16T14:39:13Z","symbol":"NIM1083263","token_address":"0x7a012af98bc20ed68da5e6bba8bb568bd384074c","type":"artist","uuid":"4802aca4-b6dd-4678-8e01-9041913ee4b4"}
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 0xe80fff335c5259a5a1ecb407ccfd486d374e18947273e1466dad6f0cdbaa89fc. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4802aca4-b6dd-4678-8e01-9041913ee4b4.json and https://artists.proofprofile.net/proofs/artist/4802aca4-b6dd-4678-8e01-9041913ee4b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xe80fff335c5259a5a1ecb407ccfd486d374e18947273e1466dad6f0cdbaa89fc","name":"Jurandir Da Mangueira","registered_at":"2026-06-16T14:39:13Z","symbol":"NIM1083263","token_address":"0x7a012af98bc20ed68da5e6bba8bb568bd384074c","type":"artist","uuid":"4802aca4-b6dd-4678-8e01-9041913ee4b4"}