Margherita Leardini
type: MusicGroup
popularity: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd8efddbb4b072da73e16404a35169c835620e90d5099bd53dd03ae4ebf9a1a2b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86df9cf3-b4c6-4b9e-9802-28a6feb3b758.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/86df9cf3-b4c6-4b9e-9802-28a6feb3b758.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/86df9cf3-b4c6-4b9e-9802-28a6feb3b758
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd8efddbb4b072da73e16404a35169c835620e90d5099bd53dd03ae4ebf9a1a2b","name":"Margherita Leardini","registered_at":"2026-06-17T12:39:37Z","symbol":"NIM1398243","token_address":"0x43a84f1721922c8911be72450c697b1fb5ab42d9","type":"artist","uuid":"86df9cf3-b4c6-4b9e-9802-28a6feb3b758"}
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 0xd8efddbb4b072da73e16404a35169c835620e90d5099bd53dd03ae4ebf9a1a2b. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86df9cf3-b4c6-4b9e-9802-28a6feb3b758.json and https://artists.proofprofile.net/proofs/artist/86df9cf3-b4c6-4b9e-9802-28a6feb3b758.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xd8efddbb4b072da73e16404a35169c835620e90d5099bd53dd03ae4ebf9a1a2b","name":"Margherita Leardini","registered_at":"2026-06-17T12:39:37Z","symbol":"NIM1398243","token_address":"0x43a84f1721922c8911be72450c697b1fb5ab42d9","type":"artist","uuid":"86df9cf3-b4c6-4b9e-9802-28a6feb3b758"}