String Quartet Leone
type: MusicGroup
popularity: 5
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65c96d3487a7ccbea5f4494e01667d3dc2dc26ebe7b6616dcf5db0e8d43c5911
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/173e2002-c04a-453f-8967-e9635c0f7609.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/173e2002-c04a-453f-8967-e9635c0f7609.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/173e2002-c04a-453f-8967-e9635c0f7609
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x65c96d3487a7ccbea5f4494e01667d3dc2dc26ebe7b6616dcf5db0e8d43c5911","name":"String Quartet Leone","registered_at":"2026-06-15T21:33:52Z","symbol":"NIM0838493","token_address":"0x03eb95e8f69f43bff487c4528a346db9195f5c0d","type":"artist","uuid":"173e2002-c04a-453f-8967-e9635c0f7609"}
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 0x65c96d3487a7ccbea5f4494e01667d3dc2dc26ebe7b6616dcf5db0e8d43c5911. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/173e2002-c04a-453f-8967-e9635c0f7609.json and https://artists.proofprofile.net/proofs/artist/173e2002-c04a-453f-8967-e9635c0f7609.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0x65c96d3487a7ccbea5f4494e01667d3dc2dc26ebe7b6616dcf5db0e8d43c5911","name":"String Quartet Leone","registered_at":"2026-06-15T21:33:52Z","symbol":"NIM0838493","token_address":"0x03eb95e8f69f43bff487c4528a346db9195f5c0d","type":"artist","uuid":"173e2002-c04a-453f-8967-e9635c0f7609"}