Members of The Vienna String Quartet
type: MusicGroup
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x957ce8f55600441c0503270dfff94a0e75ad280efd9b3b048c3153d5b407387b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x957ce8f55600441c0503270dfff94a0e75ad280efd9b3b048c3153d5b407387b","name":"Members of The Vienna String Quartet","registered_at":"2026-06-20T03:38:06Z","symbol":"NIM1500282","token_address":"0x2d1f95097e3f63c704f4bd24fdae32e85f6a3d96","type":"artist","uuid":"9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957ce8f55600441c0503270dfff94a0e75ad280efd9b3b048c3153d5b407387b. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489.json and https://artists.proofprofile.net/proofs/artist/9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0x957ce8f55600441c0503270dfff94a0e75ad280efd9b3b048c3153d5b407387b","name":"Members of The Vienna String Quartet","registered_at":"2026-06-20T03:38:06Z","symbol":"NIM1500282","token_address":"0x2d1f95097e3f63c704f4bd24fdae32e85f6a3d96","type":"artist","uuid":"9b2f81b8-2ae4-4d29-b564-cc6f6a5d2489"}