Midnight String Quartet
type: MusicGroup
description: The Midnight String Quartet were an easy listening chamber music quartet, consisting of two violins, a viola, and a cello, made up of students (at the time) or graduates from the University of Souther
popularity: 2
followers: 858
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x52dac33f1914d05c09497200490c00fd1d5cf9de67a58a7d539bae1abfc11456
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb473053-5afc-4829-9478-e7bca0854c39.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bb473053-5afc-4829-9478-e7bca0854c39.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bb473053-5afc-4829-9478-e7bca0854c39
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x52dac33f1914d05c09497200490c00fd1d5cf9de67a58a7d539bae1abfc11456","name":"Midnight String Quartet","registered_at":"2026-06-20T16:53:17Z","symbol":"NIM1659102","token_address":"0x28a8a894174f3617792380a219994d33b03c1989","type":"artist","uuid":"bb473053-5afc-4829-9478-e7bca0854c39"}
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 0x52dac33f1914d05c09497200490c00fd1d5cf9de67a58a7d539bae1abfc11456. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb473053-5afc-4829-9478-e7bca0854c39.json and https://artists.proofprofile.net/proofs/artist/bb473053-5afc-4829-9478-e7bca0854c39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:10:41Z
  text: {"copyright_id":"0x52dac33f1914d05c09497200490c00fd1d5cf9de67a58a7d539bae1abfc11456","name":"Midnight String Quartet","registered_at":"2026-06-20T16:53:17Z","symbol":"NIM1659102","token_address":"0x28a8a894174f3617792380a219994d33b03c1989","type":"artist","uuid":"bb473053-5afc-4829-9478-e7bca0854c39"}
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