Singing City Chorale
type: MusicGroup
popularity: 9
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe82521a3ad91fb252cdcdfc83e6800f4d095dd75d3781af6e9eb0cdca8c10d3d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953984
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953984
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2df83d42-8a84-4c4e-a1a9-efb244be8b79.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2df83d42-8a84-4c4e-a1a9-efb244be8b79.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2df83d42-8a84-4c4e-a1a9-efb244be8b79
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T18:08:34Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe82521a3ad91fb252cdcdfc83e6800f4d095dd75d3781af6e9eb0cdca8c10d3d","name":"Singing City Chorale","registered_at":"2026-06-16T05:32:57Z","symbol":"NIM0952897","token_address":"0xc173d490409fbb8ad7b0335128665e27f7321122","type":"artist","uuid":"2df83d42-8a84-4c4e-a1a9-efb244be8b79"}
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 0xe82521a3ad91fb252cdcdfc83e6800f4d095dd75d3781af6e9eb0cdca8c10d3d. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2df83d42-8a84-4c4e-a1a9-efb244be8b79.json and https://artists.proofprofile.net/proofs/artist/2df83d42-8a84-4c4e-a1a9-efb244be8b79.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xe82521a3ad91fb252cdcdfc83e6800f4d095dd75d3781af6e9eb0cdca8c10d3d","name":"Singing City Chorale","registered_at":"2026-06-16T05:32:57Z","symbol":"NIM0952897","token_address":"0xc173d490409fbb8ad7b0335128665e27f7321122","type":"artist","uuid":"2df83d42-8a84-4c4e-a1a9-efb244be8b79"}