Slovak Chamber Choir
type: MusicGroup
genre: opera
popularity: 26
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x37446d6d1a421df5358038e3855b57f5de7492ee574e90e07a78bf2c28a04753
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/418f3ef3-4018-4493-96f3-5b7e804c17dd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/418f3ef3-4018-4493-96f3-5b7e804c17dd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/418f3ef3-4018-4493-96f3-5b7e804c17dd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x37446d6d1a421df5358038e3855b57f5de7492ee574e90e07a78bf2c28a04753","name":"Slovak Chamber Choir","registered_at":"2026-06-11T17:40:03Z","symbol":"NIM0084959","token_address":"0x260f1783863f114ce36b13ebf9836b1a49d104a6","type":"artist","uuid":"418f3ef3-4018-4493-96f3-5b7e804c17dd"}
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 0x37446d6d1a421df5358038e3855b57f5de7492ee574e90e07a78bf2c28a04753. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/418f3ef3-4018-4493-96f3-5b7e804c17dd.json and https://artists.proofprofile.net/proofs/artist/418f3ef3-4018-4493-96f3-5b7e804c17dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x37446d6d1a421df5358038e3855b57f5de7492ee574e90e07a78bf2c28a04753","name":"Slovak Chamber Choir","registered_at":"2026-06-11T17:40:03Z","symbol":"NIM0084959","token_address":"0x260f1783863f114ce36b13ebf9836b1a49d104a6","type":"artist","uuid":"418f3ef3-4018-4493-96f3-5b7e804c17dd"}