Hába Quartett
type: MusicGroup
genre: avant-garde
genre: chamber music
popularity: 2
followers: 44
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8de68e8402a6ccdd62699cb6ff16bcfa8c45a7234d1c8b82451a7e2fafd4db3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a20448b8-4e5e-4d78-af94-fba5bb5a63d7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a20448b8-4e5e-4d78-af94-fba5bb5a63d7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a20448b8-4e5e-4d78-af94-fba5bb5a63d7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8de68e8402a6ccdd62699cb6ff16bcfa8c45a7234d1c8b82451a7e2fafd4db3a","name":"Hába Quartett","registered_at":"2026-06-20T06:10:56Z","symbol":"NIM1535445","token_address":"0xb31d678adb0b020b7d735198525adaf328be73df","type":"artist","uuid":"a20448b8-4e5e-4d78-af94-fba5bb5a63d7"}
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 0x8de68e8402a6ccdd62699cb6ff16bcfa8c45a7234d1c8b82451a7e2fafd4db3a. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a20448b8-4e5e-4d78-af94-fba5bb5a63d7.json and https://artists.proofprofile.net/proofs/artist/a20448b8-4e5e-4d78-af94-fba5bb5a63d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x8de68e8402a6ccdd62699cb6ff16bcfa8c45a7234d1c8b82451a7e2fafd4db3a","name":"Hába Quartett","registered_at":"2026-06-20T06:10:56Z","symbol":"NIM1535445","token_address":"0xb31d678adb0b020b7d735198525adaf328be73df","type":"artist","uuid":"a20448b8-4e5e-4d78-af94-fba5bb5a63d7"}