Happenstance Singers
type: MusicGroup
genre: choral
popularity: 6
followers: 11
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf9ffa06166a48a7782e1b7bb32004fc6064a7d421791ca2130a516d0f2a39c27
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954638
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954638
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d38509da-fcf8-40df-be09-6d60447a1f80.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d38509da-fcf8-40df-be09-6d60447a1f80.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d38509da-fcf8-40df-be09-6d60447a1f80
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T03:45:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf9ffa06166a48a7782e1b7bb32004fc6064a7d421791ca2130a516d0f2a39c27","name":"Happenstance Singers","registered_at":"2026-06-21T01:56:55Z","symbol":"NIM1784328","token_address":"0x835e34701fd3de74db2f0a8b3b6f14366374a401","type":"artist","uuid":"d38509da-fcf8-40df-be09-6d60447a1f80"}
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 0xf9ffa06166a48a7782e1b7bb32004fc6064a7d421791ca2130a516d0f2a39c27. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d38509da-fcf8-40df-be09-6d60447a1f80.json and https://artists.proofprofile.net/proofs/artist/d38509da-fcf8-40df-be09-6d60447a1f80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T03:45:44Z
  text: {"copyright_id":"0xf9ffa06166a48a7782e1b7bb32004fc6064a7d421791ca2130a516d0f2a39c27","name":"Happenstance Singers","registered_at":"2026-06-21T01:56:55Z","symbol":"NIM1784328","token_address":"0x835e34701fd3de74db2f0a8b3b6f14366374a401","type":"artist","uuid":"d38509da-fcf8-40df-be09-6d60447a1f80"}