A9 Songs
type: MusicGroup
popularity: 3
followers: 713
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7f3d39f73bd4e2cc5c28d0d9c1319ade6ffadab5fdca303468a9da9fd560c6ec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f24023ca-39ae-4602-936c-c8b9f13b47dc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f24023ca-39ae-4602-936c-c8b9f13b47dc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f24023ca-39ae-4602-936c-c8b9f13b47dc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7f3d39f73bd4e2cc5c28d0d9c1319ade6ffadab5fdca303468a9da9fd560c6ec","name":"A9 Songs","registered_at":"2026-06-21T13:30:13Z","symbol":"NIM1935962","token_address":"0xa6c2e6f0f2c19677a4e99e6e9c54a78cdea9e5c6","type":"artist","uuid":"f24023ca-39ae-4602-936c-c8b9f13b47dc"}
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 0x7f3d39f73bd4e2cc5c28d0d9c1319ade6ffadab5fdca303468a9da9fd560c6ec. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f24023ca-39ae-4602-936c-c8b9f13b47dc.json and https://artists.proofprofile.net/proofs/artist/f24023ca-39ae-4602-936c-c8b9f13b47dc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x7f3d39f73bd4e2cc5c28d0d9c1319ade6ffadab5fdca303468a9da9fd560c6ec","name":"A9 Songs","registered_at":"2026-06-21T13:30:13Z","symbol":"NIM1935962","token_address":"0xa6c2e6f0f2c19677a4e99e6e9c54a78cdea9e5c6","type":"artist","uuid":"f24023ca-39ae-4602-936c-c8b9f13b47dc"}
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