Cẩm
type: MusicGroup
popularity: 2
followers: 109
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3b4659c35cac55f0ff60f5b7ff6aad84d7c5fdd7e72d2a8c5c23595e4be8f9f8
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/ec506d52-a480-474d-9d6f-94895a79257c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ec506d52-a480-474d-9d6f-94895a79257c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ec506d52-a480-474d-9d6f-94895a79257c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3b4659c35cac55f0ff60f5b7ff6aad84d7c5fdd7e72d2a8c5c23595e4be8f9f8","name":"Cẩm","registered_at":"2026-06-21T11:21:46Z","symbol":"NIM1906302","token_address":"0x2f2c19a37be3463aafc657af49c1ebbb459ade64","type":"artist","uuid":"ec506d52-a480-474d-9d6f-94895a79257c"}
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 0x3b4659c35cac55f0ff60f5b7ff6aad84d7c5fdd7e72d2a8c5c23595e4be8f9f8. 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/ec506d52-a480-474d-9d6f-94895a79257c.json and https://artists.proofprofile.net/proofs/artist/ec506d52-a480-474d-9d6f-94895a79257c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x3b4659c35cac55f0ff60f5b7ff6aad84d7c5fdd7e72d2a8c5c23595e4be8f9f8","name":"Cẩm","registered_at":"2026-06-21T11:21:46Z","symbol":"NIM1906302","token_address":"0x2f2c19a37be3463aafc657af49c1ebbb459ade64","type":"artist","uuid":"ec506d52-a480-474d-9d6f-94895a79257c"}
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