Joan LZ
type: MusicGroup
popularity: 7
followers: 37
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3f666db5477b14cb76d1e0cc638f08a526a573b33ace331a3ff95e19d7aaea6d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aaac7206-06d3-4e7b-bf90-352d93ae6373.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aaac7206-06d3-4e7b-bf90-352d93ae6373.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aaac7206-06d3-4e7b-bf90-352d93ae6373
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3f666db5477b14cb76d1e0cc638f08a526a573b33ace331a3ff95e19d7aaea6d","name":"Joan LZ","registered_at":"2026-06-20T09:37:37Z","symbol":"NIM1580707","token_address":"0x69500d87b49e3d5b6b79442d5971d5df1a8d4993","type":"artist","uuid":"aaac7206-06d3-4e7b-bf90-352d93ae6373"}
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 0x3f666db5477b14cb76d1e0cc638f08a526a573b33ace331a3ff95e19d7aaea6d. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aaac7206-06d3-4e7b-bf90-352d93ae6373.json and https://artists.proofprofile.net/proofs/artist/aaac7206-06d3-4e7b-bf90-352d93ae6373.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x3f666db5477b14cb76d1e0cc638f08a526a573b33ace331a3ff95e19d7aaea6d","name":"Joan LZ","registered_at":"2026-06-20T09:37:37Z","symbol":"NIM1580707","token_address":"0x69500d87b49e3d5b6b79442d5971d5df1a8d4993","type":"artist","uuid":"aaac7206-06d3-4e7b-bf90-352d93ae6373"}