Joan Evans
type: MusicGroup
description: Joan Evans may refer to: Joan Evans (art historian) (1893–1977), British art historian Joan Evans (actress) (1934–2023), American film actress Joan Evans (charity worker), Australian religious sis
popularity: 2
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1c539331186e1a0b4af3cd7a6472371d46046047e6eb8343c1cd5dd14736d15a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953877
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953877
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04f003e6-022e-4651-bb57-76d34268dbca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/04f003e6-022e-4651-bb57-76d34268dbca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/04f003e6-022e-4651-bb57-76d34268dbca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T02:39:16Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1c539331186e1a0b4af3cd7a6472371d46046047e6eb8343c1cd5dd14736d15a","name":"Joan Evans","registered_at":"2026-06-15T15:27:36Z","symbol":"NIM0751104","token_address":"0x7ffd95f89360cd2580bbc0a8b912df1e401f45d4","type":"artist","uuid":"04f003e6-022e-4651-bb57-76d34268dbca"}
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 0x1c539331186e1a0b4af3cd7a6472371d46046047e6eb8343c1cd5dd14736d15a. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04f003e6-022e-4651-bb57-76d34268dbca.json and https://artists.proofprofile.net/proofs/artist/04f003e6-022e-4651-bb57-76d34268dbca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0x1c539331186e1a0b4af3cd7a6472371d46046047e6eb8343c1cd5dd14736d15a","name":"Joan Evans","registered_at":"2026-06-15T15:27:36Z","symbol":"NIM0751104","token_address":"0x7ffd95f89360cd2580bbc0a8b912df1e401f45d4","type":"artist","uuid":"04f003e6-022e-4651-bb57-76d34268dbca"}