Carol Sawyer
type: MusicGroup
description: Carol Sawyer is Canadian contemporary visual artist who works with photography, installation, video, and improvised music. Her work often addresses memory and the construction of history. Education
popularity: 5
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x604f92e9d0f3d98b2b718e2185cac4b40b9bb494abd96d191a7c92651b4300ca
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c699ae79-6ff2-43b6-b878-665f161262fc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c699ae79-6ff2-43b6-b878-665f161262fc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c699ae79-6ff2-43b6-b878-665f161262fc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x604f92e9d0f3d98b2b718e2185cac4b40b9bb494abd96d191a7c92651b4300ca","name":"Carol Sawyer","registered_at":"2026-06-20T21:11:47Z","symbol":"NIM1716729","token_address":"0xacc6487ac166890e647a191357a432ffc0b90037","type":"artist","uuid":"c699ae79-6ff2-43b6-b878-665f161262fc"}
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 0x604f92e9d0f3d98b2b718e2185cac4b40b9bb494abd96d191a7c92651b4300ca. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c699ae79-6ff2-43b6-b878-665f161262fc.json and https://artists.proofprofile.net/proofs/artist/c699ae79-6ff2-43b6-b878-665f161262fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
  text: {"copyright_id":"0x604f92e9d0f3d98b2b718e2185cac4b40b9bb494abd96d191a7c92651b4300ca","name":"Carol Sawyer","registered_at":"2026-06-20T21:11:47Z","symbol":"NIM1716729","token_address":"0xacc6487ac166890e647a191357a432ffc0b90037","type":"artist","uuid":"c699ae79-6ff2-43b6-b878-665f161262fc"}