Mary Elizabeth MacMaster MacInnis
type: MusicGroup
popularity: 3
followers: 7
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x196ce89946e5c41ea2b49868cbb9e5f8c28b4a479bbcfeb1063f0e1a01b3e673
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x196ce89946e5c41ea2b49868cbb9e5f8c28b4a479bbcfeb1063f0e1a01b3e673","name":"Mary Elizabeth MacMaster MacInnis","registered_at":"2026-06-17T06:12:13Z","symbol":"NIM1305892","token_address":"0x9e3df4af86240a33aae8869fcba33076c7918970","type":"artist","uuid":"74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6"}
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 0x196ce89946e5c41ea2b49868cbb9e5f8c28b4a479bbcfeb1063f0e1a01b3e673. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6.json and https://artists.proofprofile.net/proofs/artist/74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x196ce89946e5c41ea2b49868cbb9e5f8c28b4a479bbcfeb1063f0e1a01b3e673","name":"Mary Elizabeth MacMaster MacInnis","registered_at":"2026-06-17T06:12:13Z","symbol":"NIM1305892","token_address":"0x9e3df4af86240a33aae8869fcba33076c7918970","type":"artist","uuid":"74b8e69c-0e68-475b-bdbe-e8a6b1fde6c6"}