Mary McDonald
type: MusicGroup
genre: country blues
description: Mary McDonald may refer to: Mary McDonald (composer) (born 1956), American composer Mary Frances McDonald (1929–2021), Irish feminist Mary Lou McDonald (born 1969), Irish politician See also M
popularity: 5
followers: 201
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6a00bda08feda267dc1db71915ab6eaf71c9bc48f9bce97019893a0e35ec89f0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a5836fb-876e-4105-bdd8-41c433d63497.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a5836fb-876e-4105-bdd8-41c433d63497.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9a5836fb-876e-4105-bdd8-41c433d63497
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6a00bda08feda267dc1db71915ab6eaf71c9bc48f9bce97019893a0e35ec89f0","name":"Mary McDonald","registered_at":"2026-06-17T19:31:59Z","symbol":"NIM1496592","token_address":"0xd29ef2c6045493058bb40a553b648efc2cd30ecd","type":"artist","uuid":"9a5836fb-876e-4105-bdd8-41c433d63497"}
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 0x6a00bda08feda267dc1db71915ab6eaf71c9bc48f9bce97019893a0e35ec89f0. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a5836fb-876e-4105-bdd8-41c433d63497.json and https://artists.proofprofile.net/proofs/artist/9a5836fb-876e-4105-bdd8-41c433d63497.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x6a00bda08feda267dc1db71915ab6eaf71c9bc48f9bce97019893a0e35ec89f0","name":"Mary McDonald","registered_at":"2026-06-17T19:31:59Z","symbol":"NIM1496592","token_address":"0xd29ef2c6045493058bb40a553b648efc2cd30ecd","type":"artist","uuid":"9a5836fb-876e-4105-bdd8-41c433d63497"}