John & Mary
type: MusicGroup
genre: folk pop
genre: folk rock
description: John & Mary is a United States–based folk rock duo featuring John Lombardo and Mary Ramsey both members of alternative rock band 10,000 Maniacs. History 1989–1993 John & Mary was formed by John Lomba
popularity: 2
followers: 303
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2c0003d3339253c92b846a4083e328289e87286bc693190d4d3fe8e8b147690f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953899
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953899
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12e2b356-2c2c-4d93-ac55-c49ea1a2b769.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/12e2b356-2c2c-4d93-ac55-c49ea1a2b769.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/12e2b356-2c2c-4d93-ac55-c49ea1a2b769
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T06:37:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2c0003d3339253c92b846a4083e328289e87286bc693190d4d3fe8e8b147690f","name":"John & Mary","registered_at":"2026-06-15T20:13:10Z","symbol":"NIM0819249","token_address":"0x9a578d9d3e5599e757f169d657c2f0ab9a761841","type":"artist","uuid":"12e2b356-2c2c-4d93-ac55-c49ea1a2b769"}
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 0x2c0003d3339253c92b846a4083e328289e87286bc693190d4d3fe8e8b147690f. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12e2b356-2c2c-4d93-ac55-c49ea1a2b769.json and https://artists.proofprofile.net/proofs/artist/12e2b356-2c2c-4d93-ac55-c49ea1a2b769.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
  text: {"copyright_id":"0x2c0003d3339253c92b846a4083e328289e87286bc693190d4d3fe8e8b147690f","name":"John & Mary","registered_at":"2026-06-15T20:13:10Z","symbol":"NIM0819249","token_address":"0x9a578d9d3e5599e757f169d657c2f0ab9a761841","type":"artist","uuid":"12e2b356-2c2c-4d93-ac55-c49ea1a2b769"}
album: Victory Gardens
  type: MusicAlbum
  date published: 1991
album: The Weedkiller's Daughter
  type: MusicAlbum
  date published: 1993