Mary Johnson
type: MusicGroup
genre: blues
genre: classic blues
genre: country blues
genre: northern soul
genre: ragtime
description: Mary Johnson may refer to: Writers Mary F. Johnson (1779–1863), English Romantic poet Mary Theresa Vidal (born Johnson, 1815–1873), English novelist Mary Coffin Johnson (1834–1928), American act
popularity: 4
followers: 255
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x551c73d9bbb14aba539adbe6097db460f52c2aa427a64d7e50b7543a45ab51a3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/813a17dc-8d21-4cd5-9a1b-485d65729da6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/813a17dc-8d21-4cd5-9a1b-485d65729da6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/813a17dc-8d21-4cd5-9a1b-485d65729da6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x551c73d9bbb14aba539adbe6097db460f52c2aa427a64d7e50b7543a45ab51a3","name":"Mary Johnson","registered_at":"2026-06-17T10:32:10Z","symbol":"NIM1367858","token_address":"0x9d9cc41450147919db1c7fe68d6acf30265c5216","type":"artist","uuid":"813a17dc-8d21-4cd5-9a1b-485d65729da6"}
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 0x551c73d9bbb14aba539adbe6097db460f52c2aa427a64d7e50b7543a45ab51a3. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/813a17dc-8d21-4cd5-9a1b-485d65729da6.json and https://artists.proofprofile.net/proofs/artist/813a17dc-8d21-4cd5-9a1b-485d65729da6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x551c73d9bbb14aba539adbe6097db460f52c2aa427a64d7e50b7543a45ab51a3","name":"Mary Johnson","registered_at":"2026-06-17T10:32:10Z","symbol":"NIM1367858","token_address":"0x9d9cc41450147919db1c7fe68d6acf30265c5216","type":"artist","uuid":"813a17dc-8d21-4cd5-9a1b-485d65729da6"}
album: Mary Johnson 1929-1936
  type: MusicAlbum
  date published: 1994
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  type: MusicAlbum
  date published: 2015-01-28
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
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