John Sawyer
type: MusicGroup
description: John Sawyer may refer to: John G. Sawyer (1825–1898), U.S. Representative from New York John Edward Sawyer (1917–1995), academic and philanthropic administrator John Sawyer (writer) (1919–1994), Brit
popularity: 2
followers: 98
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0807085e21a76754d56e9173c30169c17579e724f3416083cd1a0c7fd353404f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0807085e21a76754d56e9173c30169c17579e724f3416083cd1a0c7fd353404f","name":"John Sawyer","registered_at":"2026-06-20T05:43:09Z","symbol":"NIM1529884","token_address":"0x1e9d0e77790bd70b4d139752c2a225b10e165611","type":"artist","uuid":"a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a"}
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 0x0807085e21a76754d56e9173c30169c17579e724f3416083cd1a0c7fd353404f. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a.json and https://artists.proofprofile.net/proofs/artist/a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x0807085e21a76754d56e9173c30169c17579e724f3416083cd1a0c7fd353404f","name":"John Sawyer","registered_at":"2026-06-20T05:43:09Z","symbol":"NIM1529884","token_address":"0x1e9d0e77790bd70b4d139752c2a225b10e165611","type":"artist","uuid":"a10dca8a-ffe0-4baf-bbfd-2754be2b7f5a"}
album: A Tribute to the Music of James Taylor
  type: MusicAlbum
  date published: 1996-01-01
album: A Tribute to Garth Brooks
  type: MusicAlbum
  date published: 1998-01-01
album: John Sawyer Performs A Tribute To James Taylor
  type: MusicAlbum
  date published: 2008-08-05
album: The Real Me
  type: MusicAlbum
  date published: 2008-09-25
album: Modern Art of Music: A Tribute to Garth Brooks
  type: MusicAlbum
  date published: 2012-01-01
album: Music & Highlights: A Tribute to Garth Brooks
  type: MusicAlbum
  date published: 2012-01-01
album: A Tribute To Garth Brooks
  type: MusicAlbum
  date published: 2012-10-17
album: A Tribute to James Taylor
  type: MusicAlbum
  date published: 2017-01-01
album: A Tribute to Garth Brooks
  type: MusicAlbum
  date published: 2017-01-01