John Sherman
type: MusicGroup
genre: celtic
description: John Sherman (May 10, 1823October 22, 1900) was an American politician from Ohio who served in federal office throughout the Civil War and into the late nineteenth century. A member of the Republican
popularity: 2
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a2273d7fe4cac8fd2b80264becc31b3232b3f5994f2906f431435505a6f1dfb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b119fbec-fc6e-4cef-b473-792a2ee309b8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b119fbec-fc6e-4cef-b473-792a2ee309b8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b119fbec-fc6e-4cef-b473-792a2ee309b8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5a2273d7fe4cac8fd2b80264becc31b3232b3f5994f2906f431435505a6f1dfb","name":"John Sherman","registered_at":"2026-06-20T12:12:15Z","symbol":"NIM1609841","token_address":"0x5bb9aec5c726bda54f2bcd06ee43fa4536808784","type":"artist","uuid":"b119fbec-fc6e-4cef-b473-792a2ee309b8"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2273d7fe4cac8fd2b80264becc31b3232b3f5994f2906f431435505a6f1dfb. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b119fbec-fc6e-4cef-b473-792a2ee309b8.json and https://artists.proofprofile.net/proofs/artist/b119fbec-fc6e-4cef-b473-792a2ee309b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x5a2273d7fe4cac8fd2b80264becc31b3232b3f5994f2906f431435505a6f1dfb","name":"John Sherman","registered_at":"2026-06-20T12:12:15Z","symbol":"NIM1609841","token_address":"0x5bb9aec5c726bda54f2bcd06ee43fa4536808784","type":"artist","uuid":"b119fbec-fc6e-4cef-b473-792a2ee309b8"}