Jessie Mann
type: MusicGroup
description: Janet Mann (Jessie) (20 January 1805 – 21 April 1867) was the studio assistant of the pioneering Scottish photographers David Octavius Hill and Robert Adamson. She is "a strong candidate as the first
popularity: 3
followers: 13
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x86152b7cf8180cfd5a74d7da7e475a5ea7934d6ce795d026cdc7dfdf1f72df00
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/84a839d0-0aef-4caf-8b5c-7e6b5c555811.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/84a839d0-0aef-4caf-8b5c-7e6b5c555811.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/84a839d0-0aef-4caf-8b5c-7e6b5c555811
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x86152b7cf8180cfd5a74d7da7e475a5ea7934d6ce795d026cdc7dfdf1f72df00","name":"Jessie Mann","registered_at":"2026-06-17T11:56:54Z","symbol":"NIM1388056","token_address":"0x99e1159116392f24bc41a618c19c9a5a85fa81cb","type":"artist","uuid":"84a839d0-0aef-4caf-8b5c-7e6b5c555811"}
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 0x86152b7cf8180cfd5a74d7da7e475a5ea7934d6ce795d026cdc7dfdf1f72df00. 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/84a839d0-0aef-4caf-8b5c-7e6b5c555811.json and https://artists.proofprofile.net/proofs/artist/84a839d0-0aef-4caf-8b5c-7e6b5c555811.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x86152b7cf8180cfd5a74d7da7e475a5ea7934d6ce795d026cdc7dfdf1f72df00","name":"Jessie Mann","registered_at":"2026-06-17T11:56:54Z","symbol":"NIM1388056","token_address":"0x99e1159116392f24bc41a618c19c9a5a85fa81cb","type":"artist","uuid":"84a839d0-0aef-4caf-8b5c-7e6b5c555811"}