Joseph Walter
type: MusicGroup
description: Joseph Walter (1783–1856) was an English marine painter in oils and watercolour, working at Bristol and Portishead. He gained notice for his portrayals of Brunel's steamships Great Western and Great B
popularity: 20
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2e76c13d5e6b5d5059e1e4dce884aa766dbac16e7b547a2d8f7d23ecbd7b8b3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953598
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953598
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d0fc699-d065-4c93-91e6-f8846c34749f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0d0fc699-d065-4c93-91e6-f8846c34749f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0d0fc699-d065-4c93-91e6-f8846c34749f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T06:40:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2e76c13d5e6b5d5059e1e4dce884aa766dbac16e7b547a2d8f7d23ecbd7b8b3a","name":"Joseph Walter","registered_at":"2026-06-14T05:49:54Z","symbol":"NIM0357993","token_address":"0x2cae6344743258946c78c067b28a8c53ec8072b8","type":"artist","uuid":"0d0fc699-d065-4c93-91e6-f8846c34749f"}
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 0x2e76c13d5e6b5d5059e1e4dce884aa766dbac16e7b547a2d8f7d23ecbd7b8b3a. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d0fc699-d065-4c93-91e6-f8846c34749f.json and https://artists.proofprofile.net/proofs/artist/0d0fc699-d065-4c93-91e6-f8846c34749f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T06:40:11Z
  text: {"copyright_id":"0x2e76c13d5e6b5d5059e1e4dce884aa766dbac16e7b547a2d8f7d23ecbd7b8b3a","name":"Joseph Walter","registered_at":"2026-06-14T05:49:54Z","symbol":"NIM0357993","token_address":"0x2cae6344743258946c78c067b28a8c53ec8072b8","type":"artist","uuid":"0d0fc699-d065-4c93-91e6-f8846c34749f"}
album: The Poor Boy
  type: MusicAlbum
  date published: 2024-09-28