Walter Kaufmann
type: MusicGroup
popularity: 2
followers: 174
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x88d57598aaf1a990d5987277f17d46daec68b6c36fc2e3d46e4b106c73667278
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953892
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953892
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ea7328a-f86a-41a0-981d-18b665755091.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0ea7328a-f86a-41a0-981d-18b665755091.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ea7328a-f86a-41a0-981d-18b665755091
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:01:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x88d57598aaf1a990d5987277f17d46daec68b6c36fc2e3d46e4b106c73667278","name":"Walter Kaufmann","registered_at":"2026-06-15T18:35:32Z","symbol":"NIM0795964","token_address":"0xd9add85c95b1e5ad9575756f465fccedba4e4f58","type":"artist","uuid":"0ea7328a-f86a-41a0-981d-18b665755091"}
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 0x88d57598aaf1a990d5987277f17d46daec68b6c36fc2e3d46e4b106c73667278. Chain 2 (Bitcoin): anchored in block 953892 (2026-06-16T05:01:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ea7328a-f86a-41a0-981d-18b665755091.json and https://artists.proofprofile.net/proofs/artist/0ea7328a-f86a-41a0-981d-18b665755091.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T05:01:46Z
  text: {"copyright_id":"0x88d57598aaf1a990d5987277f17d46daec68b6c36fc2e3d46e4b106c73667278","name":"Walter Kaufmann","registered_at":"2026-06-15T18:35:32Z","symbol":"NIM0795964","token_address":"0xd9add85c95b1e5ad9575756f465fccedba4e4f58","type":"artist","uuid":"0ea7328a-f86a-41a0-981d-18b665755091"}
album: Kaufmann: Chamber Works
  type: MusicAlbum
  date published: 2020-08-28
album: Kaufmann: Chamber Works
  type: MusicAlbum
  date published: 2020-08-28
album: Kaufmann: Chamber Works
  type: MusicAlbum
  date published: 2020-09-01
album: Walter Kaufmann: Orchestral Works Vol. 1
  type: MusicAlbum
  date published: 2024-02-09
album: Walter Kaufmann: Indian Symphony: I. First Movement
  type: MusicAlbum
  date published: 2024-08-23
album: Kaufmann: Orchestral Works
  type: MusicAlbum
  date published: 2025-08-22