A. Dannhauser
type: MusicGroup
popularity: 6
followers: 106
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5fea4d38ac8659e62f7912f1358555a56056d48dd40b8b5f99696acad32d91fa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/250e3900-d1b8-4295-a737-7179baf61849.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/250e3900-d1b8-4295-a737-7179baf61849.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/250e3900-d1b8-4295-a737-7179baf61849
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5fea4d38ac8659e62f7912f1358555a56056d48dd40b8b5f99696acad32d91fa","name":"A. Dannhauser","registered_at":"2026-06-16T02:30:56Z","symbol":"NIM0909420","token_address":"0xbfaf59371bc4fe783188c872a1a8cc33d47a9f29","type":"artist","uuid":"250e3900-d1b8-4295-a737-7179baf61849"}
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 0x5fea4d38ac8659e62f7912f1358555a56056d48dd40b8b5f99696acad32d91fa. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/250e3900-d1b8-4295-a737-7179baf61849.json and https://artists.proofprofile.net/proofs/artist/250e3900-d1b8-4295-a737-7179baf61849.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:18:37Z
  text: {"copyright_id":"0x5fea4d38ac8659e62f7912f1358555a56056d48dd40b8b5f99696acad32d91fa","name":"A. Dannhauser","registered_at":"2026-06-16T02:30:56Z","symbol":"NIM0909420","token_address":"0xbfaf59371bc4fe783188c872a1a8cc33d47a9f29","type":"artist","uuid":"250e3900-d1b8-4295-a737-7179baf61849"}
album: Solfège des Solfèges, Book 1: 180 Sight Singing Exercises
  type: MusicAlbum
  date published: 2016-11-25
album: Solfège des Solfèges, Book 2: 90 Sight Singing Exercises
  type: MusicAlbum
  date published: 2016-12-06