Ludwig Chamber Players
type: MusicGroup
genre: chamber music
popularity: 2
followers: 32
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x99548d02ad33072d7bd629d307c6c2235990f5e024c33f2f4db0072793943e74
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954593
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954593
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bdf9d704-3f56-4c06-bef1-7b2f91c372c3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bdf9d704-3f56-4c06-bef1-7b2f91c372c3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bdf9d704-3f56-4c06-bef1-7b2f91c372c3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:46:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x99548d02ad33072d7bd629d307c6c2235990f5e024c33f2f4db0072793943e74","name":"Ludwig Chamber Players","registered_at":"2026-06-20T18:27:07Z","symbol":"NIM1677266","token_address":"0xf2cbfdcf21c051c48f9eeb22d00c74579e1e0cf3","type":"artist","uuid":"bdf9d704-3f56-4c06-bef1-7b2f91c372c3"}
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 0x99548d02ad33072d7bd629d307c6c2235990f5e024c33f2f4db0072793943e74. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bdf9d704-3f56-4c06-bef1-7b2f91c372c3.json and https://artists.proofprofile.net/proofs/artist/bdf9d704-3f56-4c06-bef1-7b2f91c372c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:46:01Z
  text: {"copyright_id":"0x99548d02ad33072d7bd629d307c6c2235990f5e024c33f2f4db0072793943e74","name":"Ludwig Chamber Players","registered_at":"2026-06-20T18:27:07Z","symbol":"NIM1677266","token_address":"0xf2cbfdcf21c051c48f9eeb22d00c74579e1e0cf3","type":"artist","uuid":"bdf9d704-3f56-4c06-bef1-7b2f91c372c3"}
album: Ludwig Chamber Players: Beethoven, Nielsen & Brahms
  type: MusicAlbum
  date published: 2014-04-22