Ludwig Gruber
type: MusicGroup
popularity: 5
followers: 67
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x90f4fd8c502581ea7101033937307b4bb7ed1d9f7adff6e3ed7f31f62fabfd5f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06263615-2c78-4d97-8cf9-8e54091cf2b7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06263615-2c78-4d97-8cf9-8e54091cf2b7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06263615-2c78-4d97-8cf9-8e54091cf2b7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x90f4fd8c502581ea7101033937307b4bb7ed1d9f7adff6e3ed7f31f62fabfd5f","name":"Ludwig Gruber","registered_at":"2026-06-15T15:39:40Z","symbol":"NIM0753986","token_address":"0x880e2ab439070dc2352de4fedf6bf12704d63c41","type":"artist","uuid":"06263615-2c78-4d97-8cf9-8e54091cf2b7"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f4fd8c502581ea7101033937307b4bb7ed1d9f7adff6e3ed7f31f62fabfd5f. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06263615-2c78-4d97-8cf9-8e54091cf2b7.json and https://artists.proofprofile.net/proofs/artist/06263615-2c78-4d97-8cf9-8e54091cf2b7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
  text: {"copyright_id":"0x90f4fd8c502581ea7101033937307b4bb7ed1d9f7adff6e3ed7f31f62fabfd5f","name":"Ludwig Gruber","registered_at":"2026-06-15T15:39:40Z","symbol":"NIM0753986","token_address":"0x880e2ab439070dc2352de4fedf6bf12704d63c41","type":"artist","uuid":"06263615-2c78-4d97-8cf9-8e54091cf2b7"}
album: Ludwig Gruber - Mei Muatterl war a Weanerin (Piano Cover)
  type: MusicAlbum
  date published: 2020