Henna Grunholz
type: MusicGroup
popularity: 2
followers: 123
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb88d9c8d937199251c4f1bd87ac8bbf7a66898f18f0fb9db673dbadd324a4cac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95d098b3-4248-4a79-9506-34f18230bc35.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/95d098b3-4248-4a79-9506-34f18230bc35.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/95d098b3-4248-4a79-9506-34f18230bc35
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb88d9c8d937199251c4f1bd87ac8bbf7a66898f18f0fb9db673dbadd324a4cac","name":"Henna Grunholz","registered_at":"2026-06-17T17:55:15Z","symbol":"NIM1473511","token_address":"0x19467324e95aee42c71b4b38bfb063fec314c2ce","type":"artist","uuid":"95d098b3-4248-4a79-9506-34f18230bc35"}
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 0xb88d9c8d937199251c4f1bd87ac8bbf7a66898f18f0fb9db673dbadd324a4cac. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95d098b3-4248-4a79-9506-34f18230bc35.json and https://artists.proofprofile.net/proofs/artist/95d098b3-4248-4a79-9506-34f18230bc35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xb88d9c8d937199251c4f1bd87ac8bbf7a66898f18f0fb9db673dbadd324a4cac","name":"Henna Grunholz","registered_at":"2026-06-17T17:55:15Z","symbol":"NIM1473511","token_address":"0x19467324e95aee42c71b4b38bfb063fec314c2ce","type":"artist","uuid":"95d098b3-4248-4a79-9506-34f18230bc35"}
album: Eenmaal komen er tranen
  type: MusicAlbum
  date published: 2014-01-30
album: Eenmaal komen er tranen
  type: MusicAlbum
  date published: 2014-01-30
album: Bloemen Beppie
  type: MusicAlbum
  date published: 2019-02-11
album: Bloemen Beppie
  type: MusicAlbum
  date published: 2019-02-11
album: Kleine Nöella
  type: MusicAlbum
  date published: 2019-08-20
album: Kleine Nöella
  type: MusicAlbum
  date published: 2019-08-20