Johanna Zehndner
type: MusicGroup
popularity: 14
followers: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf8223c22dde131e67f5e2bd9775101675783dbb68371692efb454e3d7ee696b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953777
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953777
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cea168c2-4f4c-47d4-bfa7-88ba49265075.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cea168c2-4f4c-47d4-bfa7-88ba49265075.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cea168c2-4f4c-47d4-bfa7-88ba49265075
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:52:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf8223c22dde131e67f5e2bd9775101675783dbb68371692efb454e3d7ee696b1","name":"Johanna Zehndner","registered_at":"2026-06-15T02:20:01Z","symbol":"NIM0651453","token_address":"0xdb1887829d9ceea4448cffd52d32cbcdde0a0256","type":"artist","uuid":"cea168c2-4f4c-47d4-bfa7-88ba49265075"}
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 0xf8223c22dde131e67f5e2bd9775101675783dbb68371692efb454e3d7ee696b1. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cea168c2-4f4c-47d4-bfa7-88ba49265075.json and https://artists.proofprofile.net/proofs/artist/cea168c2-4f4c-47d4-bfa7-88ba49265075.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:52:51Z
  text: {"copyright_id":"0xf8223c22dde131e67f5e2bd9775101675783dbb68371692efb454e3d7ee696b1","name":"Johanna Zehndner","registered_at":"2026-06-15T02:20:01Z","symbol":"NIM0651453","token_address":"0xdb1887829d9ceea4448cffd52d32cbcdde0a0256","type":"artist","uuid":"cea168c2-4f4c-47d4-bfa7-88ba49265075"}