Carmen Reppel
type: MusicGroup
genre: opera
description: Carmen Reppel is a German soprano active in both opera and concert. A member of the , she had a major international career, appearing in leading roles in over 60 operas. She also explored lesser-known
popularity: 3
followers: 25
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0d1e65a49c4c10138b48a84b105cfae7145b9e5cd95bcd1073d8d3a51cf74d7
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/24a07df4-368c-4b35-a468-ea972faf97cb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/24a07df4-368c-4b35-a468-ea972faf97cb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/24a07df4-368c-4b35-a468-ea972faf97cb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf0d1e65a49c4c10138b48a84b105cfae7145b9e5cd95bcd1073d8d3a51cf74d7","name":"Carmen Reppel","registered_at":"2026-06-16T02:19:23Z","symbol":"NIM0906658","token_address":"0x697e0ba359b282ac0c59738c10d3700defa646b3","type":"artist","uuid":"24a07df4-368c-4b35-a468-ea972faf97cb"}
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 0xf0d1e65a49c4c10138b48a84b105cfae7145b9e5cd95bcd1073d8d3a51cf74d7. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24a07df4-368c-4b35-a468-ea972faf97cb.json and https://artists.proofprofile.net/proofs/artist/24a07df4-368c-4b35-a468-ea972faf97cb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
  text: {"copyright_id":"0xf0d1e65a49c4c10138b48a84b105cfae7145b9e5cd95bcd1073d8d3a51cf74d7","name":"Carmen Reppel","registered_at":"2026-06-16T02:19:23Z","symbol":"NIM0906658","token_address":"0x697e0ba359b282ac0c59738c10d3700defa646b3","type":"artist","uuid":"24a07df4-368c-4b35-a468-ea972faf97cb"}