Doris Soffel
type: MusicGroup
genre: opera
genre: requiem
description: thumb|Doris SoffelDoris Soffel (born 12 May 1948, Hechingen, Germany) is a German mezzo-soprano. Doris Soffel first played the violin, then switched to singing at the Hochschule für Musik und Theater
popularity: 17
followers: 207
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c9a14c4939980b2a31aaacf1a757a6938a8bed0d037caca25ee82f8bb063176
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953630
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953630
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/308b310c-3fbd-4f1c-858a-6878e47732fe.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/308b310c-3fbd-4f1c-858a-6878e47732fe.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/308b310c-3fbd-4f1c-858a-6878e47732fe
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:06:27Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c9a14c4939980b2a31aaacf1a757a6938a8bed0d037caca25ee82f8bb063176","name":"Doris Soffel","registered_at":"2026-06-14T09:34:54Z","symbol":"NIM0411608","token_address":"0xba7f5a58b1b7366cf3960009149da4df517bd63c","type":"artist","uuid":"308b310c-3fbd-4f1c-858a-6878e47732fe"}
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 0x0c9a14c4939980b2a31aaacf1a757a6938a8bed0d037caca25ee82f8bb063176. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/308b310c-3fbd-4f1c-858a-6878e47732fe.json and https://artists.proofprofile.net/proofs/artist/308b310c-3fbd-4f1c-858a-6878e47732fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:06:27Z
  text: {"copyright_id":"0x0c9a14c4939980b2a31aaacf1a757a6938a8bed0d037caca25ee82f8bb063176","name":"Doris Soffel","registered_at":"2026-06-14T09:34:54Z","symbol":"NIM0411608","token_address":"0xba7f5a58b1b7366cf3960009149da4df517bd63c","type":"artist","uuid":"308b310c-3fbd-4f1c-858a-6878e47732fe"}
album: Virtuoso Arias
  type: MusicAlbum
  date published: 1992-01-01
album: Virtuoso Arias
  type: MusicAlbum
  date published: 1992-01-01
album: Doris Soffel Sings Bel Canto
  type: MusicAlbum
  date published: 1998-01-01
album: Doris Soffel Sings Bel Canto
  type: MusicAlbum
  date published: 1998-01-01
album: Doris Soffel Sings Lieder
  type: MusicAlbum
  date published: 1998-01-01
album: Doris Soffel Sings Lieder
  type: MusicAlbum
  date published: 1998-01-01