Sebastian Feiersinger
type: MusicGroup
genre: opera
description: Sebastian Feiersinger (5 May 1913, in Kirchbichl – 2 September 1984, in Nuremberg) was an Austrian operatic tenor, particularly associated with the German repertory. He studied at the Vienna Music Ac
popularity: 3
followers: 4
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x17de9455479a1e18315428269f9190a9cf6063a3aaa319a4b7e7d94d27288026
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dda65aac-e0de-4c35-a145-4c03f0125d67.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dda65aac-e0de-4c35-a145-4c03f0125d67.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dda65aac-e0de-4c35-a145-4c03f0125d67
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x17de9455479a1e18315428269f9190a9cf6063a3aaa319a4b7e7d94d27288026","name":"Sebastian Feiersinger","registered_at":"2026-06-21T05:26:18Z","symbol":"NIM1833448","token_address":"0x4362136637c7a3cb687bd2095d691162a2b57417","type":"artist","uuid":"dda65aac-e0de-4c35-a145-4c03f0125d67"}
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 0x17de9455479a1e18315428269f9190a9cf6063a3aaa319a4b7e7d94d27288026. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dda65aac-e0de-4c35-a145-4c03f0125d67.json and https://artists.proofprofile.net/proofs/artist/dda65aac-e0de-4c35-a145-4c03f0125d67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x17de9455479a1e18315428269f9190a9cf6063a3aaa319a4b7e7d94d27288026","name":"Sebastian Feiersinger","registered_at":"2026-06-21T05:26:18Z","symbol":"NIM1833448","token_address":"0x4362136637c7a3cb687bd2095d691162a2b57417","type":"artist","uuid":"dda65aac-e0de-4c35-a145-4c03f0125d67"}