Sissel Kyrkjebø
type: MusicGroup
description: Sissel Kyrkjebø (; born 24 June 1969), also known abroad as Sissel, is a Norwegian soprano. She is considered one of the world's top crossover sopranos. Her musical style ranges from pop recordings an
popularity: 9
followers: 525
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x231a7286ba945c540070f6cadf1fd3cfd8a7ec01ab2ea5268b8cfde7abfe6946
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954035
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954035
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3dc1c864-1d21-4b97-91bd-5d963122b37b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3dc1c864-1d21-4b97-91bd-5d963122b37b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3dc1c864-1d21-4b97-91bd-5d963122b37b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T02:39:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x231a7286ba945c540070f6cadf1fd3cfd8a7ec01ab2ea5268b8cfde7abfe6946","name":"Sissel Kyrkjebø","registered_at":"2026-06-16T11:05:03Z","symbol":"NIM1032170","token_address":"0x6bcc4c150430362da7bf30cb88ac9b8582e9d87c","type":"artist","uuid":"3dc1c864-1d21-4b97-91bd-5d963122b37b"}
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 0x231a7286ba945c540070f6cadf1fd3cfd8a7ec01ab2ea5268b8cfde7abfe6946. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc1c864-1d21-4b97-91bd-5d963122b37b.json and https://artists.proofprofile.net/proofs/artist/3dc1c864-1d21-4b97-91bd-5d963122b37b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T02:39:28Z
  text: {"copyright_id":"0x231a7286ba945c540070f6cadf1fd3cfd8a7ec01ab2ea5268b8cfde7abfe6946","name":"Sissel Kyrkjebø","registered_at":"2026-06-16T11:05:03Z","symbol":"NIM1032170","token_address":"0x6bcc4c150430362da7bf30cb88ac9b8582e9d87c","type":"artist","uuid":"3dc1c864-1d21-4b97-91bd-5d963122b37b"}
album: Önska dig ett Gott Nytt År
  type: MusicAlbum
  date published: 2019-01-01