Agata Kielar-Długosz
type: MusicGroup
genre: chamber music
popularity: 5
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4454802d879de6030a8caa84d5a753e742d9a7ec6877815ef788146a6e8a9af8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a331e62c-beb1-4ea4-905b-678ef44c20fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a331e62c-beb1-4ea4-905b-678ef44c20fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a331e62c-beb1-4ea4-905b-678ef44c20fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4454802d879de6030a8caa84d5a753e742d9a7ec6877815ef788146a6e8a9af8","name":"Agata Kielar-Długosz","registered_at":"2026-06-20T06:29:25Z","symbol":"NIM1541085","token_address":"0xf41ce293293b3672b457dba58c788dc87c196f1e","type":"artist","uuid":"a331e62c-beb1-4ea4-905b-678ef44c20fd"}
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 0x4454802d879de6030a8caa84d5a753e742d9a7ec6877815ef788146a6e8a9af8. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a331e62c-beb1-4ea4-905b-678ef44c20fd.json and https://artists.proofprofile.net/proofs/artist/a331e62c-beb1-4ea4-905b-678ef44c20fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x4454802d879de6030a8caa84d5a753e742d9a7ec6877815ef788146a6e8a9af8","name":"Agata Kielar-Długosz","registered_at":"2026-06-20T06:29:25Z","symbol":"NIM1541085","token_address":"0xf41ce293293b3672b457dba58c788dc87c196f1e","type":"artist","uuid":"a331e62c-beb1-4ea4-905b-678ef44c20fd"}
album: Vive la Paris!
  type: MusicAlbum
  date published: 2018-01-31
album: For You, Anne-Lill
  type: MusicAlbum
  date published: 2018-10-19
album: For You, Anne-Lill
  type: MusicAlbum
  date published: 2018-10-19
album: Flute Essentials
  type: MusicAlbum
  date published: 2020-06-05
album: Modern Lullabies
  type: MusicAlbum
  date published: 2022-04-01
album: Modern Lullabies
  type: MusicAlbum
  date published: 2022-04-01
album: FLAUTOFORTE, vol. 1
  type: MusicAlbum
  date published: 2023-11-15