Robert Kulek
type: MusicGroup
genre: chamber music
description: Robert Kulek is an American classical pianist. He is of Latvian ancestry and currently resides in the Netherlands. He has recorded for multiple labels including EMI and Pentatone, and his recording of
popularity: 14
followers: 142
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xb44d5e7076a7bc681040da043ed8f55e075e77de7a9eff98aedd54ce5eafba1c
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953758
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953758
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5891538-ac67-427a-a0a5-715551ccd5f2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b5891538-ac67-427a-a0a5-715551ccd5f2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b5891538-ac67-427a-a0a5-715551ccd5f2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T07:48:25Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0xb44d5e7076a7bc681040da043ed8f55e075e77de7a9eff98aedd54ce5eafba1c. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5891538-ac67-427a-a0a5-715551ccd5f2.json and https://artists.proofprofile.net/proofs/artist/b5891538-ac67-427a-a0a5-715551ccd5f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:04:42Z
  text: {"copyright_id":"0xb44d5e7076a7bc681040da043ed8f55e075e77de7a9eff98aedd54ce5eafba1c","name":"Robert Kulek","registered_at":"2026-06-14T23:36:49Z","symbol":"NIM0612433","token_address":"0x938b665bb20f343b52b03d96ee490dc707f9dcad","type":"artist","uuid":"b5891538-ac67-427a-a0a5-715551ccd5f2"}
album: Sonatas for Violin and Piano
  type: MusicAlbum
  date published: 2015-10-01