Naum Grubert
type: MusicGroup
genre: classical piano
popularity: 4
followers: 137
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc31471b65c8c5878f941c9339aede10a5390d74d0cb49d9330fbef7d14fd934
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de0e6455-7e8b-459a-905c-865720206afb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de0e6455-7e8b-459a-905c-865720206afb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de0e6455-7e8b-459a-905c-865720206afb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc31471b65c8c5878f941c9339aede10a5390d74d0cb49d9330fbef7d14fd934","name":"Naum Grubert","registered_at":"2026-06-21T05:40:07Z","symbol":"NIM1836336","token_address":"0x2d315cf3e59ece1fda1893ae20159eaf5c645360","type":"artist","uuid":"de0e6455-7e8b-459a-905c-865720206afb"}
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 0xfc31471b65c8c5878f941c9339aede10a5390d74d0cb49d9330fbef7d14fd934. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de0e6455-7e8b-459a-905c-865720206afb.json and https://artists.proofprofile.net/proofs/artist/de0e6455-7e8b-459a-905c-865720206afb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0xfc31471b65c8c5878f941c9339aede10a5390d74d0cb49d9330fbef7d14fd934","name":"Naum Grubert","registered_at":"2026-06-21T05:40:07Z","symbol":"NIM1836336","token_address":"0x2d315cf3e59ece1fda1893ae20159eaf5c645360","type":"artist","uuid":"de0e6455-7e8b-459a-905c-865720206afb"}
album: Mussorgsky and Rachmaninoff
  type: MusicAlbum
  date published: 2024-11-01