Kobza
type: MusicGroup
description: The kobza (), also called bandura (), is a Ukrainian folk music instrumentS. Lastovich-Chulivsky "Kobza-Bandura", 1989 of the lute family (Hornbostel–Sachs classification number 321.321-5+6), a relati
popularity: 4
followers: 110
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd023b20a7ab2f36bed877f690dee086ce21ce483d872a3b893be3d05337f5515
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953997
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953997
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2350c3c7-a1cf-4f9a-9048-950bac70bb93.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2350c3c7-a1cf-4f9a-9048-950bac70bb93.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2350c3c7-a1cf-4f9a-9048-950bac70bb93
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T20:07:57Z
additional property: OTSCanonicalRecord
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 0xd023b20a7ab2f36bed877f690dee086ce21ce483d872a3b893be3d05337f5515. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2350c3c7-a1cf-4f9a-9048-950bac70bb93.json and https://artists.proofprofile.net/proofs/artist/2350c3c7-a1cf-4f9a-9048-950bac70bb93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
album: Bunny (Remastered 2024)
  type: MusicAlbum
  date published: 2024-08-19
album: Bunny (Remastered 2024)
  type: MusicAlbum
  date published: 2024-08-19