Zayko
type: MusicGroup
description: Zayko is a surname. Notable people with the surname include: Dmytro Zayko (born 1985), Ukrainian footballer Leonid Zayko (born 1948), Russian volleyball player (1940–2014), Russian journalist Categ
popularity: 5
followers: 81
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fdee3bb0ce0a868470b05f6290e36b93a635aa918d816f065df6ca10c3ed216
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954615
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954615
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c58fa47d-505c-4fb7-aa75-74a8c6f0e7de.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c58fa47d-505c-4fb7-aa75-74a8c6f0e7de.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c58fa47d-505c-4fb7-aa75-74a8c6f0e7de
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T22:44:50Z
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fdee3bb0ce0a868470b05f6290e36b93a635aa918d816f065df6ca10c3ed216. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c58fa47d-505c-4fb7-aa75-74a8c6f0e7de.json and https://artists.proofprofile.net/proofs/artist/c58fa47d-505c-4fb7-aa75-74a8c6f0e7de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T22:44:50Z
album: Kalibre
  type: MusicAlbum
  date published: 2023-12-22
album: Bâtiment
  type: MusicAlbum
  date published: 2024-04-05
album: Autopilote
  type: MusicAlbum
  date published: 2024-06-07
album: Code Noir
  type: MusicAlbum
  date published: 2024-10-18