Nyan Cat
type: MusicGroup
description: thumb|right|Nyan Cat Nyan Cat is a YouTube video uploaded in April 2011, which became an Internet meme. The video merged a Japanese pop song with an animated cartoon cat with a Pop-Tart for a torso fl
popularity: 26
followers: 18705
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb33187454de74cd742527fb3a6c7ec0684338c23dc6432cc466bd38dd9baf1ed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de9fad07-61f7-4f35-97a5-5a21738dd228.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/de9fad07-61f7-4f35-97a5-5a21738dd228.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/de9fad07-61f7-4f35-97a5-5a21738dd228
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb33187454de74cd742527fb3a6c7ec0684338c23dc6432cc466bd38dd9baf1ed","name":"Nyan Cat","registered_at":"2026-06-12T11:41:09Z","symbol":"NIM0286955","token_address":"0x1a16aec1317c77d7df5c16a6838c7d22db8a32c9","type":"artist","uuid":"de9fad07-61f7-4f35-97a5-5a21738dd228"}
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 0xb33187454de74cd742527fb3a6c7ec0684338c23dc6432cc466bd38dd9baf1ed. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de9fad07-61f7-4f35-97a5-5a21738dd228.json and https://artists.proofprofile.net/proofs/artist/de9fad07-61f7-4f35-97a5-5a21738dd228.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xb33187454de74cd742527fb3a6c7ec0684338c23dc6432cc466bd38dd9baf1ed","name":"Nyan Cat","registered_at":"2026-06-12T11:41:09Z","symbol":"NIM0286955","token_address":"0x1a16aec1317c77d7df5c16a6838c7d22db8a32c9","type":"artist","uuid":"de9fad07-61f7-4f35-97a5-5a21738dd228"}
album: Nyan Cat
  type: MusicAlbum
  date published: 2011-06-24
album: Nyan Cat! - Single
  type: MusicAlbum
  date published: 2011-06-28
album: Nyan Cat - Single
  type: MusicAlbum
  date published: 2012-04-24
album: Nyan Cat Theme
  type: MusicAlbum
  date published: 2014-11-11
album: Nyan Cat
  type: MusicAlbum
  date published: 2017-10-27