PLAYZONE
type: MusicGroup
description: Playzone is a Japanese musical production. It used to be presented annually from 1986 to 2015 under the auspices of Johnny & Associates. The lead role was played by Shonentai until the 2008 performanc
popularity: 3
followers: 55
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb931284a8e687d156ad550924c4be3bf491f906365e7812c02e8e960054ef0f6
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/27cb6ff5-da37-4461-9b3b-b84e4db44463.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27cb6ff5-da37-4461-9b3b-b84e4db44463.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27cb6ff5-da37-4461-9b3b-b84e4db44463
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 0xb931284a8e687d156ad550924c4be3bf491f906365e7812c02e8e960054ef0f6. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27cb6ff5-da37-4461-9b3b-b84e4db44463.json and https://artists.proofprofile.net/proofs/artist/27cb6ff5-da37-4461-9b3b-b84e4db44463.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T22:46:20Z
album: TheMILL
  type: MusicAlbum
  date published: 2021-07-02
album: In The Maybach
  type: MusicAlbum
  date published: 2022-06-01
album: No Trinity
  type: MusicAlbum
  date published: 2023-03-20