Double Dragon
type: MusicGroup
genre: synthwave
description: is a beat 'em up video game series originally developed and published by Technōs Japan. It began with the release of the arcade game Double Dragon in 1987. The series features twin martial artists, B
popularity: 10
followers: 327
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f824fa39979297a3c712e3293a90d180d186fc126af5430addea66058a3f9c2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954516
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954516
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1d0d835-3a2c-4289-92b1-d15167d09f30.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a1d0d835-3a2c-4289-92b1-d15167d09f30.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a1d0d835-3a2c-4289-92b1-d15167d09f30
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T07:04:44Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1f824fa39979297a3c712e3293a90d180d186fc126af5430addea66058a3f9c2","name":"Double Dragon","registered_at":"2026-06-20T05:41:47Z","symbol":"NIM1532855","token_address":"0x49eff3ce8ec5b85202b504a6b824480cc5b96e0a","type":"artist","uuid":"a1d0d835-3a2c-4289-92b1-d15167d09f30"}
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 0x1f824fa39979297a3c712e3293a90d180d186fc126af5430addea66058a3f9c2. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a1d0d835-3a2c-4289-92b1-d15167d09f30.json and https://artists.proofprofile.net/proofs/artist/a1d0d835-3a2c-4289-92b1-d15167d09f30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T07:04:44Z
  text: {"copyright_id":"0x1f824fa39979297a3c712e3293a90d180d186fc126af5430addea66058a3f9c2","name":"Double Dragon","registered_at":"2026-06-20T05:41:47Z","symbol":"NIM1532855","token_address":"0x49eff3ce8ec5b85202b504a6b824480cc5b96e0a","type":"artist","uuid":"a1d0d835-3a2c-4289-92b1-d15167d09f30"}
album: Double Dragon
  type: MusicAlbum
  date published: 2016-09-30
album: The Descent
  type: MusicAlbum
  date published: 2018-09-28
album: The Descent
  type: MusicAlbum
  date published: 2019-04-23
album: Covid2039
  type: MusicAlbum
  date published: 2022-03-31
album: Starlight Requiem
  type: MusicAlbum
  date published: 2025-10-17