Mad Cobra
type: MusicGroup
genre: dancehall
genre: ragga
description: Ewart Everton Brown (born 31 March 1968), better known by his stage name Mad Cobra or simply Cobra, is a Jamaican dancehall musician.Huey, Steve "[ Mad Cobra Biography]", AllMusic, retrieved 2010-01-3
popularity: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xda87732898bf6a1ceee9d0db67383a848088573687668cf20236b854ab4debd4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954062
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954062
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/46fcb934-478e-4285-802a-9f91a0073238.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/46fcb934-478e-4285-802a-9f91a0073238.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/46fcb934-478e-4285-802a-9f91a0073238
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T07:39:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xda87732898bf6a1ceee9d0db67383a848088573687668cf20236b854ab4debd4","name":"Mad Cobra","registered_at":"2026-06-16T14:28:05Z","symbol":"NIM1080599","token_address":"0x5ea38a159c555cff6b9228ef7663d6f1a0f6dbfb","type":"artist","uuid":"46fcb934-478e-4285-802a-9f91a0073238"}
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 0xda87732898bf6a1ceee9d0db67383a848088573687668cf20236b854ab4debd4. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46fcb934-478e-4285-802a-9f91a0073238.json and https://artists.proofprofile.net/proofs/artist/46fcb934-478e-4285-802a-9f91a0073238.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T07:39:10Z
  text: {"copyright_id":"0xda87732898bf6a1ceee9d0db67383a848088573687668cf20236b854ab4debd4","name":"Mad Cobra","registered_at":"2026-06-16T14:28:05Z","symbol":"NIM1080599","token_address":"0x5ea38a159c555cff6b9228ef7663d6f1a0f6dbfb","type":"artist","uuid":"46fcb934-478e-4285-802a-9f91a0073238"}