Big Brain
type: MusicGroup
genre: k-ballad
description: Big Brain () is a South-Korean R&B ballad group that consist of four-members under the label World Show Market. They have been active since 2010 and officially debuted on October 22, 2015, with the al
popularity: 3
followers: 1510
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ab45a7ad8eddd80de1168f69c5fc09799ce2b04e019d90db90f160868227b29
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/742fa7bd-4729-4da1-8074-9cea8cd126c4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/742fa7bd-4729-4da1-8074-9cea8cd126c4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/742fa7bd-4729-4da1-8074-9cea8cd126c4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0ab45a7ad8eddd80de1168f69c5fc09799ce2b04e019d90db90f160868227b29","name":"Big Brain","registered_at":"2026-06-17T06:11:17Z","symbol":"NIM1305668","token_address":"0x8a9c5dca844d50479cde5bac923841dbc75e6f1a","type":"artist","uuid":"742fa7bd-4729-4da1-8074-9cea8cd126c4"}
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 0x0ab45a7ad8eddd80de1168f69c5fc09799ce2b04e019d90db90f160868227b29. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/742fa7bd-4729-4da1-8074-9cea8cd126c4.json and https://artists.proofprofile.net/proofs/artist/742fa7bd-4729-4da1-8074-9cea8cd126c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0ab45a7ad8eddd80de1168f69c5fc09799ce2b04e019d90db90f160868227b29","name":"Big Brain","registered_at":"2026-06-17T06:11:17Z","symbol":"NIM1305668","token_address":"0x8a9c5dca844d50479cde5bac923841dbc75e6f1a","type":"artist","uuid":"742fa7bd-4729-4da1-8074-9cea8cd126c4"}
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