Marq
type: MusicGroup
genre: j-rap
description: Marq or MARQ may refer to: People Given name Marq Cerqua (born 1977), American former National Football League player Marq Mellor (born 1968), American field hockey player Marq Porciuncula (born 1
popularity: 2
followers: 20
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9eae522665d1ccf06a3730577aa2636c239b0c66a54efc62e9778c9f12e57c72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9e3a7c9-191c-4074-a295-60f144a13b08.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c9e3a7c9-191c-4074-a295-60f144a13b08.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c9e3a7c9-191c-4074-a295-60f144a13b08
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
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 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 0x9eae522665d1ccf06a3730577aa2636c239b0c66a54efc62e9778c9f12e57c72. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9e3a7c9-191c-4074-a295-60f144a13b08.json and https://artists.proofprofile.net/proofs/artist/c9e3a7c9-191c-4074-a295-60f144a13b08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
album: Zone
  type: MusicAlbum
  date published: 2019-03-01
album: KINMOKUSEI
  type: MusicAlbum
  date published: 2022-10-04
album: KINMOKUSEI
  type: MusicAlbum
  date published: 2022-10-04
album: KINMOKUSEI (feat. Code6 & SONOYA)
  type: MusicAlbum
  date published: 2022-10-05
album: KINMOKUSEI (feat. Code6 & SONOYA)
  type: MusicAlbum
  date published: 2022-10-05
album: Secret Lady
  type: MusicAlbum
  date published: 2022-10-22
album: kokoro (feat. GAYA-K)
  type: MusicAlbum
  date published: 2023-10-19
album: Wa no kuni (feat. GRANT)
  type: MusicAlbum
  date published: 2024-08-06
album: Tojo (feat. Hiro on the Base)
  type: MusicAlbum
  date published: 2024-08-10
album: 登上 (feat. Hiro on the Base)
  type: MusicAlbum
  date published: 2024-08-10
album: BORDER
  type: MusicAlbum
  date published: 2024-08-13