J.COLUMBUS
type: MusicGroup
genre: j-rap
popularity: 2
followers: 495
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb1c3e32899d70d6d98a5129de817b99f7f35827979216462dd789be3b839c6a9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954555
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954555
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/acbabe88-02a0-4240-bc0a-72b2897abd01.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/acbabe88-02a0-4240-bc0a-72b2897abd01.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/acbabe88-02a0-4240-bc0a-72b2897abd01
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T12:10:20Z
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 0xb1c3e32899d70d6d98a5129de817b99f7f35827979216462dd789be3b839c6a9. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acbabe88-02a0-4240-bc0a-72b2897abd01.json and https://artists.proofprofile.net/proofs/artist/acbabe88-02a0-4240-bc0a-72b2897abd01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
album: NORTH TOKYO SOUL TAPE
  type: MusicAlbum
  date published: 2017-12-30
album: NORTH TOKYO SOUL TAPE
  type: MusicAlbum
  date published: 2018-10-26
album: WAVES, SANDS, & THE METROPOLIS
  type: MusicAlbum
  date published: 2019-08-07
album: NEW ME / GOOD LIFE
  type: MusicAlbum
  date published: 2020-04-15
album: GAMES
  type: MusicAlbum
  date published: 2020-05-30
album: RUINS
  type: MusicAlbum
  date published: 2021-04-29
album: AL
  type: MusicAlbum
  date published: 2022-09-05
album: WASTE OF TIME CHOPPED & SCREWED (feat. RENA & ILL-TEE)
  type: MusicAlbum
  date published: 2022-10-15
album: AMBIENT
  type: MusicAlbum
  date published: 2022-12-26
album: CITY OF GLASS
  type: MusicAlbum
  date published: 2022-12-26
album: AMBIENT
  type: MusicAlbum
  date published: 2022-12-26
album: WASTE OF TIME (feat. RENA, ILL-TEE & DEEQUITE)
  type: MusicAlbum
  date published: 2023-08-01
album: On The Groove In The City
  type: MusicAlbum
  date published: 2023-09-22
album: On The Groove In The City
  type: MusicAlbum
  date published: 2023-09-22
album: BEST COAST (feat. ERA) [ILLJUNK REMIX]
  type: MusicAlbum
  date published: 2024-03-14
album: BEST COAST (feat. ERA) [ILLJUNK REMIX]
  type: MusicAlbum
  date published: 2024-03-14
album: FREE (feat. RENA)
  type: MusicAlbum
  date published: 2024-11-30
album: FREE (feat. RENA)
  type: MusicAlbum
  date published: 2024-11-30
album: INGLORIOUS
  type: MusicAlbum
  date published: 2025-10-31