OK Ikumi
type: MusicGroup
popularity: 5
followers: 1325
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ecb503f5fe4108966f116eb1550dd395f9ef47ceadd1c7f5feba1c57fcc9add
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6502685-3e09-42cc-abec-a1fe4767ea53.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a6502685-3e09-42cc-abec-a1fe4767ea53.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a6502685-3e09-42cc-abec-a1fe4767ea53
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0ecb503f5fe4108966f116eb1550dd395f9ef47ceadd1c7f5feba1c57fcc9add","name":"OK Ikumi","registered_at":"2026-06-20T07:36:42Z","symbol":"NIM1555918","token_address":"0x1e23235b3b374338b55f79b955a240f320799053","type":"artist","uuid":"a6502685-3e09-42cc-abec-a1fe4767ea53"}
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 0x0ecb503f5fe4108966f116eb1550dd395f9ef47ceadd1c7f5feba1c57fcc9add. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6502685-3e09-42cc-abec-a1fe4767ea53.json and https://artists.proofprofile.net/proofs/artist/a6502685-3e09-42cc-abec-a1fe4767ea53.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0x0ecb503f5fe4108966f116eb1550dd395f9ef47ceadd1c7f5feba1c57fcc9add","name":"OK Ikumi","registered_at":"2026-06-20T07:36:42Z","symbol":"NIM1555918","token_address":"0x1e23235b3b374338b55f79b955a240f320799053","type":"artist","uuid":"a6502685-3e09-42cc-abec-a1fe4767ea53"}
album: Spirits
  type: MusicAlbum
  date published: 2007-11-06
album: Mini CD Series
  type: MusicAlbum
  date published: 2010-04-28
album: Mini CD Series
  type: MusicAlbum
  date published: 2010-04-28
album: IV/XI
  type: MusicAlbum
  date published: 2011-06-16
album: Alpine Sequences
  type: MusicAlbum
  date published: 2012-07-30
album: Alpine Sequences
  type: MusicAlbum
  date published: 2012-07-30
album: Weekly Beats 2012
  type: MusicAlbum
  date published: 2012-08-05
album: Numbers Series
  type: MusicAlbum
  date published: 2013-10-21
album: 10 / 13
  type: MusicAlbum
  date published: 2013-10-23
album: Outside
  type: MusicAlbum
  date published: 2014-04-30
album: Outside
  type: MusicAlbum
  date published: 2014-04-30
album: Sea / Land / Sky
  type: MusicAlbum
  date published: 2016-08-02
album: Farmor
  type: MusicAlbum
  date published: 2017-03-16
album: Farmor
  type: MusicAlbum
  date published: 2017-03-16
album: Weekly Beats Series
  type: MusicAlbum
  date published: 2017-11-02
album: Hidden Falls (Tape Version)
  type: MusicAlbum
  date published: 2020-10-09
album: Mountain Shadows
  type: MusicAlbum
  date published: 2024-09-03
album: Mountain Shadows (Bonus Tracks)
  type: MusicAlbum
  date published: 2024-09-03