ikII
type: MusicGroup
genre: japanese indie
popularity: 2
followers: 372
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf4fe310b6b8bd6d471d4cb9891466d1f6ddb9b9ff2964bb62ea066b060345ccf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954055
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954055
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/444c3039-e259-4ff8-8ec1-5ae4010ebe44.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/444c3039-e259-4ff8-8ec1-5ae4010ebe44.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/444c3039-e259-4ff8-8ec1-5ae4010ebe44
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T05:51:24Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4fe310b6b8bd6d471d4cb9891466d1f6ddb9b9ff2964bb62ea066b060345ccf. Chain 2 (Bitcoin): anchored in block 954055 (2026-06-17T05:51:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/444c3039-e259-4ff8-8ec1-5ae4010ebe44.json and https://artists.proofprofile.net/proofs/artist/444c3039-e259-4ff8-8ec1-5ae4010ebe44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T05:51:24Z
album: かんちがいか_A
  type: MusicAlbum
  date published: 2021-07-21
album: kanchigaika_A
  type: MusicAlbum
  date published: 2021-07-21
album: かんちがいか_B
  type: MusicAlbum
  date published: 2021-08-18
album: kanchigaika_B
  type: MusicAlbum
  date published: 2021-08-18
album: mataaimasho_A
  type: MusicAlbum
  date published: 2021-09-08
album: またあいましょう_B
  type: MusicAlbum
  date published: 2021-10-06
album: mataaimasho_B
  type: MusicAlbum
  date published: 2021-10-06
album: PlayBall_A
  type: MusicAlbum
  date published: 2021-11-24
album: PlayBall_B
  type: MusicAlbum
  date published: 2021-12-22
album: PlayBall_B
  type: MusicAlbum
  date published: 2021-12-22
album: Moo_A
  type: MusicAlbum
  date published: 2022-03-16
album: Moo_A
  type: MusicAlbum
  date published: 2022-03-16
album: Awa awa...B
  type: MusicAlbum
  date published: 2022-04-06
album: Awa awa...A
  type: MusicAlbum
  date published: 2022-04-06
album: Awa awa...A
  type: MusicAlbum
  date published: 2022-04-06