Tomomi Ukumori
type: MusicGroup
popularity: 8
followers: 553
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x80a0623d24d23c1e39f3553e8cdc5f09c1f9cfd6462d2e227ccc38e158256af1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9716a71-07cc-4d73-bff5-4547a87975b4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e9716a71-07cc-4d73-bff5-4547a87975b4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e9716a71-07cc-4d73-bff5-4547a87975b4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x80a0623d24d23c1e39f3553e8cdc5f09c1f9cfd6462d2e227ccc38e158256af1","name":"Tomomi Ukumori","registered_at":"2026-06-21T10:06:27Z","symbol":"NIM1894454","token_address":"0xed23b251f310bb03557ac7fd03992218bfc77faa","type":"artist","uuid":"e9716a71-07cc-4d73-bff5-4547a87975b4"}
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 0x80a0623d24d23c1e39f3553e8cdc5f09c1f9cfd6462d2e227ccc38e158256af1. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9716a71-07cc-4d73-bff5-4547a87975b4.json and https://artists.proofprofile.net/proofs/artist/e9716a71-07cc-4d73-bff5-4547a87975b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0x80a0623d24d23c1e39f3553e8cdc5f09c1f9cfd6462d2e227ccc38e158256af1","name":"Tomomi Ukumori","registered_at":"2026-06-21T10:06:27Z","symbol":"NIM1894454","token_address":"0xed23b251f310bb03557ac7fd03992218bfc77faa","type":"artist","uuid":"e9716a71-07cc-4d73-bff5-4547a87975b4"}
album: Indigo
  type: MusicAlbum
  date published: 2007-04-05
album: Indigo
  type: MusicAlbum
  date published: 2008-01-25
album: Sing When It's Dangerous
  type: MusicAlbum
  date published: 2011-10-18
album: Timeless
  type: MusicAlbum
  date published: 2012-07-31
album: Timeless
  type: MusicAlbum
  date published: 2012-07-31
album: Timeless
  type: MusicAlbum
  date published: 2012-07-31
album: Timeless
  type: MusicAlbum
  date published: 2013-01-07
album: The Colors
  type: MusicAlbum
  date published: 2019-06-07
album: The First Contact
  type: MusicAlbum
  date published: 2020-01-10
album: The Colors (Hideo Kobayashi Remixes)
  type: MusicAlbum
  date published: 2020-02-14