Sommeil Sommeil
type: MusicGroup
genre: shibuya-kei
popularity: 2
followers: 593
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3ff640dd9d8511e0ea05034e956bf78eda3455bd93a74f099f6144c402af2bae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3ff640dd9d8511e0ea05034e956bf78eda3455bd93a74f099f6144c402af2bae","name":"Sommeil Sommeil","registered_at":"2026-06-21T03:21:43Z","symbol":"NIM1803689","token_address":"0x76b93b591af22b576c8634c7ab9bdf636ab223db","type":"artist","uuid":"d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e"}
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 0x3ff640dd9d8511e0ea05034e956bf78eda3455bd93a74f099f6144c402af2bae. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e.json and https://artists.proofprofile.net/proofs/artist/d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0x3ff640dd9d8511e0ea05034e956bf78eda3455bd93a74f099f6144c402af2bae","name":"Sommeil Sommeil","registered_at":"2026-06-21T03:21:43Z","symbol":"NIM1803689","token_address":"0x76b93b591af22b576c8634c7ab9bdf636ab223db","type":"artist","uuid":"d8002e59-6cfd-42fe-80fb-f3ba83d2fc5e"}
album: 恋は冬の香り/チャイナでパンク
  type: MusicAlbum
  date published: 2018-07-11
album: Love is the scent of winter / Punk in China
  type: MusicAlbum
  date published: 2018-08-19
album: she (will) soon
  type: MusicAlbum
  date published: 2018-12-24
album: 愛の旅/今日はどこにも
  type: MusicAlbum
  date published: 2019-08-12
album: 愛の旅 / 今日はどこにも
  type: MusicAlbum
  date published: 2019-08-12
album: she never.
  type: MusicAlbum
  date published: 2021-01-08
album: 穏やかな祝祭
  type: MusicAlbum
  date published: 2021-03-10
album: wonder day
  type: MusicAlbum
  date published: 2021-11-24
album: wonder day
  type: MusicAlbum
  date published: 2021-11-24
album: Bon voyage!
  type: MusicAlbum
  date published: 2022-05-11
album: とけあいたい
  type: MusicAlbum
  date published: 2022-10-20
album: パステルカラーの町で
  type: MusicAlbum
  date published: 2022-10-20
album: メタモルフォーゼプール
  type: MusicAlbum
  date published: 2023-01-11
album: あの子が泣いてる
  type: MusicAlbum
  date published: 2023-07-07
album: 幼なじみになりそう！
  type: MusicAlbum
  date published: 2024-01-10
album: まだ夏の思い出がひとつもない！
  type: MusicAlbum
  date published: 2024-08-24
album: Re:relation
  type: MusicAlbum
  date published: 2025-09-24