hiiro
type: MusicGroup
genre: lo-fi
popularity: 11
followers: 291
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x050792932dd1ff1e321b0b5832e762fa40ace56f3e38fd5ffd5e164c1cad8306
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953592
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953592
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06be6385-219e-497e-aa3d-0fa7d7be7756.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/06be6385-219e-497e-aa3d-0fa7d7be7756.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/06be6385-219e-497e-aa3d-0fa7d7be7756
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T05:36:59Z
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 0x050792932dd1ff1e321b0b5832e762fa40ace56f3e38fd5ffd5e164c1cad8306. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06be6385-219e-497e-aa3d-0fa7d7be7756.json and https://artists.proofprofile.net/proofs/artist/06be6385-219e-497e-aa3d-0fa7d7be7756.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T05:36:59Z
album: Dead Flower
  type: MusicAlbum
  date published: 2021-02-11
album: Hometown
  type: MusicAlbum
  date published: 2021-02-20
album: siceraria
  type: MusicAlbum
  date published: 2021-04-20
album: Ukine
  type: MusicAlbum
  date published: 2021-05-08
album: diary
  type: MusicAlbum
  date published: 2021-05-08
album: a flurry of cherry blossoms
  type: MusicAlbum
  date published: 2021-05-15
album: journey
  type: MusicAlbum
  date published: 2021-05-29
album: Night cityscape
  type: MusicAlbum
  date published: 2021-08-28
album: I know I'm wrong
  type: MusicAlbum
  date published: 2021-08-28
album: I know I’m wrong
  type: MusicAlbum
  date published: 2021-08-28
album: hana no ame / IMG
  type: MusicAlbum
  date published: 2022-01-29
album: Lullaby (beats to relax Ver.)
  type: MusicAlbum
  date published: 2022-03-28
album: Lullaby (beats to relax Ver.)
  type: MusicAlbum
  date published: 2022-03-28
album: sayonara imaginary
  type: MusicAlbum
  date published: 2022-04-09
album: さよならイマジナリー
  type: MusicAlbum
  date published: 2022-04-09
album: flower crown
  type: MusicAlbum
  date published: 2023-01-24
album: cuddle
  type: MusicAlbum
  date published: 2023-05-10
album: natsukage
  type: MusicAlbum
  date published: 2023-09-01
album: PETRICHOR
  type: MusicAlbum
  date published: 2024-01-22
track: Yunagi

Yunagi
type: MusicRecording
duration: PT3M10S
duration ms: 190400
explicit: false
by artist: greenface
by artist: hiiro
in album: Yunagi
  type: MusicAlbum
  date published: 2021-03-11
genre: lo-fi
genre: lo-fi-beats
genre: lo-fi-hip-hop
isrc code: TCJPN2196980
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T19:17:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa23cdba6736f8b812d2fd8a1901f8e3a768b1d98a423ea5bf3143a2143631019
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPN2196980
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23cdba6736f8b812d2fd8a1901f8e3a768b1d98a423ea5bf3143a2143631019. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPN2196980.
  date published: 2026-06-13T17:25:41Z
audio: Yunagi
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.001
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.709
  additional property: Energy
    type: PropertyValue
    value: 0.491
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.826
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.942
  additional property: Liveness
    type: PropertyValue
    value: 0.115
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.223
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.76
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major