VII DAYS REASON
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genre: melodic hardcore
popularity: 9
followers: 645
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232ee374ae3171ad1d12bfa3b88214c017994ade97cf8fc9f0a2c74032204bd6. 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/e5b49df7-05ea-4d1d-949b-6605428aab4a.json and https://artists.proofprofile.net/proofs/artist/e5b49df7-05ea-4d1d-949b-6605428aab4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
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album: stamp
  type: MusicAlbum
  date published: 2018-02-10
album: stamp
  type: MusicAlbum
  date published: 2018-02-10
album: stamp
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  date published: 2018-04-19
album: indigo
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  date published: 2019-10-01
album: indigo
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  date published: 2019-11-23
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    by artist: VII DAYS REASON
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      type: MusicAlbum
      date published: 2019-11-23
    genre: melodic hardcore
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    additional property: OTSTimestamp
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    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
    subject of: OpenTimestamps Proof of Existence
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd894329177971f7279ac7b2d7166079fb4d867ee310720a3fc98a10f94a7a712. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPZ2466066.
      date published: 2026-07-22T08:41:42Z
    audio: Beacon
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album: indigo
  type: MusicAlbum
  date published: 2019-11-23
album: 夏日
  type: MusicAlbum
  date published: 2020-11-21
album: KOUBOU
  type: MusicAlbum
  date published: 2020-11-21
album: 光芒
  type: MusicAlbum
  date published: 2020-11-21
album: kajitsu
  type: MusicAlbum
  date published: 2020-11-21
album: JUGGERNAUT-NO-SHINRI
  type: MusicAlbum
  date published: 2021-03-14
album: ジャガーノートの心理
  type: MusicAlbum
  date published: 2021-03-14
album: SUMMER OF LOVE
  type: MusicAlbum
  date published: 2022-10-14
album: サマー・オブ・ラブ
  type: MusicAlbum
  date published: 2022-10-14
album: Youth
  type: MusicAlbum
  date published: 2022-10-19
album: INOTI MIZIKASHI KOISEYO OTOME (feat. KD)
  type: MusicAlbum
  date published: 2022-11-11
album: 命短シ恋セヨ乙女 (feat. KD)
  type: MusicAlbum
  date published: 2022-11-11
album: Anemone
  type: MusicAlbum
  date published: 2022-11-21
album: Anemone
  type: MusicAlbum
  date published: 2022-11-21
album: Spiky
  type: MusicAlbum
  date published: 2023-10-09
album: Spiky
  type: MusicAlbum
  date published: 2023-10-09
  track: 命短シ恋セヨ乙女 (feat. KD)
    type: MusicRecording
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    by artist: VII DAYS REASON
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      type: MusicAlbum
      date published: 2023-10-09
    genre: melodic hardcore
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    additional property: OTSVerificationAPI
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    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: 命短シ恋セヨ乙女 (feat. KD)
album: 羅針盤
album: Bite Me
album: Champions
album: 消しカス
album: STEEL BOYS

CopyrightRegisteredAt
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CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xe90ed3c7a527fc9ee2c673be8136e47a39107e201125c4045ba8993441644601

OTSHash
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OTSBitcoinBlock
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value: 956772

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956772

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPZ2466190

OTSTimestamp
type: PropertyValue
value: 2026-07-05T10:01:46Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90ed3c7a527fc9ee2c673be8136e47a39107e201125c4045ba8993441644601. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPZ2466190.
date published: 2026-07-05T10:01:46Z

命短シ恋セヨ乙女 (feat. KD)
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additional property: Tempo (BPM)
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additional property: Time Signature
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additional property: Danceability
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additional property: Speechiness
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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  type: PropertyValue
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additional property: Key Name
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  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

羅針盤
type: MusicAlbum
date published: 2025-04-19
track: 羅針盤
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    date published: 2025-04-19
  genre: melodic hardcore
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  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a095e3038ce63b7fce637cd7a0f5c1d3da02a922df7620272e93488de15e981. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPZ922502256.
    date published: 2026-07-04T10:04:33Z
  audio: 羅針盤
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    additional property: Tempo (BPM)
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      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
      value: 0.33
    additional property: Valence (Positivity)
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      value: 0.7
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      type: PropertyValue
      value: -3.305
    additional property: Key Name
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Bite Me
type: MusicAlbum
date published: 2025-06-30

Champions
type: MusicAlbum
date published: 2025-07-30

消しカス
type: MusicAlbum
date published: 2025-09-06

STEEL BOYS
type: MusicAlbum
date published: 2025-10-08