daisansei
type: MusicGroup
genre: japanese indie
popularity: 8
followers: 2383
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x34bc8ff01718a46c5df7d6da0533810de97248f9ff282316dc73e5dca4fe7307
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 953954
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953954
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/25914e0c-bb05-45a5-8fcd-7c2117396ec4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/25914e0c-bb05-45a5-8fcd-7c2117396ec4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/25914e0c-bb05-45a5-8fcd-7c2117396ec4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T14:18:37Z
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 0x34bc8ff01718a46c5df7d6da0533810de97248f9ff282316dc73e5dca4fe7307. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25914e0c-bb05-45a5-8fcd-7c2117396ec4.json and https://artists.proofprofile.net/proofs/artist/25914e0c-bb05-45a5-8fcd-7c2117396ec4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T14:18:37Z
album: 箱根
  type: MusicAlbum
  date published: 2019-07-12
album: Hakone
  type: MusicAlbum
  date published: 2019-07-12
album: Day and river
  type: MusicAlbum
  date published: 2019-09-23
album: ショートホープ
  type: MusicAlbum
  date published: 2019-12-01
album: SHORT HOPE
  type: MusicAlbum
  date published: 2019-12-01
album: From The North
  type: MusicAlbum
  date published: 2020-04-29
album: 北のほうから
  type: MusicAlbum
  date published: 2020-04-29
album: 体育館
  type: MusicAlbum
  date published: 2020-05-27
album: Gymnasium
  type: MusicAlbum
  date published: 2020-05-27
album: しおさい
  type: MusicAlbum
  date published: 2020-06-24
album: ざらめ、綿飴
  type: MusicAlbum
  date published: 2020-07-29
album: ドラマのデー
  type: MusicAlbum
  date published: 2020-11-11
  track: ショッポ
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187000
    explicit: false
    by artist: daisansei
    in album: ドラマのデー
      type: MusicAlbum
      date published: 2020-11-11
    genre: japanese indie
    isrc code: TCJPJ1999325
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
      value: 2026-07-04T15:23:10+00:00
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      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9bc9ab05f11ae153f965342b1da02d5db9ca85fc85a05b6d45f857f3821d3cbd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPJ1999325
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0x9bc9ab05f11ae153f965342b1da02d5db9ca85fc85a05b6d45f857f3821d3cbd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPJ1999325.
      date published: 2026-07-05T01:43:49Z
    audio: ショッポ
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.912
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.609
      additional property: Energy
        type: PropertyValue
        value: 0.615
      additional property: Speechiness
        type: PropertyValue
        value: 0.025
      additional property: Acousticness
        type: PropertyValue
        value: 0.374
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.093
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.434
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.265
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 急須
  type: MusicAlbum
  date published: 2021-02-17
album: automa
  type: MusicAlbum
  date published: 2021-03-17
album: ぬかるみ山
  type: MusicAlbum
  date published: 2021-04-21
album: えび
  type: MusicAlbum
  date published: 2021-05-26
album: ルートユー
  type: MusicAlbum
  date published: 2021-12-08
album: Yellow
  type: MusicAlbum
  date published: 2022-02-25
album: root you
  type: MusicAlbum
  date published: 2022-05-25
album: 花々
  type: MusicAlbum
  date published: 2022-10-14
album: Reiko
  type: MusicAlbum
  date published: 2023-06-14
album: レイコ
  type: MusicAlbum
  date published: 2023-06-14
album: Hotaru No Sen
  type: MusicAlbum
  date published: 2023-08-16
album: 彼は紫陽花の行方
  type: MusicAlbum
  date published: 2023-11-08
  track: ビードロ - vidro mix
    type: MusicRecording
    duration: PT2M8S
    duration ms: 128436
    explicit: false
    by artist: daisansei
    in album: 彼は紫陽花の行方
      type: MusicAlbum
      date published: 2023-11-08
    genre: japanese indie
    isrc code: TCJPX2380994
    additional property: CopyrightID
    additional property: CopyrightStatus
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: ビードロ - vidro mix
album: He is the missing hydrangea
album: ブーケトス（ウェディング・ソング）
album: Bouquet Toss (Wedding Song)
album: before you leave
album: 春団欒
album: Spring Gathering

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-20T02:07:56+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x8f12bb41bc14355067b25f9034042c4d5fe6ac24ab090f2d5467c875e4dea96d

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958808

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958808

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2380994

OTSTimestamp
type: PropertyValue
value: 2026-07-20T05:08:11Z

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 0x8f12bb41bc14355067b25f9034042c4d5fe6ac24ab090f2d5467c875e4dea96d. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:08:11Z), 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/TCJPX2380994.
date published: 2026-07-20T05:08:11Z

ビードロ - vidro mix
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 105.956
additional property: Musical Key
  type: PropertyValue
  value: 11
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.765
additional property: Energy
  type: PropertyValue
  value: 0.502
additional property: Speechiness
  type: PropertyValue
  value: 0.027
additional property: Acousticness
  type: PropertyValue
  value: 0.05
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.163
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.684
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.64
additional property: Key Name
  type: PropertyValue
  value: B
additional property: Mode Name
  type: PropertyValue
  value: Minor

He is the missing hydrangea
type: MusicAlbum
date published: 2023-11-08

ブーケトス（ウェディング・ソング）
type: MusicAlbum
date published: 2024-06-07

Bouquet Toss (Wedding Song)
type: MusicAlbum
date published: 2024-06-07

before you leave
type: MusicAlbum
date published: 2024-11-15

before you leave
type: MusicAlbum
date published: 2024-11-15

春団欒
type: MusicAlbum
date published: 2025-06-11

Spring Gathering
type: MusicAlbum
date published: 2025-06-11

春団欒
type: MusicAlbum
date published: 2025-07-09

Spring Gathering
type: MusicAlbum
date published: 2025-07-09