斉藤 尋己
type: MusicGroup
popularity: 11
followers: 232
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6c68eea97a62e2be78067c13805ad83ce0450ec90327ca761daa27924bbeb5cf
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/894bf4e5-5f26-4a28-b257-c22d672d3762.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/894bf4e5-5f26-4a28-b257-c22d672d3762.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/894bf4e5-5f26-4a28-b257-c22d672d3762
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:05:33Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 0x6c68eea97a62e2be78067c13805ad83ce0450ec90327ca761daa27924bbeb5cf. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/894bf4e5-5f26-4a28-b257-c22d672d3762.json and https://artists.proofprofile.net/proofs/artist/894bf4e5-5f26-4a28-b257-c22d672d3762.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:05:33Z
  text: {"copyright_id":"0x6c68eea97a62e2be78067c13805ad83ce0450ec90327ca761daa27924bbeb5cf","name":"斉藤 尋己","registered_at":"2026-06-14T18:51:05Z","symbol":"NIM0544286","token_address":"0x91624a6474033f3513e277df4ea91b02ae79152d","type":"artist","uuid":"894bf4e5-5f26-4a28-b257-c22d672d3762"}
album: Improvisations (Instrumental)
  type: MusicAlbum
  date published: 2010
album: into my soundscape
  type: MusicAlbum
  date published: 2018-09-13
album: into my soundscape
  type: MusicAlbum
  date published: 2018-09-13
album: Coffee and Guitar
  type: MusicAlbum
  date published: 2020-07-10
album: Coffee and Guitar
  type: MusicAlbum
  date published: 2020-07-10
album: Improvisations II - diary Vol.1
  type: MusicAlbum
  date published: 2022-01-23
album: Improvisations Ⅱ - diary Vol.1
  type: MusicAlbum
  date published: 2022-01-23
album: Improvisations Ⅱ - diary Vol.2
  type: MusicAlbum
  date published: 2022-02-13
album: Improvisations II - diary Vol.2
  type: MusicAlbum
  date published: 2022-02-13
album: Nostalgia
  type: MusicAlbum
  date published: 2023-03-05
album: Nostalgia
  type: MusicAlbum
  date published: 2023-03-05
album: Toukei
  type: MusicAlbum
  date published: 2023-05-06
album: Toukei
  type: MusicAlbum
  date published: 2023-05-06
album: Hakuu
  type: MusicAlbum
  date published: 2023-07-20
album: Nostalgia pt.2 (Another Story)
  type: MusicAlbum
  date published: 2023-09-22
album: Nostalgia pt.2 (Another Story)
  type: MusicAlbum
  date published: 2023-09-22
album: Smile
  type: MusicAlbum
  date published: 2023-10-10
album: Smile
  type: MusicAlbum
  date published: 2023-10-10
album: Mom
  type: MusicAlbum
  date published: 2024-02-21
album: Mom
  type: MusicAlbum
  date published: 2024-02-21
album: Topophilia
  type: MusicAlbum
  date published: 2024-03-15
  track: Toukei - 2024 Remastered
    type: MusicRecording
    duration: PT2M22S
    duration ms: 142707
    explicit: false
    by artist: 斉藤 尋己
    in album: Topophilia
      type: MusicAlbum
      date published: 2024-03-15
    isrc code: TCJPZ2412622
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T09:10:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x38a0bf1fac9cf76c8bab431d69a066de3d3833515b5cfd9ef4582b421fd3af7c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPZ2412622
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 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 0x38a0bf1fac9cf76c8bab431d69a066de3d3833515b5cfd9ef4582b421fd3af7c. 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/TCJPZ2412622.
      date published: 2026-07-05T10:01:46Z
    audio: Toukei - 2024 Remastered
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 55.824
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.579
      additional property: Energy
        type: PropertyValue
        value: 0.007
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.996
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.946
      additional property: Liveness
        type: PropertyValue
        value: 0.119
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.227
      additional property: Loudness (dB)
        type: PropertyValue
        value: -27.579
      additional property: Key Name
        type: PropertyValue
        value: F
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Smile
    type: MusicRecording
    duration: PT3M6S
    duration ms: 186748
    explicit: false
    by artist: 斉藤 尋己
    in album: Topophilia
      type: MusicAlbum
      date published: 2024-03-15
    isrc code: TCJPX2317382
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T14:32:14+00:00
    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: Smile
album: Suiu
album: Daughter
album: Amami, Movement Ⅰ
album: Amami, Movement I
album: Leaf Leaves Leaf
album: Sounds of My World

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x75f0311c71d33a3adb63578190be144da69e4e967041fb81c24423e8548380eb

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958746

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958746

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPX2317382

OTSTimestamp
type: PropertyValue
value: 2026-07-19T15:36:35Z

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 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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f0311c71d33a3adb63578190be144da69e4e967041fb81c24423e8548380eb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCJPX2317382.
date published: 2026-07-19T15:36:35Z

Smile
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 211.896
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.253
additional property: Energy
  type: PropertyValue
  value: 0.053
additional property: Speechiness
  type: PropertyValue
  value: 0.058
additional property: Acousticness
  type: PropertyValue
  value: 0.985
additional property: Instrumentalness
  type: PropertyValue
  value: 0.895
additional property: Liveness
  type: PropertyValue
  value: 0.09
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.146
additional property: Loudness (dB)
  type: PropertyValue
  value: -26.391
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Minor

Topophilia
type: MusicAlbum
date published: 2024-03-15

Suiu
type: MusicAlbum
date published: 2024-06-05

Suiu
type: MusicAlbum
date published: 2024-06-05

Daughter
type: MusicAlbum
date published: 2024-07-01

Daughter
type: MusicAlbum
date published: 2024-07-01

Amami, Movement Ⅰ
type: MusicAlbum
date published: 2024-10-21

Amami, Movement I
type: MusicAlbum
date published: 2024-10-21

Leaf Leaves Leaf
type: MusicAlbum
date published: 2024-10-23

Leaf Leaves Leaf
type: MusicAlbum
date published: 2024-10-23
track: Leaf Leaves Leaf
  type: MusicRecording
  duration: PT2M43S
  duration ms: 163918
  explicit: false
  by artist: 斉藤 尋己
  in album: Leaf Leaves Leaf
    type: MusicAlbum
    date published: 2024-10-23
  isrc code: TCJPC2414738
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T17:03:31+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd2d25d36210a7e206a33601389698ba00da2d74e89bc7b5e47ec805c1b2d27e1
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958176
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958176
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPC2414738
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T17:14:36Z
  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 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 0xd2d25d36210a7e206a33601389698ba00da2d74e89bc7b5e47ec805c1b2d27e1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/TCJPC2414738.
    date published: 2026-07-15T17:14:36Z
  audio: Leaf Leaves Leaf
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 148.17
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 3
    additional property: Danceability
      type: PropertyValue
      value: 0.316
    additional property: Energy
      type: PropertyValue
      value: 0.017
    additional property: Speechiness
      type: PropertyValue
      value: 0.035
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.931
    additional property: Liveness
      type: PropertyValue
      value: 0.111
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.068
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.776
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major

Sounds of My World
type: MusicAlbum
date published: 2024-11-15

Sounds of My World
type: MusicAlbum
date published: 2024-11-15