Manabu Nagayama
type: MusicGroup
genre: j-dance
popularity: 21
followers: 828
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4c0ca12d8a8bb47f6b023628c31fdc98fc26a0aadab3a719363a6873ababd91
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/738d8c02-8474-4798-95ec-cadaf38d2bcd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/738d8c02-8474-4798-95ec-cadaf38d2bcd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/738d8c02-8474-4798-95ec-cadaf38d2bcd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4c0ca12d8a8bb47f6b023628c31fdc98fc26a0aadab3a719363a6873ababd91","name":"Manabu Nagayama","registered_at":"2026-06-12T00:59:20Z","symbol":"NIM0149761","token_address":"0x7461e7c2852b42e04a156d8c872a4793ecc60496","type":"artist","uuid":"738d8c02-8474-4798-95ec-cadaf38d2bcd"}
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 0xd4c0ca12d8a8bb47f6b023628c31fdc98fc26a0aadab3a719363a6873ababd91. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/738d8c02-8474-4798-95ec-cadaf38d2bcd.json and https://artists.proofprofile.net/proofs/artist/738d8c02-8474-4798-95ec-cadaf38d2bcd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0xd4c0ca12d8a8bb47f6b023628c31fdc98fc26a0aadab3a719363a6873ababd91","name":"Manabu Nagayama","registered_at":"2026-06-12T00:59:20Z","symbol":"NIM0149761","token_address":"0x7461e7c2852b42e04a156d8c872a4793ecc60496","type":"artist","uuid":"738d8c02-8474-4798-95ec-cadaf38d2bcd"}
album: Beautiful Beats
  type: MusicAlbum
  date published: 2011-10-12
album: Low Tension
  type: MusicAlbum
  date published: 2015-01-07
  track: Low Tension
    type: MusicRecording
    duration: PT4M42S
    duration ms: 282000
    explicit: false
    by artist: Manabu Nagayama
    in album: Low Tension
      type: MusicAlbum
      date published: 2015-01-07
    genre: j-dance
    isrc code: DEH741412864
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T03:57:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x382d3ffc40cfd4679126844218c4a9008bf4113f295219d5344cde4558d8cd3f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEH741412864
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0x382d3ffc40cfd4679126844218c4a9008bf4113f295219d5344cde4558d8cd3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEH741412864.
      date published: 2026-07-02T16:51:38Z
    audio: Low Tension
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.657
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.776
      additional property: Energy
        type: PropertyValue
        value: 0.699
      additional property: Speechiness
        type: PropertyValue
        value: 0.063
      additional property: Acousticness
        type: PropertyValue
        value: 0.017
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.892
      additional property: Liveness
        type: PropertyValue
        value: 0.12
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.377
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.732
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Walker / Sunset
  type: MusicAlbum
  date published: 2015-12-21
album: Walker / Sunset
  type: MusicAlbum
  date published: 2016-01-04
album: SORA-SKY MAGIC
  type: MusicAlbum
  date published: 2016-09-28
album: Low Tension
  type: MusicAlbum
  date published: 2019-10-04
album: Low Tension
  type: MusicAlbum
  date published: 2019-10-04
  track: Low Tension - 2014 Remastered
    type: MusicRecording
    duration: PT4M40S
    duration ms: 280654
    explicit: false
    by artist: Manabu Nagayama
    in album: Low Tension
      type: MusicAlbum
      date published: 2019-10-04
    genre: j-dance
    isrc code: GB2DZ1900051
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T15:39:37+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1cd6439714473e97dc792842159c57c5155ed54ba323fd6223c0dd51ddd38209
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956545
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB2DZ1900051
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T19:59:51Z
    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 0x1cd6439714473e97dc792842159c57c5155ed54ba323fd6223c0dd51ddd38209. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB2DZ1900051.
      date published: 2026-07-03T19:59:51Z
    audio: Low Tension - 2014 Remastered
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.01
      additional property: Musical Key
        type: PropertyValue
        value: 5
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.682
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Can't Wait
album: Monster
album: Touch'n Go
album: Night Birds
album: Light And Shadow

Energy
type: PropertyValue
value: 0.683

Speechiness
type: PropertyValue
value: 0.047

Acousticness
type: PropertyValue
value: 0.006

Instrumentalness
type: PropertyValue
value: 0.833

Liveness
type: PropertyValue
value: 0.158

Valence (Positivity)
type: PropertyValue
value: 0.318

Loudness (dB)
type: PropertyValue
value: -10.296

Key Name
type: PropertyValue
value: F

Mode Name
type: PropertyValue
value: Major

Can't Wait
type: MusicAlbum
date published: 2021-02-10

Can't Wait
type: MusicAlbum
date published: 2021-02-10

Monster
type: MusicAlbum
date published: 2021-03-10

Monster
type: MusicAlbum
date published: 2021-03-10

Touch'n Go
type: MusicAlbum
date published: 2021-04-07

Touch'n Go
type: MusicAlbum
date published: 2021-04-07

Night Birds
type: MusicAlbum
date published: 2021-06-25

Night Birds
type: MusicAlbum
date published: 2021-06-25

Light And Shadow
type: MusicAlbum
date published: 2025-02-07
track: Light And Shadow
  type: MusicRecording
  duration: PT4M45S
  duration ms: 285938
  explicit: false
  by artist: Manabu Nagayama
  in album: Light And Shadow
    type: MusicAlbum
    date published: 2025-02-07
  genre: j-dance
  isrc code: NLM971900657
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T20:13:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7131d6fb6b3eac5b21b1d247bd8aca1a1e9e35eab993bc765cf64cb0f0c3985d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956560
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956560
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLM971900657
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T23:28:02Z
  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 0x7131d6fb6b3eac5b21b1d247bd8aca1a1e9e35eab993bc765cf64cb0f0c3985d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NLM971900657.
    date published: 2026-07-03T23:28:02Z
  audio: Light And Shadow
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 123.999
    additional property: Musical Key
      type: PropertyValue
      value: 10
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.713
    additional property: Energy
      type: PropertyValue
      value: 0.515
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.267
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.894
    additional property: Liveness
      type: PropertyValue
      value: 0.093
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.393
    additional property: Loudness (dB)
      type: PropertyValue
      value: -15.776
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor