A.F.R.O
type: MusicGroup
popularity: 6
followers: 1287
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd72f4a01766d4eb443ba18201d53e8e184541282dcdc21c8c4e6de37ef70c22e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8babdc88-78e2-4614-aac7-f6606a842fd2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8babdc88-78e2-4614-aac7-f6606a842fd2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8babdc88-78e2-4614-aac7-f6606a842fd2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
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 0xd72f4a01766d4eb443ba18201d53e8e184541282dcdc21c8c4e6de37ef70c22e. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8babdc88-78e2-4614-aac7-f6606a842fd2.json and https://artists.proofprofile.net/proofs/artist/8babdc88-78e2-4614-aac7-f6606a842fd2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: SORANOMUKOUE
  type: MusicAlbum
  date published: 2011-09-28
album: KOE
  type: MusicAlbum
  date published: 2011-11-30
album: ア、フ、とくれば…?
  type: MusicAlbum
  date published: 2012-03-14
album: アフロ11号
  type: MusicAlbum
  date published: 2012-04-11
album: 北風サマー
  type: MusicAlbum
  date published: 2012-07-04
album: キタイチニシニ
  type: MusicAlbum
  date published: 2012-10-24
album: 冬の贈り物
  type: MusicAlbum
  date published: 2013-01-23
album: 北風アワー
  type: MusicAlbum
  date published: 2013-02-06
album: 青
  type: MusicAlbum
  date published: 2013-07-03
album: アフロより愛をこめて
  type: MusicAlbum
  date published: 2014-04-30
  track: 記念日 with HIDE from GReeeeN
    type: MusicRecording
    duration: PT4M51S
    duration ms: 291413
    explicit: false
    by artist: A.F.R.O
    in album: アフロより愛をこめて
      type: MusicAlbum
      date published: 2014-04-30
    isrc code: JPTF01404606
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T14:24:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf4bbf60153aec461e47534b4d95b21a27391f2b15132c0222c30f096fa8a224f
    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/JPTF01404606
    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 0xf4bbf60153aec461e47534b4d95b21a27391f2b15132c0222c30f096fa8a224f. 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/JPTF01404606.
      date published: 2026-07-05T01:43:49Z
    audio: 記念日 with HIDE from GReeeeN
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 96.951
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.648
      additional property: Energy
        type: PropertyValue
        value: 0.782
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.197
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.293
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.568
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.469
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: HERO
  type: MusicAlbum
  date published: 2015-06-17
album: FAMILY
  type: MusicAlbum
  date published: 2015-06-17
  track: FAMILY
    type: MusicRecording
    duration: PT4M6S
    duration ms: 246153
    explicit: false
    by artist: A.F.R.O
    in album: FAMILY
      type: MusicAlbum
      date published: 2015-06-17
    isrc code: JPTF01510101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T16:55:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6e680b68001b52bada00f80873faa1303f78940c16d89686499d49eda6538e41
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958447
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958447
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPTF01510101
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:47:19Z
    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 0x6e680b68001b52bada00f80873faa1303f78940c16d89686499d49eda6538e41. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPTF01510101.
      date published: 2026-07-17T19:47:19Z
    audio: FAMILY
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 92.975
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      additional property: Danceability
      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: 7th
album: 始めの一歩
album: Watch me

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.547

Energy
type: PropertyValue
value: 0.727

Speechiness
type: PropertyValue
value: 0.155

Acousticness
type: PropertyValue
value: 0.211

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.093

Valence (Positivity)
type: PropertyValue
value: 0.595

Loudness (dB)
type: PropertyValue
value: -5.485

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

7th
type: MusicAlbum
date published: 2015-08-26

始めの一歩
type: MusicAlbum
date published: 2015-10-09

Watch me
type: MusicAlbum
date published: 2016-10-19