DCA
type: MusicGroup
genre: j-rap
genre: j-r&b
description: DCA may refer to: Computers Document Content Architecture, an IBM document standard Dynamic Channel Allocation/Assignment, in wireless networks DTS Coherent Acoustics in DTS (sound system) Gove
popularity: 11
followers: 937
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1b8bb2c0db9e58403ae7202aee918f20293a578e29d27756d21892336a0342e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953633
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953633
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/33bbe1d5-7caa-4117-981a-4a4f5e113662.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/33bbe1d5-7caa-4117-981a-4a4f5e113662.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/33bbe1d5-7caa-4117-981a-4a4f5e113662
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T12:47:11Z
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 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 0xc1b8bb2c0db9e58403ae7202aee918f20293a578e29d27756d21892336a0342e. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33bbe1d5-7caa-4117-981a-4a4f5e113662.json and https://artists.proofprofile.net/proofs/artist/33bbe1d5-7caa-4117-981a-4a4f5e113662.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T12:47:11Z
album: YATSULER
  type: MusicAlbum
  date published: 2018-07-04
album: YATSULER
  type: MusicAlbum
  date published: 2018-07-04
  track: GO AHEAD
    type: MusicRecording
    duration: PT5M6S
    duration ms: 306557
    explicit: true
    by artist: DCA
    in album: YATSULER
      type: MusicAlbum
      date published: 2018-07-04
    genre: j-rap
    genre: j-r&b
    isrc code: TCJPH1831284
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-25T23:05:11+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1554b294fdc649b3f27f16a6570903cce86ea8fed393badf82e1e8c2d330ada9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPH1831284
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x1554b294fdc649b3f27f16a6570903cce86ea8fed393badf82e1e8c2d330ada9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCJPH1831284.
      date published: 2026-07-02T03:55:08Z
    audio: GO AHEAD
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.197
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.662
      additional property: Energy
        type: PropertyValue
        value: 0.815
      additional property: Speechiness
        type: PropertyValue
        value: 0.037
      additional property: Acousticness
        type: PropertyValue
        value: 0.203
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.395
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.651
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: City Up
  type: MusicAlbum
  date published: 2019-09-27
album: City Up
  type: MusicAlbum
  date published: 2019-09-27
album: VIBEZ
  type: MusicAlbum
  date published: 2020-03-13
album: Hydrangea (feat. 13ELL, WAWA & JAYLOX)
  type: MusicAlbum
  date published: 2020-04-10
album: 紫陽花 (feat. 13ELL, WAWA & JAYLOX)
  type: MusicAlbum
  date published: 2020-04-10
album: Stay Home (feat. 13ELL & WAWA)
  type: MusicAlbum
  date published: 2020-04-22
album: Stay Home (feat. 13ELL & WAWA)
  type: MusicAlbum
  date published: 2020-04-22
album: Proof (feat. 13ELL, WAWA & MOON CHILD)
  type: MusicAlbum
  date published: 2020-05-10
album: Proof (feat. 13ELL, WAWA & MOON CHILD)
  type: MusicAlbum
  date published: 2020-05-10
album: HOODIE GOODIE
  type: MusicAlbum
  date published: 2020-07-10
album: HOODIE GOODIE
  type: MusicAlbum
  date published: 2020-07-10
album: YATSULER3
  type: MusicAlbum
  date published: 2021-03-05
album: YATSULER3
  type: MusicAlbum
  date published: 2021-03-05
album: MACHIOSENI (feat. 13ELL, I$$EI & WAWA)
  type: MusicAlbum
  date published: 2022-01-28
album: 街を背に (feat. 13ELL, I$$EI & WAWA)
  type: MusicAlbum
  date published: 2022-01-28
album: The Fault Vine
  type: MusicAlbum
  date published: 2022-06-28
album: CHAIN (feat. I$$EI, 13ELL, JAYLOX & WAWA)
  type: MusicAlbum
  date published: 2023-07-05
album: CHAIN (feat. I$$EI, 13ELL, JAYLOX & WAWA)
  type: MusicAlbum
  date published: 2023-07-05
album: WASSUP (feat. 13ELL, WAWA & YAMATO HAZE)
  type: MusicAlbum
  date published: 2023-10-25
album: WASSUP (feat. 13ELL, WAWA & YAMATO HAZE)
  type: MusicAlbum
  date published: 2023-10-25
album: CHAIN
  type: MusicAlbum
  date published: 2023-12-15
album: CHAIN
  type: MusicAlbum
  date published: 2023-12-15
  track: Paradise
    type: MusicRecording
    duration: PT2M39S
    duration ms: 159250
    explicit: false
    by artist: DCA
    in album: CHAIN
    genre: j-rap
    genre: j-r&b
    isrc code: TCJPY2320546
    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: Paradise
album: Time Limit (feat. JAYLOX, 13ELL, WAWA & I$$EI)
album: The Lights (feat. WAWA, 13ELL, AZNALLY & I$$EI)

DCA
type: MusicGroup

CHAIN
type: MusicAlbum
date published: 2023-12-15

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-16T03:05:11+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xc703f616626a18e2addec52cbb38e137806c9353b4b1a69bd48a070ae7e8b44b

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958234

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958234

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCJPY2320546

OTSTimestamp
type: PropertyValue
value: 2026-07-16T03:46:09Z

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 0xc703f616626a18e2addec52cbb38e137806c9353b4b1a69bd48a070ae7e8b44b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPY2320546.
date published: 2026-07-16T03:46:09Z

Paradise
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 99.994
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: 0.811
additional property: Energy
  type: PropertyValue
  value: 0.672
additional property: Speechiness
  type: PropertyValue
  value: 0.093
additional property: Acousticness
  type: PropertyValue
  value: 0.035
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.328
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.381
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.57
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Time Limit (feat. JAYLOX, 13ELL, WAWA & I$$EI)
type: MusicAlbum
date published: 2024-06-04

Time Limit (feat. JAYLOX, 13ELL, WAWA & I$$EI)
type: MusicAlbum
date published: 2024-06-04

The Lights (feat. WAWA, 13ELL, AZNALLY & I$$EI)
type: MusicAlbum
date published: 2024-08-07

The Lights (feat. WAWA, 13ELL, AZNALLY & I$$EI)
type: MusicAlbum
date published: 2024-08-07