Leuca
type: MusicGroup
genre: afro soul
popularity: 17
followers: 2596
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x319da3e9ee0fd5aba14ee28a895a239a1c8a018664fe0ebf6e9c30d2fcb13a33
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953588
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953588
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0216f2a5-3107-4802-8a4f-4b5aaec02ff9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0216f2a5-3107-4802-8a4f-4b5aaec02ff9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0216f2a5-3107-4802-8a4f-4b5aaec02ff9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T04:52:46Z
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 0x319da3e9ee0fd5aba14ee28a895a239a1c8a018664fe0ebf6e9c30d2fcb13a33. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0216f2a5-3107-4802-8a4f-4b5aaec02ff9.json and https://artists.proofprofile.net/proofs/artist/0216f2a5-3107-4802-8a4f-4b5aaec02ff9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T04:52:46Z
album: Soul[o]
  type: MusicAlbum
  date published: 2017-03-31
album: Soul[O]
  type: MusicAlbum
  date published: 2017-03-31
album: Soul[o]
  type: MusicAlbum
  date published: 2017-03-31
album: Home
  type: MusicAlbum
  date published: 2017-07-28
album: Home
  type: MusicAlbum
  date published: 2017-07-28
album: Home
  type: MusicAlbum
  date published: 2017-07-28
album: Right Now
  type: MusicAlbum
  date published: 2018-06-27
album: Right Now
  type: MusicAlbum
  date published: 2018-06-27
album: Don't Tell Me What to Do
  type: MusicAlbum
  date published: 2018-07-13
album: Don't Tell Me What to Do
  type: MusicAlbum
  date published: 2018-07-13
album: Enough
  type: MusicAlbum
  date published: 2019-05-14
album: Enough
  type: MusicAlbum
  date published: 2019-05-14
album: Wake Up
  type: MusicAlbum
  date published: 2019-05-21
album: Wake Up
  type: MusicAlbum
  date published: 2019-05-21
album: Off My Mind
  type: MusicAlbum
  date published: 2019-10-01
album: Off My Mind
  type: MusicAlbum
  date published: 2019-10-01
album: delicate
  type: MusicAlbum
  date published: 2021-04-07
album: Delicate
  type: MusicAlbum
  date published: 2021-04-07
album: Delicate
  type: MusicAlbum
  date published: 2021-04-07
album: Buss My Mind
  type: MusicAlbum
  date published: 2021-11-05
album: Buss My Mind
  type: MusicAlbum
  date published: 2021-11-05
album: TOO NUFF
  type: MusicAlbum
  date published: 2022-02-11
album: TOO NUFF
  type: MusicAlbum
  date published: 2022-02-11
album: SUNRISE
  type: MusicAlbum
  date published: 2022-05-27
album: SUNRISE
  type: MusicAlbum
  date published: 2022-05-27
album: WHY PREE?
  type: MusicAlbum
  date published: 2022-07-29
album: WHY PREE?
  type: MusicAlbum
  date published: 2022-07-29
album: SLOW MOTION
  type: MusicAlbum
  date published: 2022-10-14
album: SLOW MOTION
  type: MusicAlbum
  date published: 2022-10-14
album: SLOW MOTION
  type: MusicAlbum
  date published: 2022-10-14
album: some unspoken thing
  type: MusicAlbum
  date published: 2022-11-18
album: some unspoken thing
  type: MusicAlbum
  date published: 2022-11-18
album: some unspoken thing
  type: MusicAlbum
  date published: 2022-11-18
album: to love you in the dark
  type: MusicAlbum
  date published: 2023-08-18
album: to love you in the dark
  type: MusicAlbum
  date published: 2023-08-18
album: some days
  type: MusicAlbum
  date published: 2023-12-05
album: some days
  type: MusicAlbum
  date published: 2023-12-05
album: take it out on me
  type: MusicAlbum
  date published: 2024-05-31
album: take it out on me
  type: MusicAlbum
  date published: 2024-05-31
album: intercede
  type: MusicAlbum
  date published: 2024-07-26
album: intercede
  type: MusicAlbum
  date published: 2024-07-26
album: lost in the thought of u
  type: MusicAlbum
  date published: 2024-09-20
album: lost in the thought of u
  type: MusicAlbum
  date published: 2024-09-20
album: what's best for us?
  type: MusicAlbum
  date published: 2024-10-25
album: what's best for us?
  type: MusicAlbum
  date published: 2024-10-25
album: HEAVEN
  type: MusicAlbum
  date published: 2025-02-12
album: pieces of home
  type: MusicAlbum
  date published: 2025-03-12
  track: pieces of home
    type: MusicRecording
    duration: PT4M33S
    duration ms: 273555
    explicit: false
    by artist: Leuca
    in album: pieces of home
      type: MusicAlbum
      date published: 2025-03-12
    genre: afro soul
    isrc code: QZPEW2530101
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T01:11:18+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe9595dcdfc4056a0b977db76c71e3ac81bbee1c4f872ac0f4b548705f90ec3d9
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956742
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: pieces of home
album: i SHOULDA KNOWN
album: I LOST CONTROL
album: wearing my sweater
album: WHAT YOU NEED ME FOR?
track: Change On Me (feat. Leuca)

Change On Me (feat. Leuca)
type: MusicRecording
duration: PT3M45S
duration ms: 225441
explicit: false
by artist: Xavier Omär
by artist: Leuca
in album: Pink Lightning - EP
  type: MusicAlbum
  date published: 2017-11-17
genre: alternative-r-b
isrc code: USUYG1167639
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-09T09:47:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe2208db927a9739f8ffcd165607eb64ad97c2e754bf8a547f94c4aae34f1ec14
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953520
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953520
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USUYG1167639
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953520
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T13:32:09+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2208db927a9739f8ffcd165607eb64ad97c2e754bf8a547f94c4aae34f1ec14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1167639.
  date published: 2026-06-13T15:41:10Z
audio: Change On Me (feat. Leuca)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.822
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.695
  additional property: Energy
    type: PropertyValue
    value: 0.485
  additional property: Speechiness
    type: PropertyValue
    value: 0.134
  additional property: Acousticness
    type: PropertyValue
    value: 0.26
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.111
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.352
  additional property: Loudness (dB)
    type: PropertyValue
    value: -12.619
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956742

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPEW2530101

OTSTimestamp
type: PropertyValue
value: 2026-07-05T05:07:15Z

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 0xe9595dcdfc4056a0b977db76c71e3ac81bbee1c4f872ac0f4b548705f90ec3d9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZPEW2530101.
date published: 2026-07-05T05:07:15Z

pieces of home
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 134.636
additional property: Musical Key
  type: PropertyValue
  value: 4
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.56
additional property: Energy
  type: PropertyValue
  value: 0.293
additional property: Speechiness
  type: PropertyValue
  value: 0.058
additional property: Acousticness
  type: PropertyValue
  value: 0.899
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.109
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.267
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.043
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Major

i SHOULDA KNOWN
type: MusicAlbum
date published: 2025-04-16

I LOST CONTROL
type: MusicAlbum
date published: 2025-05-14

wearing my sweater
type: MusicAlbum
date published: 2025-10-14

WHAT YOU NEED ME FOR?
type: MusicAlbum
date published: 2025-11-04