J. Cardim
type: MusicGroup
description: J. Cardim is an American/Brazilian music producerJ. Cardim | Check Out New Hip Hop Artists & Upcoming Rappers | HipHop DX who has lived in Rio de Janeiro, Brazil, Cambridge, Massachusetts, and current
popularity: 17
followers: 484
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additional property: OTSVerifyInstructions
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  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
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  date published: 2026-06-14T19:07:16Z
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album: Breathe Thru the Years
  type: MusicAlbum
  date published: 2005-05-29
album: G Like Me
  type: MusicAlbum
  date published: 2010-07-11
album: What You Sayin' (feat. Styles P., Masspike Miles, Tuge Palermo and French Montana)
  type: MusicAlbum
  date published: 2010-07-12
album: What you sayin'
  type: MusicAlbum
  date published: 2010-07-12
album: Hood 2 (feat. Joe Budden, Sheek Louch, and Sha Stimuli)
  type: MusicAlbum
  date published: 2010-07-16
album: Dice Music Group: In The Crowd (presented by The New Music Cartel)
  type: MusicAlbum
  date published: 2010-07-21
album: Get Mine
  type: MusicAlbum
  date published: 2023-08-19
album: Hood
  type: MusicAlbum
  date published: 2023-11-20
album: See Me Right Now
  type: MusicAlbum
  date published: 2023-11-22
album: The Three Pack
  type: MusicAlbum
  date published: 2023-11-22
album: Security
  type: MusicAlbum
  date published: 2023-12-12
album: Hood 2
  type: MusicAlbum
  date published: 2024-01-09
album: Move
  type: MusicAlbum
  date published: 2024-01-26
album: Move
  type: MusicAlbum
  date published: 2024-01-26
album: Keep On
  type: MusicAlbum
  date published: 2024-02-02
album: Follow My Lead
  type: MusicAlbum
  date published: 2024-03-25
album: Chill
  type: MusicAlbum
  date published: 2024-04-02
album: Money’s on Me
  type: MusicAlbum
  date published: 2024-04-02
album: Long Over Due , Vol. 1
  type: MusicAlbum
  date published: 2024-04-19
album: No Idea (2024 Remastered)
  type: MusicAlbum
  date published: 2024-05-03
album: Holla at a Playa
  type: MusicAlbum
  date published: 2024-05-13
album: Change Gonna Come
  type: MusicAlbum
  date published: 2024-05-24
album: Money’s on Me
  type: MusicAlbum
  date published: 2024-05-31
album: That’s My Life
  type: MusicAlbum
  date published: 2024-06-07
album: Change Gonna Come
  type: MusicAlbum
  date published: 2024-06-13
album: These Bitches
  type: MusicAlbum
  date published: 2024-07-16
  track: These Bitches
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-20T16:42:34Z
    audio: These Bitches
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album: Remember the Titans
album: Toast to the Life
album: That's Life
album: Breathe Thru the Years (2024 Remastered)
album: Trigga finger
album: LEAD
album: Lamborghini
album: Sopranos
album: Ryders (Da Ville to da Stuy)
album: Rubber Grip
album: No Days Off
album: fallin' again
album: 55 DJ's
album: Let's Toast
album: BEATS, Vol. 1
album: Fin De Semana
album: Ryders
album: BEATS, vol. 2
album: Lights Out
track: Wagwan
track: Promessas
track: Contas Pra Pagar
track: Fiança Paga
track: Tucuns (5:57)
track: Consequências
track: RapCoin (Intro)
track: Refrões e Cifrões (R&$)

Wagwan
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by artist: Akira Presidente
by artist: J. Cardim
in album: Êxito
  type: MusicAlbum
  date published: 2020-12-11
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00985fdfc498c0d3d0202b44a578f617fb590533a4ac52b026ce9344a1f0ae54. 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/BXFGZ2000045.
  date published: 2026-07-02T03:55:08Z
audio: Wagwan
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Promessas
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duration ms: 243690
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by artist: Akira Presidente
by artist: J. Cardim
in album: Nandi
  type: MusicAlbum
  date published: 2019-05-30
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
isrc code: BXFGZ1900017
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  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
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T16:51:38Z
audio: Promessas
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Contas Pra Pagar
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by artist: J. Cardim
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  date published: 2017-05-12
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
isrc code: BXFGZ1800007
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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
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67453401c32bddaf4fe479f9b2bdf1d1f47eeec3ccb74a81b51784a872a9229. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BXFGZ1800007.
  date published: 2026-07-07T18:39:05Z
audio: Contas Pra Pagar
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Fiança Paga
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duration: PT3M16S
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by artist: Akira Presidente
by artist: J. Cardim
in album: Melhoria Tape, Vol. 1
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  date published: 2021-11-17
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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additional property: ProofProfileEvidenceStatus
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T11:34:59Z
audio: Fiança Paga
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    value: 0.085
  additional property: Acousticness
    type: PropertyValue
    value: 0.462
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.192
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.777
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.171
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tucuns (5:57)
type: MusicRecording
duration: PT3M35S
duration ms: 215154
explicit: false
by artist: Akira Presidente
by artist: J. Cardim
in album: Melhoria Tape, Vol. 1
  type: MusicAlbum
  date published: 2021-11-17
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
isrc code: BRIXW2100004
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:56:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc1b3c6eb0783d9064523227e69138ac233440f505c1f4ce484c78f8fb7f7876b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957073
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957073
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRIXW2100004
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T18:39:05Z
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: 957073
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T18:39:05+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 0xc1b3c6eb0783d9064523227e69138ac233440f505c1f4ce484c78f8fb7f7876b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRIXW2100004.
  date published: 2026-07-07T18:39:05Z
audio: Tucuns (5:57)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.781
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.731
  additional property: Energy
    type: PropertyValue
    value: 0.595
  additional property: Speechiness
    type: PropertyValue
    value: 0.292
  additional property: Acousticness
    type: PropertyValue
    value: 0.589
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.108
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.365
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.021
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Consequências
type: MusicRecording
duration: PT4M6S
duration ms: 246766
explicit: false
by artist: Akira Presidente
by artist: JXNV$
by artist: Sain
by artist: J. Cardim
in album: Fa7her
  type: MusicAlbum
  date published: 2017-05-12
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e34888931eb3d50ab5ad9cbbcabe095ac860f14fb7a507efd745af25ac3d10b. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/BXFGZ1700028.
  date published: 2026-07-30T14:44:50Z
audio: Consequências
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 140.32
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.634
  additional property: Energy
    type: PropertyValue
    value: 0.549
  additional property: Speechiness
    type: PropertyValue
    value: 0.388
  additional property: Acousticness
    type: PropertyValue
    value: 0.673
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.272
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.272
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.049
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: BXFGZ1700028
additional property: CopyrightID
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: 960266
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T14:44:50+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXFGZ1700028
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960266
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960266
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T14:44:50+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 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

RapCoin (Intro)
type: MusicRecording
duration: PT2M46S
duration ms: 166983
explicit: false
by artist: Akira Presidente
by artist: J. Cardim
in album: Melhoria Tape, Vol. 1
  type: MusicAlbum
  date published: 2021-11-17
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a475994e7d6bc857a549ace96bb75329470d82210a77addf53670aa1401007. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRIXW2100001.
  date published: 2026-07-30T17:23:26Z
audio: RapCoin (Intro)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.542
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.662
  additional property: Energy
    type: PropertyValue
    value: 0.675
  additional property: Speechiness
    type: PropertyValue
    value: 0.275
  additional property: Acousticness
    type: PropertyValue
    value: 0.027
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.188
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.353
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.323
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: BRIXW2100001
additional property: CopyrightID
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: 960284
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T17:23:26+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRIXW2100001
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960284
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960284
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:23:26+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 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

Refrões e Cifrões (R&$)
type: MusicRecording
duration: PT3M15S
duration ms: 195966
explicit: false
by artist: Akira Presidente
by artist: J. Cardim
by artist: Ainá
in album: Melhoria Tape, Vol. 1
  type: MusicAlbum
  date published: 2021-11-17
genre: brazilian-hip-hop
genre: boom-bap
genre: brazilian-trap
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c875e67d2137b76c5b6c801696e3c29b149f72a4bf45bce3a589853c175221. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRIXW2100003.
  date published: 2026-07-30T02:37:10Z
audio: Refrões e Cifrões (R&$)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.999
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.776
  additional property: Energy
    type: PropertyValue
    value: 0.447
  additional property: Speechiness
    type: PropertyValue
    value: 0.104
  additional property: Acousticness
    type: PropertyValue
    value: 0.227
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.302
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.155
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.737
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: BRIXW2100003
additional property: CopyrightID
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: 960200
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T02:37:10+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRIXW2100003
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960200
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960200
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T02:37:10+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 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

Remember the Titans
type: MusicAlbum
date published: 2024-08-02

Change Gonna Come
type: MusicAlbum
date published: 2024-08-15

Toast to the Life
type: MusicAlbum
date published: 2024-08-25

That's Life
type: MusicAlbum
date published: 2024-09-20

Breathe Thru the Years (2024 Remastered)
type: MusicAlbum
date published: 2024-10-11

Trigga finger
type: MusicAlbum
date published: 2024-10-31

LEAD
type: MusicAlbum
date published: 2024-11-01

Lamborghini
type: MusicAlbum
date published: 2024-11-02

Sopranos
type: MusicAlbum
date published: 2024-11-30

Ryders (Da Ville to da Stuy)
type: MusicAlbum
date published: 2025-01-31
track: Ryders (Da Ville to da Stuy)
  type: MusicRecording
  duration: PT2M59S
  duration ms: 179653
  explicit: true
  by artist: J. Cardim
  in album: Ryders (Da Ville to da Stuy)
    type: MusicAlbum
    date published: 2025-01-31
  isrc code: TCAJF2523020
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-28T22:05:26+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x9d80dd4e849b79e09c4ca835d1bc7f2a9934a2a6daf75d7972ea3167e1b60f53
  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/TCAJF2523020
  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 0x9d80dd4e849b79e09c4ca835d1bc7f2a9934a2a6daf75d7972ea3167e1b60f53. 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/TCAJF2523020.
    date published: 2026-07-02T16:51:38Z
  audio: Ryders (Da Ville to da Stuy)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 166.391
    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: 0.435
    additional property: Energy
      type: PropertyValue
      value: 0.827
    additional property: Speechiness
      type: PropertyValue
      value: 0.483
    additional property: Acousticness
      type: PropertyValue
      value: 0.027
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.281
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.288
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.298
    additional property: Key Name
      type: PropertyValue
      value: Bb
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Security
type: MusicAlbum
date published: 2025-02-14

Rubber Grip
type: MusicAlbum
date published: 2025-02-21

No Days Off
type: MusicAlbum
date published: 2025-03-21
track: No Days Off
  type: MusicRecording
  duration: PT3M34S
  duration ms: 214390
  explicit: true
  by artist: J. Cardim
  in album: No Days Off
    type: MusicAlbum
    date published: 2025-03-21
  isrc code: QZHNA2536400
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T02:34:47+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x8b8cc95f7f0a5eb508e8ccca1040f12740584090cf2b20d86442f22dbc332dcd
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956889
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956889
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNA2536400
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T06:56:49Z
  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 0x8b8cc95f7f0a5eb508e8ccca1040f12740584090cf2b20d86442f22dbc332dcd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHNA2536400.
    date published: 2026-07-06T06:56:49Z
  audio: No Days Off
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 81.986
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.448
    additional property: Energy
      type: PropertyValue
      value: 0.866
    additional property: Speechiness
      type: PropertyValue
      value: 0.199
    additional property: Acousticness
      type: PropertyValue
      value: 0.001
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.302
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.278
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.9
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major

fallin' again
type: MusicAlbum
date published: 2025-04-18

55 DJ's
type: MusicAlbum
date published: 2025-04-25
track: 55 DJ's
  type: MusicRecording
  duration: PT3M14S
  duration ms: 194906
  explicit: true
  by artist: J. Cardim
  in album: 55 DJ's
    type: MusicAlbum
    date published: 2025-04-25
  isrc code: QZK6K2535055
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T05:23:15+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1a6f4603e1f59b1314b2fa7fa0dd980a55d8ddf8407ce73ae95b2f7fedff7c3b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958110
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958110
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6K2535055
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T06:57:12Z
  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 0x1a6f4603e1f59b1314b2fa7fa0dd980a55d8ddf8407ce73ae95b2f7fedff7c3b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZK6K2535055.
    date published: 2026-07-15T06:57:12Z
  audio: 55 DJ's
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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Let's Toast
type: MusicAlbum
date published: 2025-05-02

BEATS, Vol. 1
type: MusicAlbum
date published: 2025-05-30

Fin De Semana
type: MusicAlbum
date published: 2025-08-01

Ryders
type: MusicAlbum
date published: 2025-08-08

BEATS, vol. 2
type: MusicAlbum
date published: 2025-08-29

Lights Out
type: MusicAlbum
date published: 2025-09-19