UNDERS21 UK
type: MusicGroup
popularity: 4
followers: 133
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x70af5088bd96b5c1584416d7c7b2e70ed6e36ea3c989d5b0ce3b7d4aeabc574a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4da6585e-6736-4b74-8b0d-a3cac865c241.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4da6585e-6736-4b74-8b0d-a3cac865c241.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4da6585e-6736-4b74-8b0d-a3cac865c241
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x70af5088bd96b5c1584416d7c7b2e70ed6e36ea3c989d5b0ce3b7d4aeabc574a","name":"UNDERS21 UK","registered_at":"2026-06-16T16:37:32Z","symbol":"NIM1111498","token_address":"0x28df88b0f19339041af1e8270ac3c45ab207a441","type":"artist","uuid":"4da6585e-6736-4b74-8b0d-a3cac865c241"}
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 0x70af5088bd96b5c1584416d7c7b2e70ed6e36ea3c989d5b0ce3b7d4aeabc574a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4da6585e-6736-4b74-8b0d-a3cac865c241.json and https://artists.proofprofile.net/proofs/artist/4da6585e-6736-4b74-8b0d-a3cac865c241.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x70af5088bd96b5c1584416d7c7b2e70ed6e36ea3c989d5b0ce3b7d4aeabc574a","name":"UNDERS21 UK","registered_at":"2026-06-16T16:37:32Z","symbol":"NIM1111498","token_address":"0x28df88b0f19339041af1e8270ac3c45ab207a441","type":"artist","uuid":"4da6585e-6736-4b74-8b0d-a3cac865c241"}
album: Reset
  type: MusicAlbum
  date published: 2022-12-11
album: Piel
  type: MusicAlbum
  date published: 2022-12-13
album: Antibalas
  type: MusicAlbum
  date published: 2022-12-17
album: Perros de Reserva
  type: MusicAlbum
  date published: 2022-12-18
album: K Se Guaye
  type: MusicAlbum
  date published: 2022-12-19
album: Bvd Love
  type: MusicAlbum
  date published: 2023-02-15
album: Gangsta Love
  type: MusicAlbum
  date published: 2023-06-19
album: Smoke Life 420
  type: MusicAlbum
  date published: 2023-10-09
album: Rappi
  type: MusicAlbum
  date published: 2023-12-01
album: Amor y Calle
  type: MusicAlbum
  date published: 2024-02-14
album: Poison
  type: MusicAlbum
  date published: 2024-03-11
album: Amor de Callejón
  type: MusicAlbum
  date published: 2024-03-29
album: Ya No
  type: MusicAlbum
  date published: 2024-05-01
album: L.O.V.E.R.S.
  type: MusicAlbum
  date published: 2024-06-19
album: Solos
  type: MusicAlbum
  date published: 2024-08-01
album: Ambicion
  type: MusicAlbum
  date published: 2024-08-08
album: Ufo
  type: MusicAlbum
  date published: 2025-05-06
album: Psicoloco
  type: MusicAlbum
  date published: 2025-08-20
album: Blue
  type: MusicAlbum
  date published: 2025-09-06
track: Vida De Perro
  type: MusicRecording
  duration: PT5M36S
  duration ms: 336015
  explicit: false
  by artist: Baeck Uk
  by artist: Latin Geisha
  by artist: UNDERS21 UK
  by artist: Bleyz
  by artist: B-ey
  in album: UNDERLOKEANDO
    type: MusicAlbum
    date published: 2022-12-10
  isrc code: QZTB62284735
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T19:12:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd763bda7558ec32938cbf5ba3dc5e2000856d9d3bd48aff9611735fee2c963ea
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62284735
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 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 0xd763bda7558ec32938cbf5ba3dc5e2000856d9d3bd48aff9611735fee2c963ea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB62284735.
    date published: 2026-07-08T03:20:19Z
  audio: Vida De Perro
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 111.155
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.789
    additional property: Energy
      type: PropertyValue
      value: 0.704
    additional property: Speechiness
      type: PropertyValue
      value: 0.33
    additional property: Acousticness
      type: PropertyValue
      value: 0.703
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.092
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.864
    additional property: Loudness (dB)
      type: PropertyValue
      value: -10.302
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Rola Una Yonk
  type: MusicRecording
  duration: PT4M35S
  duration ms: 275411
  explicit: false
  by artist: Baeck Uk
  by artist: B-ey
  by artist: UNDERS21 UK
  by artist: Perk
  in album: UNDERLOKEANDO
    type: MusicAlbum
    date published: 2022-12-10
  isrc code: QZTB62284737
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  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: Rola Una Yonk
track: Pussy

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-30T00:54:11+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x027fdf92515b79c0e6650901ea4f53db09b414fca029a87d63310bc4e68c9893

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960183

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960183

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62284737

OTSTimestamp
type: PropertyValue
value: 2026-07-30T01:10:20Z

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 0x027fdf92515b79c0e6650901ea4f53db09b414fca029a87d63310bc4e68c9893. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QZTB62284737.
date published: 2026-07-30T01:10:20Z

Rola Una Yonk
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 138.418
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: 0.92
additional property: Energy
  type: PropertyValue
  value: 0.633
additional property: Speechiness
  type: PropertyValue
  value: 0.336
additional property: Acousticness
  type: PropertyValue
  value: 0.201
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.188
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.335
additional property: Loudness (dB)
  type: PropertyValue
  value: -10.685
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major

Pussy
type: MusicRecording
duration: PT2M20S
duration ms: 140457
explicit: false
by artist: Baeck Uk
by artist: UNDERS21 UK
in album: UNDERLOKEANDO
  type: MusicAlbum
  date published: 2022-12-10
isrc code: QZTB62284740
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T19:43:10+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x544f24c735684cdba2f11e2b768c74143a3d352fef1cc722c5c1b6aca072d3f6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62284740
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47Z
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 0x544f24c735684cdba2f11e2b768c74143a3d352fef1cc722c5c1b6aca072d3f6. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZTB62284740.
  date published: 2026-07-29T21:09:47Z
audio: Pussy
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.013
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.843
  additional property: Energy
    type: PropertyValue
    value: 0.51
  additional property: Speechiness
    type: PropertyValue
    value: 0.53
  additional property: Acousticness
    type: PropertyValue
    value: 0.014
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.325
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.651
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.186
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor