LeffaKingGang
type: MusicGroup
popularity: 10
followers: 297
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xdadb217b5d4e9f5671e154695f5a646b08c3fe2e48e744d5a34c333d78a882d0
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/48b3c0cd-61fc-4ed2-9d1e-7d314c8e7cd3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/48b3c0cd-61fc-4ed2-9d1e-7d314c8e7cd3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/48b3c0cd-61fc-4ed2-9d1e-7d314c8e7cd3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
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 0xdadb217b5d4e9f5671e154695f5a646b08c3fe2e48e744d5a34c333d78a882d0. 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/48b3c0cd-61fc-4ed2-9d1e-7d314c8e7cd3.json and https://artists.proofprofile.net/proofs/artist/48b3c0cd-61fc-4ed2-9d1e-7d314c8e7cd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
album: HÈRCULES:V
  type: MusicAlbum
  date published: 2023-12-25
album: pink cheese green goes
  type: MusicAlbum
  date published: 2024-01-13
album: MANRESA ÉS OPIUM
  type: MusicAlbum
  date published: 2024-02-14
  track: MANRESA ÉS OPIUM
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203950
    explicit: true
    by artist: LeffaKingGang
    in album: MANRESA ÉS OPIUM
      type: MusicAlbum
      date published: 2024-02-14
    isrc code: QZES52439105
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T00:08:57+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3ac1fe7078b2fd089180a808b81e47098f0c8af64bebce3e5dccd29a26dde54a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52439105
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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 0x3ac1fe7078b2fd089180a808b81e47098f0c8af64bebce3e5dccd29a26dde54a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES52439105.
      date published: 2026-07-06T01:26:17Z
    audio: MANRESA ÉS OPIUM
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.949
      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: 0.633
      additional property: Energy
        type: PropertyValue
        value: 0.606
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.266
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.505
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.793
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: EL NOU SO DE LA CATALUNYA CENTRAL
  type: MusicAlbum
  date published: 2024-02-29
album: EL ESQUADRÓN SALCHICHÓN
  type: MusicAlbum
  date published: 2024-05-17
album: rickyedit
  type: MusicAlbum
  date published: 2024-06-24
album: La Costa Guarra
  type: MusicAlbum
  date published: 2024-08-09
album: No m'agrada estar serenu
  type: MusicAlbum
  date published: 2024-08-31
album: Prostis
  type: MusicAlbum
  date published: 2024-10-12
album: TRAPKLIPSIS MIXTAPE
  type: MusicAlbum
  date published: 2024-12-13
  track: El pito d'un nen
    type: MusicRecording
    duration: PT3M3S
    duration ms: 183192
    explicit: true
    by artist: LeffaKingGang
    in album: TRAPKLIPSIS MIXTAPE
      type: MusicAlbum
      date published: 2024-12-13
    isrc code: QZZ7S2472377
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T04:00:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3c477ed5295fe3f652b8f4ae5e05c1a29390cf9ab2e2bc310f77f86fae4fdafd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958690
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958690
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7S2472377
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0x3c477ed5295fe3f652b8f4ae5e05c1a29390cf9ab2e2bc310f77f86fae4fdafd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZZ7S2472377.
      date published: 2026-07-19T07:14:39Z
    audio: El pito d'un nen
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.577
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      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: #GloBages
album: Sota els Mitjons
album: Surfin Sosa 2k25 (Watermelon Paradise)
album: TRAPKLIPSIS MIXTAPE: COWBOY EDITION

Danceability
type: PropertyValue
value: 0.53

Energy
type: PropertyValue
value: 0.812

Speechiness
type: PropertyValue
value: 0.185

Acousticness
type: PropertyValue
value: 0.205

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.321

Valence (Positivity)
type: PropertyValue
value: 0.477

Loudness (dB)
type: PropertyValue
value: -6.471

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Major

#GloBages
type: MusicAlbum
date published: 2025-05-01

Sota els Mitjons
type: MusicAlbum
date published: 2025-07-04

Surfin Sosa 2k25 (Watermelon Paradise)
type: MusicAlbum
date published: 2025-07-24

TRAPKLIPSIS MIXTAPE: COWBOY EDITION
type: MusicAlbum
date published: 2025-10-31