EF
type: MusicGroup
popularity: 4
followers: 379
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x29aa407fa4f5bffecf56551e8b7a2cb38186eef7e18e55b3a48bda8cc403a46f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5acb5cda-2a58-45df-adc5-c98686bf232b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5acb5cda-2a58-45df-adc5-c98686bf232b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5acb5cda-2a58-45df-adc5-c98686bf232b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0x29aa407fa4f5bffecf56551e8b7a2cb38186eef7e18e55b3a48bda8cc403a46f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5acb5cda-2a58-45df-adc5-c98686bf232b.json and https://artists.proofprofile.net/proofs/artist/5acb5cda-2a58-45df-adc5-c98686bf232b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Brány Pekel
  type: MusicAlbum
  date published: 2020-08-13
album: Snahoe
  type: MusicAlbum
  date published: 2020-08-13
album: Je to v piči že
  type: MusicAlbum
  date published: 2020-09-04
album: VIBE
  type: MusicAlbum
  date published: 2020-11-22
album: LNDV
  type: MusicAlbum
  date published: 2020-11-24
album: Drgs´N´Dmns
  type: MusicAlbum
  date published: 2020-12-26
album: Blood And Pain
  type: MusicAlbum
  date published: 2020-12-30
album: Otec Všech Nemocí
  type: MusicAlbum
  date published: 2021-03-22
album: Není Mi Fajn
  type: MusicAlbum
  date published: 2021-07-22
album: Open Wound
  type: MusicAlbum
  date published: 2021-08-03
album: Chtějí Být Jako My
  type: MusicAlbum
  date published: 2021-08-26
album: PZM
  type: MusicAlbum
  date published: 2021-08-26
album: LGB(ullshit)T
  type: MusicAlbum
  date published: 2021-09-01
album: NAUSEA
  type: MusicAlbum
  date published: 2021-09-23
album: Každý Ráno
  type: MusicAlbum
  date published: 2021-09-29
album: LIMITED
  type: MusicAlbum
  date published: 2021-10-21
album: realworldproblems.
  type: MusicAlbum
  date published: 2021-12-07
album: Let It Blow
  type: MusicAlbum
  date published: 2021-12-23
album: realworldproblems. DELUXE
  type: MusicAlbum
  date published: 2022-01-30
album: Sám Sebe
  type: MusicAlbum
  date published: 2022-09-02
album: get steady
  type: MusicAlbum
  date published: 2023-02-17
album: REVENANT
  type: MusicAlbum
  date published: 2023-05-30
album: VZADU
  type: MusicAlbum
  date published: 2023-06-10
album: PADLÝ STARS
  type: MusicAlbum
  date published: 2023-07-10
album: tenouttaten
  type: MusicAlbum
  date published: 2023-07-17
album: HAVANA
  type: MusicAlbum
  date published: 2023-08-08
album: doublecup
  type: MusicAlbum
  date published: 2023-09-11
album: NA TÝDEN
  type: MusicAlbum
  date published: 2023-09-28
album: nebylo to drogama.
  type: MusicAlbum
  date published: 2023-10-22
album: tvý oči baby
  type: MusicAlbum
  date published: 2023-10-22
album: JTP
  type: MusicAlbum
  date published: 2023-11-22
album: z pasti do trapu.
  type: MusicAlbum
  date published: 2023-12-22
album: BOO?
  type: MusicAlbum
  date published: 2024-02-29
album: ČTYŘI
  type: MusicAlbum
  date published: 2024-04-04
album: Finger Licking Good
  type: MusicAlbum
  date published: 2024-05-22
album: MILIGRAM
  type: MusicAlbum
  date published: 2024-07-02
album: FATHER OF LSD
  type: MusicAlbum
  date published: 2024-07-25
album: FATHER OF LSD (DELUXE)
  type: MusicAlbum
  date published: 2024-08-16
album: SUPERNOVA
  type: MusicAlbum
  date published: 2024-10-28
album: MARŤÁNCI
  type: MusicAlbum
  date published: 2024-11-28
album: eric cartman
  type: MusicAlbum
  date published: 2024-12-23
album: PADESATIKORUNY
  type: MusicAlbum
  date published: 2025-01-05
album: TILTED TOWERS
  type: MusicAlbum
  date published: 2025-01-13
  track: TILTED TOWERS
    type: MusicRecording
    duration: PT1M58S
    duration ms: 118249
    explicit: true
    by artist: EF
    in album: TILTED TOWERS
      type: MusicAlbum
      date published: 2025-01-13
    isrc code: USANG2505092
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T07:09:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x215286bd484d13cff55a514b09a045516aafa48fdde1aa8bd0b6d1bde76c60b7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958388
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958388
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2505092
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T09:14:21Z
    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 0x215286bd484d13cff55a514b09a045516aafa48fdde1aa8bd0b6d1bde76c60b7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USANG2505092.
      date published: 2026-07-17T09:14:21Z
    audio: TILTED TOWERS
album: parfém
album: BENZÍN
album: KOLIBŘÍK
album: HOOVER
album: DROP HIM
album: TDJNJ
album: BIG BODY
album: CITY BOY
album: RAMADAN
album: BPD
album: WATERBOARDING

TILTED TOWERS
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 150.855
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: 0.769
additional property: Energy
  type: PropertyValue
  value: 0.476
additional property: Speechiness
  type: PropertyValue
  value: 0.303
additional property: Acousticness
  type: PropertyValue
  value: 0.052
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.263
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.24
additional property: Loudness (dB)
  type: PropertyValue
  value: -10.551
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Minor

parfém
type: MusicAlbum
date published: 2025-02-09

BENZÍN
type: MusicAlbum
date published: 2025-03-31

KOLIBŘÍK
type: MusicAlbum
date published: 2025-04-13

HOOVER
type: MusicAlbum
date published: 2025-04-27
track: HOOVER
  type: MusicRecording
  duration: PT2M0S
  duration ms: 120000
  explicit: true
  by artist: EF
  in album: HOOVER
    type: MusicAlbum
    date published: 2025-04-27
  isrc code: USANG2577776
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-04T20:26:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x2d60cecbf81d97e57191c12023066bc3173ed9a66038a3d100da9cfb0fd8d16d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956725
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956725
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2577776
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T01:12:41Z
  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 0x2d60cecbf81d97e57191c12023066bc3173ed9a66038a3d100da9cfb0fd8d16d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USANG2577776.
    date published: 2026-07-05T01:12:41Z
  audio: HOOVER
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 170.202
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.607
    additional property: Energy
      type: PropertyValue
      value: 0.692
    additional property: Speechiness
      type: PropertyValue
      value: 0.148
    additional property: Acousticness
      type: PropertyValue
      value: 0.194
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.137
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.413
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.597
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major

DROP HIM
type: MusicAlbum
date published: 2025-05-18

TDJNJ
type: MusicAlbum
date published: 2025-05-25

BIG BODY
type: MusicAlbum
date published: 2025-06-01

CITY BOY
type: MusicAlbum
date published: 2025-06-01

RAMADAN
type: MusicAlbum
date published: 2025-07-04

BPD
type: MusicAlbum
date published: 2025-08-11
track: BPD
  type: MusicRecording
  duration: PT2M40S
  duration ms: 160000
  explicit: true
  by artist: EF
  in album: BPD
    type: MusicAlbum
    date published: 2025-08-11
  isrc code: QMANG2540614
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-20T03:57:38+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x387cb97d2deb0e7fb98e43c944b19ae6a9865c530139ab08f21ccae888e920a8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958822
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958822
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2540614
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-20T07:00:11Z
  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 0x387cb97d2deb0e7fb98e43c944b19ae6a9865c530139ab08f21ccae888e920a8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:11Z), 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/QMANG2540614.
    date published: 2026-07-20T07:00:11Z
  audio: BPD
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 157.026
    additional property: Musical Key
      type: PropertyValue
      value: 11
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.675
    additional property: Energy
      type: PropertyValue
      value: 0.79
    additional property: Speechiness
      type: PropertyValue
      value: 0.077
    additional property: Acousticness
      type: PropertyValue
      value: 0.227
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.259
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.418
    additional property: Loudness (dB)
      type: PropertyValue
      value: -4.813
    additional property: Key Name
      type: PropertyValue
      value: B
    additional property: Mode Name
      type: PropertyValue
      value: Major

WATERBOARDING
type: MusicAlbum
date published: 2025-10-06