Nadia Guerfi
type: MusicGroup
genre: raï
popularity: 13
followers: 809
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9af597547fa64b7c4e6c8c0c21e5d6f507cf84c5f90b00848e3150dd8f82da7a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953724
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953724
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8db26861-8e3a-490f-bf36-a7d1e2ad24f6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8db26861-8e3a-490f-bf36-a7d1e2ad24f6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8db26861-8e3a-490f-bf36-a7d1e2ad24f6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:43:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9af597547fa64b7c4e6c8c0c21e5d6f507cf84c5f90b00848e3150dd8f82da7a","name":"Nadia Guerfi","registered_at":"2026-06-14T19:16:13Z","symbol":"NIM0550280","token_address":"0x756e34c2433619d4cd99e07416877f327a45aaa3","type":"artist","uuid":"8db26861-8e3a-490f-bf36-a7d1e2ad24f6"}
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 0x9af597547fa64b7c4e6c8c0c21e5d6f507cf84c5f90b00848e3150dd8f82da7a. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8db26861-8e3a-490f-bf36-a7d1e2ad24f6.json and https://artists.proofprofile.net/proofs/artist/8db26861-8e3a-490f-bf36-a7d1e2ad24f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:43:13Z
  text: {"copyright_id":"0x9af597547fa64b7c4e6c8c0c21e5d6f507cf84c5f90b00848e3150dd8f82da7a","name":"Nadia Guerfi","registered_at":"2026-06-14T19:16:13Z","symbol":"NIM0550280","token_address":"0x756e34c2433619d4cd99e07416877f327a45aaa3","type":"artist","uuid":"8db26861-8e3a-490f-bf36-a7d1e2ad24f6"}
album: Lil ya lil
  type: MusicAlbum
  date published: 2016
album: Ach Dani Nhabou
  type: MusicAlbum
  date published: 2016-01-01
album: Aleef
  type: MusicAlbum
  date published: 2019-07-18
album: Ghir ntaya
  type: MusicAlbum
  date published: 2021-09-17
album: Ya aini Nouhi
  type: MusicAlbum
  date published: 2021-09-27
  track: Ya aini Nouhi
    type: MusicRecording
    duration: PT4M26S
    duration ms: 266234
    explicit: false
    by artist: Nadia Guerfi
    in album: Ya aini Nouhi
      type: MusicAlbum
      date published: 2021-09-27
    genre: raï
    isrc code: QZNWQ2158440
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T15:57:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x12616254fd90835e7e11ad2fe82b1886fec8f092ae003d47610814a05d95689e
    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/QZNWQ2158440
    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 0x12616254fd90835e7e11ad2fe82b1886fec8f092ae003d47610814a05d95689e. 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/QZNWQ2158440.
      date published: 2026-07-05T01:12:41Z
    audio: Ya aini Nouhi
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 93.988
      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: 0.686
      additional property: Energy
        type: PropertyValue
        value: 0.613
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.421
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.053
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.651
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.837
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sabaa Ayam
  type: MusicAlbum
  date published: 2021-10-24
album: Laamar Yegour
  type: MusicAlbum
  date published: 2022-05-26
album: Gamra
  type: MusicAlbum
  date published: 2022-07-25
album: Nadjitek
  type: MusicAlbum
  date published: 2023-03-15
album: Sob Errachrach
  type: MusicAlbum
  date published: 2023-04-26
album: Laures Ynough
  type: MusicAlbum
  date published: 2023-06-22
album: Djendi Khouya
  type: MusicAlbum
  date published: 2023-07-03
album: Petit omar
  type: MusicAlbum
  date published: 2023-10-09
album: Tayara safra
  type: MusicAlbum
  date published: 2023-10-24
album: Guedache 3anat El Djazayer
  type: MusicAlbum
  date published: 2023-10-30
album: Trabek ezza
  type: MusicAlbum
  date published: 2023-11-28
album: ماودعتكم
  type: MusicAlbum
  date published: 2023-12-16
album: Nechad
  type: MusicAlbum
  date published: 2024-07-17
album: Yali t'habouna
  type: MusicAlbum
  date published: 2024-09-03
  track: Yali t'habouna
    type: MusicRecording
    duration: PT4M39S
    duration ms: 279069
    explicit: false
    by artist: Nadia Guerfi
    in album: Yali t'habouna
      type: MusicAlbum
      date published: 2024-09-03
    genre: raï
    isrc code: QZTBC2475802
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T12:00:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc87fd9ffde0ddf07b4d76641f84cecde593a257fffbba050bccb30120aa6101e
    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: Yali t'habouna
album: El Garitta

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 956826

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956826

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBC2475802

OTSTimestamp
type: PropertyValue
value: 2026-07-05T19:27:56Z

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 0xc87fd9ffde0ddf07b4d76641f84cecde593a257fffbba050bccb30120aa6101e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTBC2475802.
date published: 2026-07-05T19:27:56Z

Yali t'habouna
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 172.074
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.552
additional property: Energy
  type: PropertyValue
  value: 0.479
additional property: Speechiness
  type: PropertyValue
  value: 0.092
additional property: Acousticness
  type: PropertyValue
  value: 0.72
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.114
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.804
additional property: Loudness (dB)
  type: PropertyValue
  value: -13.046
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

El Garitta
type: MusicAlbum
date published: 2025-05-07