Camayenne Sofa
type: MusicGroup
genre: highlife
description: Camayenne Sofa were one of the most influential popular music groups in Guinea, West Africa in the 1970s. They recorded on the national Syliphone label. Discography La Percee (Syllart) Attaque (Sylla
popularity: 11
followers: 2519
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6060e12ffba6a3b4202aac6a879d407f7af473d6b6a57d5b42a71b830de8b812. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28aad745-e0d6-4347-9bb8-7ddb6b6e5acc.json and https://artists.proofprofile.net/proofs/artist/28aad745-e0d6-4347-9bb8-7ddb6b6e5acc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
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album: La percée - Vol. 2
  type: MusicAlbum
  date published: 1970
album: A grands pas
  type: MusicAlbum
  date published: 1976
  track: Wayakangaï
    type: MusicRecording
    duration: PT4M12S
    duration ms: 252000
    explicit: false
    by artist: Camayenne Sofa
    in album: A grands pas
      type: MusicAlbum
      date published: 1976
    genre: highlife
    isrc code: FR3GQ1120570
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-11T23:44:46Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05148daf60d5ef8459528f63e679540bf394ddde3bb807fae280485a6da44315. Chain 2 (Bitcoin): anchored in block 957629 (2026-07-11T23:44:46Z), 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/FR3GQ1120570.
      date published: 2026-07-11T23:44:46Z
    audio: Wayakangaï
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 167.156
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.407
      additional property: Energy
        type: PropertyValue
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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
        type: PropertyValue
        value: 0.296
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.52
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.325
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
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album: La Percée
  type: MusicAlbum
  date published: 1976-01-01
album: La percée
  type: MusicAlbum
  date published: 1976-01-01
album: A Grands Pas
  type: MusicAlbum
  date published: 1976-01-01
album: La percée
  type: MusicAlbum
  date published: 1976-01-01
album: À grands pas
  type: MusicAlbum
  date published: 1976-01-01
  track: Wayakangai
    type: MusicRecording
    duration: PT4M12S
    duration ms: 252818
    explicit: false
    by artist: Camayenne Sofa
    in album: À grands pas
      type: MusicAlbum
      date published: 1976-01-01
    genre: highlife
    isrc code: GBNRN1545602
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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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
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      date published: 2026-07-14T20:39:42Z
    audio: Wayakangai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 167.251
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      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: Attaque (Bolibana Collection - Merveilles du passé 1977)
album: Attaque …
album: Attaque...
album: Attaque, Vol. 2
album: L'Afrique en fête
album: Ma Guinée

Danceability
type: PropertyValue
value: 0.406

Energy
type: PropertyValue
value: 0.401

Speechiness
type: PropertyValue
value: 0.029

Acousticness
type: PropertyValue
value: 0.744

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.327

Valence (Positivity)
type: PropertyValue
value: 0.586

Loudness (dB)
type: PropertyValue
value: -13.121

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

À grands pas
type: MusicAlbum
date published: 1976-01-01

Attaque (Bolibana Collection - Merveilles du passé 1977)
type: MusicAlbum
date published: 1977

Attaque …
type: MusicAlbum
date published: 1977-01-01

Attaque...
type: MusicAlbum
date published: 1977-01-01

Attaque, Vol. 2
type: MusicAlbum
date published: 1977-01-01

Attaque, Vol. 2
type: MusicAlbum
date published: 1977-01-01

Attaque...
type: MusicAlbum
date published: 1977-01-01

L'Afrique en fête
type: MusicAlbum
date published: 1980

Ma Guinée
type: MusicAlbum
date published: 1980

La percée
type: MusicAlbum
date published: 1984