Francisca Pereira
type: MusicGroup
description: Francisca Lucas Pereira Gomes (born 1942), normally known as Francisca Pereira, is a former Bissau-Guinean nurse, independence activist and current politician. She was born in Bolama, the former capi
popularity: 7
followers: 283
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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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 0x2eec805cf1629303b7d76e79c06b990838b67dd5bc5dce3c85c394eb33ce647f. 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/52162111-3b30-4cdb-8f3b-2c0d5df64518.json and https://artists.proofprofile.net/proofs/artist/52162111-3b30-4cdb-8f3b-2c0d5df64518.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x2eec805cf1629303b7d76e79c06b990838b67dd5bc5dce3c85c394eb33ce647f","name":"Francisca Pereira","registered_at":"2026-06-16T18:20:14Z","symbol":"NIM1135994","token_address":"0x3819866852fc7cdeb606bf25e9df90bf0f6dc34f","type":"artist","uuid":"52162111-3b30-4cdb-8f3b-2c0d5df64518"}
album: Meditações de Respiratórias em Português
  type: MusicAlbum
  date published: 2019-08-27
  track: Meditação Guiada: Respiração de dois minutos
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    by artist: Francisca Pereira
    in album: Meditações de Respiratórias em Português
      type: MusicAlbum
      date published: 2019-08-27
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    additional property: OTSTimestamp
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    additional property: OTSVerifyInstructions
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      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 0x74df5598f613883d4b9836d8ecbc20133c729dde46da31f991444fe4056e6564. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:25:46Z), 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/NLRD51952873.
      date published: 2026-07-15T22:25:46Z
    audio: Meditação Guiada: Respiração de dois minutos
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      additional property: Acousticness
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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      additional property: Key Name
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        value: C
      additional property: Mode Name
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  track: Meditação Guiada: Cinco minutos de Respiração
    type: MusicRecording
    duration: PT5M49S
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    by artist: Francisca Pereira
    in album: Meditações de Respiratórias em Português
      type: MusicAlbum
      date published: 2019-08-27
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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
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d7b1e74a0052667982ce6d4a62061525a3677c5b825cb09b5d3bb503acf862. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NLRD51952875.
      date published: 2026-07-03T10:47:44Z
    audio: Meditação Guiada: Cinco minutos de Respiração
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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
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
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value: -25.293

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major