Fefi Mera
type: MusicGroup
genre: moombahton
popularity: 10
followers: 535
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x77c994d6d87a29a79512c2b5c68bd3b4a2b21333fcf04adc4a0475063fd048ff
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954631
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954631
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf504d49-4131-45f4-8af3-c6dc3454550a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cf504d49-4131-45f4-8af3-c6dc3454550a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cf504d49-4131-45f4-8af3-c6dc3454550a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x77c994d6d87a29a79512c2b5c68bd3b4a2b21333fcf04adc4a0475063fd048ff","name":"Fefi Mera","registered_at":"2026-06-21T00:14:52Z","symbol":"NIM1759745","token_address":"0x97a208e5745b0b927c35ca38e5650502f5b9eab9","type":"artist","uuid":"cf504d49-4131-45f4-8af3-c6dc3454550a"}
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 0x77c994d6d87a29a79512c2b5c68bd3b4a2b21333fcf04adc4a0475063fd048ff. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf504d49-4131-45f4-8af3-c6dc3454550a.json and https://artists.proofprofile.net/proofs/artist/cf504d49-4131-45f4-8af3-c6dc3454550a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x77c994d6d87a29a79512c2b5c68bd3b4a2b21333fcf04adc4a0475063fd048ff","name":"Fefi Mera","registered_at":"2026-06-21T00:14:52Z","symbol":"NIM1759745","token_address":"0x97a208e5745b0b927c35ca38e5650502f5b9eab9","type":"artist","uuid":"cf504d49-4131-45f4-8af3-c6dc3454550a"}
album: Limerencia
  type: MusicAlbum
  date published: 2020-04-06
album: Por mis Callejeras
  type: MusicAlbum
  date published: 2021-03-22
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  type: MusicAlbum
  date published: 2021-09-14
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  type: MusicAlbum
  date published: 2022-03-16
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  type: MusicAlbum
  date published: 2023-04-20
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  type: MusicAlbum
  date published: 2023-06-10
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2023-09-30
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  type: MusicAlbum
  date published: 2023-10-31
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2023-12-30
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  type: MusicAlbum
  date published: 2024-02-29
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  type: MusicAlbum
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  type: MusicAlbum
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  type: MusicAlbum
  date published: 2024-05-27
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  type: MusicAlbum
  date published: 2024-06-30
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  type: MusicAlbum
  date published: 2024-11-11
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  type: MusicAlbum
  date published: 2024-12-12
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  type: MusicAlbum
  date published: 2025-01-16
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  type: MusicAlbum
  date published: 2025-03-13
album: Quemando
  type: MusicAlbum
  date published: 2025-08-30
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  type: MusicAlbum
  date published: 2025-09-12
album: Ya No
  type: MusicAlbum
  date published: 2025-10-11
album: Luz y Oscuridad
  type: MusicAlbum
  date published: 2025-11-10
track: Una Brígida

Una Brígida
type: MusicRecording
duration: PT3M17S
duration ms: 197461
explicit: false
by artist: Almeyda
by artist: Fefi Mera
by artist: Diafne Diafne
by artist: La Peluquera
in album: Con Pasión
  type: MusicAlbum
  date published: 2024-05-03
isrc code: QZGLM2427380
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T16:31:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2456ae45d709c8b53cafe422a78a24f6604bf68cb74dcb376b1ad0f9a2344767
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2427380
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 956304
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-02T03:55:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2456ae45d709c8b53cafe422a78a24f6604bf68cb74dcb376b1ad0f9a2344767. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGLM2427380.
  date published: 2026-07-02T05:09:12Z
audio: Una Brígida
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.997
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.844
  additional property: Energy
    type: PropertyValue
    value: 0.709
  additional property: Speechiness
    type: PropertyValue
    value: 0.209
  additional property: Acousticness
    type: PropertyValue
    value: 0.055
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.278
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.824
  additional property: Loudness (dB)
    type: PropertyValue
    value: -13.67
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major