hernani almeida
type: MusicGroup
description: Hernani Almeida (born 7 April 1978 in Sao Vicente, Cape Verde) is a Cape Verdean musician. In 1994 he formed his first rock band named what and has records and produced many albums. He was named Best
popularity: 8
followers: 491
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b8db321cd75d763cfb3a9b3b86f16d8a72193415dfe305e38f2c189e3f34e76
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/d2f74429-b27f-4025-8575-7b164f4d42eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d2f74429-b27f-4025-8575-7b164f4d42eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d2f74429-b27f-4025-8575-7b164f4d42eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T02:46:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9b8db321cd75d763cfb3a9b3b86f16d8a72193415dfe305e38f2c189e3f34e76","name":"hernani almeida","registered_at":"2026-06-21T01:31:12Z","symbol":"NIM1778099","token_address":"0x8ca380d16b61cc7689707bc03bce7febf855a469","type":"artist","uuid":"d2f74429-b27f-4025-8575-7b164f4d42eb"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8db321cd75d763cfb3a9b3b86f16d8a72193415dfe305e38f2c189e3f34e76. 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/d2f74429-b27f-4025-8575-7b164f4d42eb.json and https://artists.proofprofile.net/proofs/artist/d2f74429-b27f-4025-8575-7b164f4d42eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T02:46:24Z
  text: {"copyright_id":"0x9b8db321cd75d763cfb3a9b3b86f16d8a72193415dfe305e38f2c189e3f34e76","name":"hernani almeida","registered_at":"2026-06-21T01:31:12Z","symbol":"NIM1778099","token_address":"0x8ca380d16b61cc7689707bc03bce7febf855a469","type":"artist","uuid":"d2f74429-b27f-4025-8575-7b164f4d42eb"}
album: Caalma
  type: MusicAlbum
  date published: 2010-09-01
album: Afronamim
  type: MusicAlbum
  date published: 2022-12-30
track: Calçadas
  type: MusicRecording
  duration: PT3M7S
  duration ms: 187213
  explicit: false
  by artist: Luis Peixoto
  by artist: Germán López
  by artist: hernani almeida
  in album: Geodesia
    type: MusicAlbum
    date published: 2021-03-05
  genre: celtic
  isrc code: PT6IV2000012
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-22T09:10:17+00:00
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    value: https://explorer.copyrightchains.com/tx/0xc409a0b8c6164d42ec52e98b876a59d2d3bee2bcd2b94e27cc30f090a5c345f2
  additional property: OTSHash
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  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/PT6IV2000012
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:55:08Z
  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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc409a0b8c6164d42ec52e98b876a59d2d3bee2bcd2b94e27cc30f090a5c345f2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PT6IV2000012.
    date published: 2026-07-02T03:55:08Z
  audio: Calçadas
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
      value: 7
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
      value: 0.346
    additional property: Speechiness
      type: PropertyValue
      value: 0.052
    additional property: Acousticness
      type: PropertyValue
      value: 0.851
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.939
    additional property: Liveness
      type: PropertyValue
      value: 0.108
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.78
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.442
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major