Federação Académica do Porto
type: MusicGroup
popularity: 2
followers: 24
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6e2fbd9b1fbbe54e2238ebc5f3b82a73cd980aba9c8f4a303fe880287081bc39
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6e2fbd9b1fbbe54e2238ebc5f3b82a73cd980aba9c8f4a303fe880287081bc39","name":"Federação Académica do Porto","registered_at":"2026-06-21T06:49:07Z","symbol":"NIM1853231","token_address":"0x874aac1e37b1790602e1796e8f9051eb92fd1788","type":"artist","uuid":"e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca"}
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 0x6e2fbd9b1fbbe54e2238ebc5f3b82a73cd980aba9c8f4a303fe880287081bc39. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca.json and https://artists.proofprofile.net/proofs/artist/e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x6e2fbd9b1fbbe54e2238ebc5f3b82a73cd980aba9c8f4a303fe880287081bc39","name":"Federação Académica do Porto","registered_at":"2026-06-21T06:49:07Z","symbol":"NIM1853231","token_address":"0x874aac1e37b1790602e1796e8f9051eb92fd1788","type":"artist","uuid":"e07c2296-725c-44f6-8b4b-ab5fc2e9e3ca"}
album: Somos Academia!
  type: MusicAlbum
  date published: 2024-08-29
  track: Somos Academia!
    type: MusicRecording
    duration: PT4M37S
    duration ms: 277995
    explicit: false
    by artist: Federação Académica do Porto
    in album: Somos Academia!
      type: MusicAlbum
      date published: 2024-08-29
    isrc code: QZTBB2419484
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T12:31:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xea8a3d57fdb0ca246df078b62a85da9ee2b1a74785a980f3bd2773079b2178a3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 956822
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956822
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBB2419484
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T18:48:28Z
    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 0xea8a3d57fdb0ca246df078b62a85da9ee2b1a74785a980f3bd2773079b2178a3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBB2419484.
      date published: 2026-07-05T18:48:28Z
    audio: Somos Academia!
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 109.985
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.647
      additional property: Energy
        type: PropertyValue
        value: 0.746
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.229
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.31
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.615
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.37
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major