Fê Smania
type: MusicGroup
genre: surf rock
popularity: 5
followers: 1456
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb9836c345693cb0ad879cefc8d96a15f96696efac909dd1afcce30fe6575dd0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a5fe54c-72fe-443b-938e-5408c0d84983.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5a5fe54c-72fe-443b-938e-5408c0d84983.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5a5fe54c-72fe-443b-938e-5408c0d84983
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbb9836c345693cb0ad879cefc8d96a15f96696efac909dd1afcce30fe6575dd0","name":"Fê Smania","registered_at":"2026-06-16T21:03:16Z","symbol":"NIM1174910","token_address":"0xe242e67183420763d34453aca7878d40383d07df","type":"artist","uuid":"5a5fe54c-72fe-443b-938e-5408c0d84983"}
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 0xbb9836c345693cb0ad879cefc8d96a15f96696efac909dd1afcce30fe6575dd0. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a5fe54c-72fe-443b-938e-5408c0d84983.json and https://artists.proofprofile.net/proofs/artist/5a5fe54c-72fe-443b-938e-5408c0d84983.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xbb9836c345693cb0ad879cefc8d96a15f96696efac909dd1afcce30fe6575dd0","name":"Fê Smania","registered_at":"2026-06-16T21:03:16Z","symbol":"NIM1174910","token_address":"0xe242e67183420763d34453aca7878d40383d07df","type":"artist","uuid":"5a5fe54c-72fe-443b-938e-5408c0d84983"}
album: Midnight Calls
  type: MusicAlbum
  date published: 2018-10-08
album: Coffee
  type: MusicAlbum
  date published: 2018-12-17
  track: Coffee
    type: MusicRecording
    duration: PT2M59S
    duration ms: 179940
    explicit: false
    by artist: Fê Smania
    in album: Coffee
      type: MusicAlbum
      date published: 2018-12-17
    genre: surf rock
    isrc code: US7VG1871547
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T19:43:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6b510263954f9d21ca8229e111e7f56c1a526e83c4b9677d3342ed5bb729bd70
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1871547
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 0x6b510263954f9d21ca8229e111e7f56c1a526e83c4b9677d3342ed5bb729bd70. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US7VG1871547.
      date published: 2026-07-06T01:25:57Z
    audio: Coffee
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 119.9
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.744
      additional property: Energy
        type: PropertyValue
        value: 0.463
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.387
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.087
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.798
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.729
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: I Wrote Songs for You
  type: MusicAlbum
  date published: 2019-06-28
album: As Voltas Que a Vida Dá
  type: MusicAlbum
  date published: 2021-01-08
album: Libriana
  type: MusicAlbum
  date published: 2022-02-11
album: UNILATERAL
  type: MusicAlbum
  date published: 2023-03-03
album: Silêncio
  type: MusicAlbum
  date published: 2023-08-29
album: odeio (burra!!)
  type: MusicAlbum
  date published: 2024-04-30
album: Ex-Amigo (Acústico)
  type: MusicAlbum
  date published: 2024-10-29
album: Presságio
  type: MusicAlbum
  date published: 2025-09-26
  track: Pra Que Ir?
    type: MusicRecording
    duration: PT3M17S
    duration ms: 197000
    explicit: false
    by artist: Fê Smania
    in album: Presságio
      type: MusicAlbum
      date published: 2025-09-26
    genre: surf rock
    isrc code: BKYEW2500009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T11:10:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd8a654af0df69c0d08a23112227698042eee7ea2dd2098d027f6549fa5685689
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      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/BKYEW2500009
    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 0xd8a654af0df69c0d08a23112227698042eee7ea2dd2098d027f6549fa5685689. 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/BKYEW2500009.
      date published: 2026-07-05T18:48:28Z
    audio: Pra Que Ir?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 93.16
      additional property: Musical Key
        type: PropertyValue
        value: 3
      additional property: Mode (Major/Minor)
      additional property: Time Signature
      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

Mode (Major/Minor)
type: PropertyValue
value: 1

Time Signature
type: PropertyValue
value: 5

Danceability
type: PropertyValue
value: 0.476

Energy
type: PropertyValue
value: 0.271

Speechiness
type: PropertyValue
value: 0.034

Acousticness
type: PropertyValue
value: 0.895

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.117

Valence (Positivity)
type: PropertyValue
value: 0.365

Loudness (dB)
type: PropertyValue
value: -8.336

Key Name
type: PropertyValue
value: Eb

Mode Name
type: PropertyValue
value: Major