Chico Feitosa
type: MusicGroup
genre: bossa nova
genre: mpb
popularity: 5
followers: 226
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0e5c9ca5db312e233ef0e29c354f1d90abf86fcecee4e68155b9aa51b3d8b2cd
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/60522e5d-218d-4382-bc68-40c00702cc9b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/60522e5d-218d-4382-bc68-40c00702cc9b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/60522e5d-218d-4382-bc68-40c00702cc9b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0e5c9ca5db312e233ef0e29c354f1d90abf86fcecee4e68155b9aa51b3d8b2cd","name":"Chico Feitosa","registered_at":"2026-06-16T23:08:13Z","symbol":"NIM1204710","token_address":"0x716b0e94cabfe27e7d5889f4a62e027fdb5d6489","type":"artist","uuid":"60522e5d-218d-4382-bc68-40c00702cc9b"}
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 0x0e5c9ca5db312e233ef0e29c354f1d90abf86fcecee4e68155b9aa51b3d8b2cd. 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/60522e5d-218d-4382-bc68-40c00702cc9b.json and https://artists.proofprofile.net/proofs/artist/60522e5d-218d-4382-bc68-40c00702cc9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x0e5c9ca5db312e233ef0e29c354f1d90abf86fcecee4e68155b9aa51b3d8b2cd","name":"Chico Feitosa","registered_at":"2026-06-16T23:08:13Z","symbol":"NIM1204710","token_address":"0x716b0e94cabfe27e7d5889f4a62e027fdb5d6489","type":"artist","uuid":"60522e5d-218d-4382-bc68-40c00702cc9b"}
album: Chico Fim De Noite
  type: MusicAlbum
  date published: 1965-07-01
album: Um Banquinho, Um Violão...
  type: MusicAlbum
  date published: 2008-01-01
  track: Fim de Noite
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238561
    explicit: false
    by artist: Chico Feitosa
    in album: Um Banquinho, Um Violão...
      type: MusicAlbum
      date published: 2008-01-01
    genre: bossa nova
    genre: mpb
    isrc code: BRSVN0100136
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T06:12:34+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3bbb9fcfa6ade7dea392a81cc7bb5aa49e25524f301ed1006247e906aa5fd1d7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958682
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958682
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSVN0100136
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T06:17:12Z
    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 0x3bbb9fcfa6ade7dea392a81cc7bb5aa49e25524f301ed1006247e906aa5fd1d7. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/BRSVN0100136.
      date published: 2026-07-19T06:17:12Z
    audio: Fim de Noite
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 93.916
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.672
      additional property: Energy
        type: PropertyValue
        value: 0.173
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.794
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.219
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.386
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
track: Rapaz de Bem
  type: MusicRecording
  duration: PT2M22S
  duration ms: 142800
  explicit: false
  by artist: Chico Feitosa
  by artist: Roberto Menescal
  in album: Bossa Nova, Vol. 2: O Sorriso
    type: MusicAlbum
    date published: 2019-02-01
  isrc code: BRABZ9700048
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:03:44+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdeaffbac465d3ce858a38e7f7f9dafb19a6a0413ed99a017cf8f25cdaea37f56
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRABZ9700048
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0xdeaffbac465d3ce858a38e7f7f9dafb19a6a0413ed99a017cf8f25cdaea37f56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRABZ9700048.
    date published: 2026-07-08T03:20:19Z
  audio: Rapaz de Bem
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 122.198
    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
      value: 0.788
    additional property: Energy
      type: PropertyValue
      value: 0.456
    additional property: Speechiness
      type: PropertyValue
      value: 0.053
    additional property: Acousticness
      type: PropertyValue
      value: 0.766
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.005
    additional property: Liveness
    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
    additional property: Mode Name
track: Conversa de botequim

Liveness
type: PropertyValue
value: 0.088

Valence (Positivity)
type: PropertyValue
value: 0.635

Loudness (dB)
type: PropertyValue
value: -20.154

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major

Conversa de botequim
type: MusicRecording
duration: PT3M11S
duration ms: 191193
explicit: false
by artist: Chico Feitosa
in album: MPB Acústico
  type: MusicAlbum
  date published: 2011-04-20
isrc code: BRSVN0100135
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T20:56:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x44917a651cd8473f64e236f7f793f6613c471bbe13e22caa33759e5f82c02644
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960144
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960144
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRSVN0100135
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47Z
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 0x44917a651cd8473f64e236f7f793f6613c471bbe13e22caa33759e5f82c02644. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BRSVN0100135.
  date published: 2026-07-29T21:09:47Z
audio: Conversa de botequim
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.377
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.698
  additional property: Energy
    type: PropertyValue
    value: 0.381
  additional property: Speechiness
    type: PropertyValue
    value: 0.135
  additional property: Acousticness
    type: PropertyValue
    value: 0.759
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.729
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.093
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major