Bossa Negra
type: MusicGroup
genre: bossa nova
genre: brazilian jazz
popularity: 16
followers: 710
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-14T11:41:45Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0xb18e2ba750526addfb27e2ffffd727e214bb6ee17c3b37aae24e6218d10b8f47","name":"Bossa Negra","registered_at":"2026-06-14T08:41:35Z","symbol":"NIM0398900","token_address":"0x875f07796f68353bf2d5dca739b91bafece5c741","type":"artist","uuid":"27fb9b2a-6183-43ff-93de-46f37c2b855d"}
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 0xb18e2ba750526addfb27e2ffffd727e214bb6ee17c3b37aae24e6218d10b8f47. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27fb9b2a-6183-43ff-93de-46f37c2b855d.json and https://artists.proofprofile.net/proofs/artist/27fb9b2a-6183-43ff-93de-46f37c2b855d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T11:41:45Z
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album: 夏日森巴 Summer Samba [Single]
  type: MusicAlbum
  date published: 2011-04-05
album: Down Under (Song for the Socceroos Brazil 2014 Fifa World Cup) [Brazil-Bahia Version] (feat. Jacqueline Gawler & William Barton)
  type: MusicAlbum
  date published: 2013-12-04
album: Bossa Negra
  type: MusicAlbum
  date published: 2014-01-01
album: 巴西音樂俱樂部
  type: MusicAlbum
  date published: 2014-01-01
album: Brazilian Essence
  type: MusicAlbum
  date published: 2016-07-29
  track: Happy Ending (Final Feliz) {MPB} [Mandarin]
    type: MusicRecording
    duration: PT4M46S
    duration ms: 286447
    explicit: false
    by artist: Bossa Negra
    in album: Brazilian Essence
      type: MusicAlbum
      date published: 2016-07-29
    genre: bossa nova
    genre: brazilian jazz
    isrc code: HKG291601257
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKG291601257
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dc2cc6191ad93aa242c0518cec4c4d6d42ab82ba57ff05bb4dc4f2cd4d9440. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/HKG291601257.
      date published: 2026-07-04T11:19:20Z
    audio: Happy Ending (Final Feliz) {MPB} [Mandarin]
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.074
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.602
      additional property: Energy
        type: PropertyValue
        value: 0.652
      additional property: Speechiness
        type: PropertyValue
        value: 0.089
      additional property: Acousticness
        type: PropertyValue
        value: 0.62
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.421
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.213
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Taj Mahal {frevo} [Mandarin]
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188239
    explicit: false
    by artist: Bossa Negra
    in album: Brazilian Essence
      type: MusicAlbum
      date published: 2016-07-29
    genre: bossa nova
    genre: brazilian jazz
    isrc code: HKG291601258
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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      type: PropertyValue
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    additional property: OTSVerificationAPI
      type: PropertyValue
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T07:14:39Z
    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 0x3d54fe477e8d8084e257387ad09da5db7b5b40c9315abc43271449262e1dc3ba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HKG291601258.
      date published: 2026-07-19T07:14:39Z
    audio: Taj Mahal {frevo} [Mandarin]
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.899
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.674
      additional property: Energy
        type: PropertyValue
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      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
album: Brazilian Essence (Rio Edition 2016) [English Edition]
album: Harbor

Speechiness
type: PropertyValue
value: 0.095

Acousticness
type: PropertyValue
value: 0.038

Instrumentalness
type: PropertyValue
value: 0.001

Liveness
type: PropertyValue
value: 0.036

Valence (Positivity)
type: PropertyValue
value: 0.865

Loudness (dB)
type: PropertyValue
value: -5.885

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Brazilian Essence (Rio Edition 2016) [English Edition]
type: MusicAlbum
date published: 2016-07-29
track: Upside Down (Flor de lis) feat. Joanna Dong, Jacqueline Gawler {samba, bossa nova}
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  duration: PT3M48S
  duration ms: 228506
  explicit: false
  by artist: Bossa Negra
  in album: Brazilian Essence (Rio Edition 2016) [English Edition]
    type: MusicAlbum
    date published: 2016-07-29
  genre: bossa nova
  genre: brazilian jazz
  isrc code: HKG291601269
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T10:18:42+00:00
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  additional property: OTSHash
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    value: 957851
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T11:26:33Z
  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 0x83855a35dc1ee5a2fae067e50c5986cdee33a025ceac239bfc2ec51c116e95f3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/HKG291601269.
    date published: 2026-07-13T11:26:33Z
  audio: Upside Down (Flor de lis) feat. Joanna Dong, Jacqueline Gawler {samba, bossa nova}
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 176.105
    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: 0.671
    additional property: Energy
      type: PropertyValue
      value: 0.697
    additional property: Speechiness
      type: PropertyValue
      value: 0.193
    additional property: Acousticness
      type: PropertyValue
      value: 0.349
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.103
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.567
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.087
    additional property: Key Name
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      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Summer Samba (So Nice) (Samba de Verão) [extended mix] feat. Jacqueline Gawler {bossa nova}
  type: MusicRecording
  duration: PT3M22S
  duration ms: 202302
  explicit: false
  by artist: Bossa Negra
  in album: Brazilian Essence (Rio Edition 2016) [English Edition]
    type: MusicAlbum
    date published: 2016-07-29
  genre: bossa nova
  genre: brazilian jazz
  isrc code: HKUM71400291
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T15:49:22+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd5251f1457efff1ddbe5378eaeb5e28f9441d1bd5d2544e66a3ec766e3934d6d
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 958300
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    type: PropertyValue
    value: https://blockstream.info/api/block-height/958300
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKUM71400291
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T16:14:30Z
  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 0xd5251f1457efff1ddbe5378eaeb5e28f9441d1bd5d2544e66a3ec766e3934d6d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/HKUM71400291.
    date published: 2026-07-16T16:14:30Z
  audio: Summer Samba (So Nice) (Samba de Verão) [extended mix] feat. Jacqueline Gawler {bossa nova}
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
      value: 0.092
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.754
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.876
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
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Harbor
type: MusicAlbum
date published: 2018-09-05