Mario Bragadini
type: MusicGroup
genre: polka
genre: tango
popularity: 17
followers: 267
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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: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60590897e4c4fcbaff6e39cbd3bbe702d57ff56ff9827dcdeb00a115086b6bbf. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bebadfbd-6f27-43fe-9bc7-0d90ce756c9a.json and https://artists.proofprofile.net/proofs/artist/bebadfbd-6f27-43fe-9bc7-0d90ce756c9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T08:55:24Z
  text: {"copyright_id":"0x60590897e4c4fcbaff6e39cbd3bbe702d57ff56ff9827dcdeb00a115086b6bbf","name":"Mario Bragadini","registered_at":"2026-06-15T00:32:02Z","symbol":"NIM0625637","token_address":"0x2e5281e254ce5e218d919bbf3d42c1c6bb08f667","type":"artist","uuid":"bebadfbd-6f27-43fe-9bc7-0d90ce756c9a"}
album: La stereofisa
  type: MusicAlbum
  date published: 2001-02-01
album: La stereofisa di
  type: MusicAlbum
  date published: 2008
album: Fisarmonica, amore mio
  type: MusicAlbum
  date published: 2008
album: Il gentleman del liscio, vol. 2
  type: MusicAlbum
  date published: 2008
album: Il Gentleman Del Liscio
  type: MusicAlbum
  date published: 2009-12-12
album: Mario Bragadini : Accordionist
  type: MusicAlbum
  date published: 2010
album: La fisarmonica nel mondo
  type: MusicAlbum
  date published: 2010-07-23
album: Mario Bragadini e la sua fisarmonica
  type: MusicAlbum
  date published: 2011-03-18
album: Ciliegi rosa
  type: MusicAlbum
  date published: 2012-03-26
album: I maestri della fisarmonica
  type: MusicAlbum
  date published: 2013-03-04
track: Barcelona
  type: MusicRecording
  duration: PT2M33S
  duration ms: 153773
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  by artist: Gli Assi Della Fisarmonica
  by artist: Louis Ferrari
  by artist: Mario Bragadini
  by artist: Roger Fyor
  by artist: Ray Bells
  by artist: Yves La Roche
  in album: Ballabili celebri: Il musette
    type: MusicAlbum
    date published: 2008
  isrc code: FR6V80831324
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    value: registered
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    value: https://explorer.copyrightchains.com/tx/0x1530c990c41fa77635e7a407f7c5e047faeb03de67b60d78cb90af8bf5e5fd41
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    type: PropertyValue
    value: https://blockstream.info/api/block-height/957120
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V80831324
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:22:41Z
  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 0x1530c990c41fa77635e7a407f7c5e047faeb03de67b60d78cb90af8bf5e5fd41. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6V80831324.
    date published: 2026-07-08T03:22:41Z
  audio: Barcelona
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 138.826
    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
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    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.331
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.785
    additional property: Liveness
      type: PropertyValue
      value: 0.02
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.931
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.957
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Cannes
  type: MusicRecording
  duration: PT2M10S
  duration ms: 130853
  explicit: false
  by artist: Gli Assi Della Fisarmonica
  by artist: Louis Ferrari
  by artist: Mario Bragadini
  by artist: Roger Fyor
  by artist: Ray Bells
  by artist: Yves La Roche
  in album: Ballabili celebri: Il musette
    type: MusicAlbum
    date published: 2008
  isrc code: FR6V80831334
  additional property: CopyrightID
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    type: PropertyValue
    value: registered
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
    type: PropertyValue
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  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
  audio: Cannes

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67821b5f55e9264ffe0499364fd47e56ae57eb27ea1d5adf90f2ab237bf7f7bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6V80831334.
date published: 2026-07-08T03:22:41Z

Cannes
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 187.223
additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
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  value: 0
additional property: Time Signature
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  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.521
additional property: Energy
  type: PropertyValue
  value: 0.35
additional property: Speechiness
  type: PropertyValue
  value: 0.046
additional property: Acousticness
  type: PropertyValue
  value: 0.049
additional property: Instrumentalness
  type: PropertyValue
  value: 0.119
additional property: Liveness
  type: PropertyValue
  value: 0.136
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.908
additional property: Loudness (dB)
  type: PropertyValue
  value: -15.048
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor