Rome Opera House Chorus
type: MusicGroup
genre: opera
genre: requiem
popularity: 5
followers: 47
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x56ccb3eae03df7c44d5b3aa4a8be8012c2144018f46055b843a3d4d986403045
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953860
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953860
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/035ab54c-8ef5-4279-af67-1701b885bec9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/035ab54c-8ef5-4279-af67-1701b885bec9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/035ab54c-8ef5-4279-af67-1701b885bec9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T23:55:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x56ccb3eae03df7c44d5b3aa4a8be8012c2144018f46055b843a3d4d986403045","name":"Rome Opera House Chorus","registered_at":"2026-06-15T14:42:31Z","symbol":"NIM0740343","token_address":"0xa2db46eaa6923b390418d01b5b325fa6962882b8","type":"artist","uuid":"035ab54c-8ef5-4279-af67-1701b885bec9"}
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 0x56ccb3eae03df7c44d5b3aa4a8be8012c2144018f46055b843a3d4d986403045. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/035ab54c-8ef5-4279-af67-1701b885bec9.json and https://artists.proofprofile.net/proofs/artist/035ab54c-8ef5-4279-af67-1701b885bec9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T23:55:46Z
  text: {"copyright_id":"0x56ccb3eae03df7c44d5b3aa4a8be8012c2144018f46055b843a3d4d986403045","name":"Rome Opera House Chorus","registered_at":"2026-06-15T14:42:31Z","symbol":"NIM0740343","token_address":"0xa2db46eaa6923b390418d01b5b325fa6962882b8","type":"artist","uuid":"035ab54c-8ef5-4279-af67-1701b885bec9"}
album: Rome Opera House Orchestra & Chorus... Highlights from Verdi's La Traviata
  type: MusicAlbum
  date published: 2014-06-13
album: Verdi: Requiem (Stereo Version)
  type: MusicAlbum
  date published: 1961
album: Verdi: Requiem (Mono Version)
  type: MusicAlbum
  date published: 1961
album: Puccini: Turandot
  type: MusicAlbum
  date published: 2009-08-18
album: Puccini: Madama Butterfly
  type: MusicAlbum
  date published: 2000-01-01
album: Puccini: Manon Lescaut (Albanese, Bjorling, Perlea) (1954)
  type: MusicAlbum
  date published: 2006-02-21
album: Verdi: Un Ballo in Maschera
  type: MusicAlbum
  date published: 2000-01-01
album: Opera Concert At The Rome Opera House
  type: MusicAlbum
  date published: 2000-01-01
album: Verdi: La Traviata (1956)
  type: MusicAlbum
  date published: 2015-07-01
album: Verdi: Don Carlo (Christoff, Filippeschi, Gobbi) (1954)
  type: MusicAlbum
  date published: 2006-12-12
album: A Choral Spectacular: The Ultimate Favourite Choirs Collection. Popular, Magical Choral Favourites from 300 Years
  type: MusicAlbum
  date published: 2012-12-02
album: Puccini: Madama Butterfly (Los Angeles, Di Stefano, Gobbi) (1954)
  type: MusicAlbum
  date published: 2008-05-27
album: Puccini, G.: Suor Angelica (Los Angeles, Barbieri, Rome Opera, Serafin) (1957)
  type: MusicAlbum
  date published: 2009-06-30
album: Puccini: La rondine (1961)
  type: MusicAlbum
  date published: 2014-12-01
album: Puccini: Tosca
  type: MusicAlbum
  date published: 2017-02-22
album: Giacomo Puccini: Madama Butterfly (1957)
  type: MusicAlbum
  date published: 2013-03-26
album: Verdi: Rigoletto
  type: MusicAlbum
  date published: 2000-01-01
album: Tosca
  type: MusicAlbum
  date published: 2000-01-01
album: Il Trittico
  type: MusicAlbum
  date published: 2000-01-01
album: The Best of Videogame Classical Music
  type: MusicAlbum
  date published: 2015-04-20
  track: Symphony No. 9 in E Minor, Op. 95, B. 178 "From the New World": IV. Allegro con fuoco - From "Asura's Wrath" on "CyberConnect2"
    type: MusicRecording
    duration: PT10M57S
    duration ms: 657860
    explicit: false
    by artist: Antonín Dvořák
    by artist: Berliner Philharmoniker
    by artist: Herbert von Karajan
    in album: The Best of Videogame Classical Music
      type: MusicAlbum
      date published: 2015-04-20
    genre: classical
    genre: late-romantic-era
    genre: czech-classical
    isrc code: FRS181244634
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-23T08:00:08+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2c8019266fb1ca151bd08194eeb7baafd864671150ae4d8a8fd71725b194a6e7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956304
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS181244634
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0x2c8019266fb1ca151bd08194eeb7baafd864671150ae4d8a8fd71725b194a6e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRS181244634.
      date published: 2026-07-02T03:55:08Z
    audio: Symphony No. 9 in E Minor, Op. 95, B. 178 "From the New World": IV. Allegro con fuoco - From "Asura's Wrath" on "CyberConnect2"
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.625
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.156
      additional property: Energy
        type: PropertyValue
        value: 0.149
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.902
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.893
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.119
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.272
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: The Ultimate Classical Music Collection
  type: MusicAlbum
  date published: 2014-10-23
  track: Adagio in G Minor for Strings and Organ
    type: MusicRecording
    duration: PT8M2S
    duration ms: 482200
    explicit: false
    by artist: Tomaso Albinoni
    by artist: Mayfair Philharmonic Orchestra
    in album: The Ultimate Classical Music Collection
      type: MusicAlbum
      date published: 2014-10-23
    genre: classical
    isrc code: USV351403189
    additional property: CopyrightID
    additional property: CopyrightStatus
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Adagio in G Minor for Strings and Organ
  track: Tritsch-Tratsch-Polka, Op. 214
  track: Carmen Suite: March
  track: Radetzky March, Op. 228
  track: Night on Bald Mountain
  track: La traviata, Act I: Libiamo ne' lieti calici
album: Classical Music You'll Know, Vol. 2
album: Puccini: Madama Butterfly (Gigli, Dal Monte) (1939)
album: Maria Callas Sings Casta Diva
album: Free Your Mind with Classical Music
album: Discover Verdi
album: The Best Classical Music Collection
album: Verdi: Rigoletto (Bjorling, R. Peters, Merrill) (1956)
album: Classical Fireworks Music
album: Celebratory Classical Music
album: Verdi, G.: Simon Boccanegra (Gobbi, Christoff, Los Angeles, Santini) (1957)
album: The Best Classical Music Collection...Ever!
album: Handel: Giulio Cesare
album: 100 Homework Concentration Classics
album: Verdi: Aida (Milanov, Bjorling, Perlea) (1955)
album: Verdi: Requiem (Gigli) (1939)
album: Classical Music for New Years Eve
album: Verdi: Ballo in Maschera (Un) (Gigli, Caniglia) (1943)
album: Puccini, G.: Tabarro (Il) (Gobbi, Mas, Prandelli) (1955)
album: Operatic Duets with Robert Merrill

La traviata, Act I: Libiamo ne' lieti calici
type: MusicRecording
duration: PT2M56S
duration ms: 176746
explicit: false
by artist: Giuseppe Verdi
by artist: Rome Opera House Chorus
by artist: Fernando Previtali
by artist: Orchestra Del Teatro Dell'Opera Di Roma
in album: The Ultimate Classical Music Collection
  type: MusicAlbum
  date published: 2014-10-23
genre: classical
genre: opera
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d38215b4261141aed477a3863f668dfcd21d48bcc9e82614d0587b4cbbe694. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USV351403188.
  date published: 2026-07-31T12:24:41Z
audio: La traviata, Act I: Libiamo ne' lieti calici
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 120.525
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.385
  additional property: Energy
    type: PropertyValue
    value: 0.238
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.955
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.288
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.36
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.819
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USV351403188
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960397
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T12:24:41+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV351403188
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41+00:00
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

CopyrightID
type: PropertyValue

CopyrightStatus
type: PropertyValue
value: registered

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T16:31:36+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x21bce9ff1867f2345324260318cb7266a14813a720b36d8fd4e106a7183dd509

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 957120

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957120

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV351403189

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:22:41Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bce9ff1867f2345324260318cb7266a14813a720b36d8fd4e106a7183dd509. 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/USV351403189.
date published: 2026-07-08T03:22:41Z

Adagio in G Minor for Strings and Organ
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 93.185
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.082
additional property: Energy
  type: PropertyValue
  value: 0.104
additional property: Speechiness
  type: PropertyValue
  value: 0.042
additional property: Acousticness
  type: PropertyValue
  value: 0.447
additional property: Instrumentalness
  type: PropertyValue
  value: 0.764
additional property: Liveness
  type: PropertyValue
  value: 0.144
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.043
additional property: Loudness (dB)
  type: PropertyValue
  value: -24.312
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Minor

Tritsch-Tratsch-Polka, Op. 214
type: MusicRecording
duration: PT2M59S
duration ms: 179666
explicit: false
by artist: Johann Strauss II
by artist: Bulgarian National Radio Symphony Orchestra
by artist: Rouslan Raichev
in album: The Ultimate Classical Music Collection
  type: MusicAlbum
  date published: 2014-10-23
isrc code: USV351403190
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:55:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc4e6adada941177291550167bfbbac0019c246ea61adfc59eb1508b6f36962c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV351403190
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4e6adada941177291550167bfbbac0019c246ea61adfc59eb1508b6f36962c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV351403190.
  date published: 2026-07-08T08:56:20Z
audio: Tritsch-Tratsch-Polka, Op. 214
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.335
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.518
  additional property: Energy
    type: PropertyValue
    value: 0.388
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.507
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.04
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.7
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.853
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Carmen Suite: March
type: MusicRecording
duration: PT4M4S
duration ms: 244040
explicit: false
by artist: Georges Bizet
by artist: London Philharmonic Orchestra
by artist: Reinhard Linz
in album: The Ultimate Classical Music Collection
  type: MusicAlbum
  date published: 2014-10-23
genre: classical
genre: opera
isrc code: USV351403193
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:08:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa4a9799c7830dd4e2e723c98bc6477882ff190a61dadf0ca2bb600415f4e6488
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  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/USV351403193
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a9799c7830dd4e2e723c98bc6477882ff190a61dadf0ca2bb600415f4e6488. 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/USV351403193.
  date published: 2026-07-08T03:22:41Z
audio: Carmen Suite: March
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.586
  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: 0.419
  additional property: Energy
    type: PropertyValue
    value: 0.42
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.925
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.928
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.474
  additional property: Loudness (dB)
    type: PropertyValue
    value: -20.043
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Radetzky March, Op. 228
type: MusicRecording
duration: PT2M56S
duration ms: 176493
explicit: false
by artist: Johann Strauss II
by artist: Wiener Philharmoniker
by artist: Hans Kappertsbusch
in album: The Ultimate Classical Music Collection
  type: MusicAlbum
  date published: 2014-10-23
isrc code: USV351403196
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T14:32:00+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x55a5f53ca4e29fcefc1c3d9dd0c07ba88a5d694bbff757adcd821152d666bb75
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  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/USV351403196
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a5f53ca4e29fcefc1c3d9dd0c07ba88a5d694bbff757adcd821152d666bb75. 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/USV351403196.
  date published: 2026-07-08T03:22:41Z
audio: Radetzky March, Op. 228
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.303
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.584
  additional property: Energy
    type: PropertyValue
    value: 0.604
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.714
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.584
  additional property: Liveness
    type: PropertyValue
    value: 0.271
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.59
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.067
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Night on Bald Mountain
type: MusicRecording
duration: PT11M12S
duration ms: 672133
explicit: false
by artist: Modest Mussorgsky
by artist: Mayfair Philharmonic Orchestra
in album: The Ultimate Classical Music Collection
  type: MusicAlbum
  date published: 2014-10-23
genre: classical
genre: late-romantic-era
genre: early-modern-classical
genre: russian-romanticism
isrc code: USV351403217
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:52:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3134630fe800ae360281fa004f2c7b6eec9b3c717ebc4e7b36698e63e9e5801b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  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/USV351403217
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3134630fe800ae360281fa004f2c7b6eec9b3c717ebc4e7b36698e63e9e5801b. 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/USV351403217.
  date published: 2026-07-08T03:22:41Z
audio: Night on Bald Mountain
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 111.314
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.231
  additional property: Energy
    type: PropertyValue
    value: 0.193
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.765
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.633
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.072
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.901
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Classical Music You'll Know, Vol. 2
type: MusicAlbum
date published: 2014-10-23
track: Carmen Suite: March
  type: MusicRecording
  duration: PT4M4S
  duration ms: 244040
  explicit: false
  by artist: Georges Bizet
  by artist: London Philharmonic Orchestra
  by artist: Reinhard Linz
  in album: Classical Music You'll Know, Vol. 2
    type: MusicAlbum
    date published: 2014-10-23
  genre: classical
  genre: opera
  isrc code: USV291499636
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T07:52:11+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7c585d231e0606cc28ddea705884a6d1baa0e993aae085fa7186916089ed3aa4
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USV291499636
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c585d231e0606cc28ddea705884a6d1baa0e993aae085fa7186916089ed3aa4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USV291499636.
    date published: 2026-07-08T08:56:20Z
  audio: Carmen Suite: March
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 130.586
    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: 0.419
    additional property: Energy
      type: PropertyValue
      value: 0.42
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.925
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.928
    additional property: Liveness
      type: PropertyValue
      value: 0.093
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.474
    additional property: Loudness (dB)
      type: PropertyValue
      value: -20.043
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
  type: MusicRecording
  duration: PT2M40S
  duration ms: 160640
  explicit: false
  by artist: Johann Sebastian Bach
  by artist: Robert Cohen
  in album: Classical Music You'll Know, Vol. 2
    type: MusicAlbum
    date published: 2014-10-23
  genre: classical
  genre: classical-piano
  isrc code: USV291499644
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:08:23+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x58710d51cbe02e4be2d7064272c3e31a2bee941d1dd0563cee2450415beddd48
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957120
  additional property: OTSBitcoinBlockVerifyURL
    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/USV291499644
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58710d51cbe02e4be2d7064272c3e31a2bee941d1dd0563cee2450415beddd48. 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/USV291499644.
    date published: 2026-07-08T03:22:41Z
  audio: Cello Suite No. 1 in G Major, BWV 1007: I. Prelude
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 149.225
    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: 0.307
    additional property: Energy
      type: PropertyValue
      value: 0.134
    additional property: Speechiness
      type: PropertyValue
      value: 0.076
    additional property: Acousticness
      type: PropertyValue
      value: 0.969
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.885
    additional property: Liveness
      type: PropertyValue
      value: 0.099
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.302
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.907
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major

Puccini: Madama Butterfly (Gigli, Dal Monte) (1939)
type: MusicAlbum
date published: 2002-04-16

Maria Callas Sings Casta Diva
type: MusicAlbum
date published: 2012-08-07

Free Your Mind with Classical Music
type: MusicAlbum
date published: 2014-11-01
track: Rhapsody in Blue
  type: MusicRecording
  duration: PT14M42S
  duration ms: 882493
  explicit: false
  by artist: George Gershwin
  by artist: Mayfair Philharmonic Orchestra
  in album: Free Your Mind with Classical Music
    type: MusicAlbum
    date published: 2014-11-01
  isrc code: QMFMG1420276
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T16:36:57+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x7ece8719149acfb4e754c238b58d8f0db331d14d73f4de72156d4ef5259fa2c6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957145
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957145
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMG1420276
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ece8719149acfb4e754c238b58d8f0db331d14d73f4de72156d4ef5259fa2c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFMG1420276.
    date published: 2026-07-08T08:56:20Z
  audio: Rhapsody in Blue
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 126.703
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.4
    additional property: Energy
      type: PropertyValue
      value: 0.25
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.967
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.893
    additional property: Liveness
      type: PropertyValue
      value: 0.087
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.122
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.441
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

Discover Verdi
type: MusicAlbum
date published: 2014-09-27

The Best Classical Music Collection
type: MusicAlbum
date published: 2014-11-22

Verdi: Rigoletto (Bjorling, R. Peters, Merrill) (1956)
type: MusicAlbum
date published: 2008-06-24

Classical Fireworks Music
type: MusicAlbum
date published: 2014-11-05

Celebratory Classical Music
type: MusicAlbum
date published: 2014-11-29

Verdi, G.: Simon Boccanegra (Gobbi, Christoff, Los Angeles, Santini) (1957)
type: MusicAlbum
date published: 2009-02-24

The Best Classical Music Collection...Ever!
type: MusicAlbum
date published: 2014-11-18

Handel: Giulio Cesare
type: MusicAlbum
date published: 2015-09-01

100 Homework Concentration Classics
type: MusicAlbum
date published: 2014-08-16

Verdi: Aida (Milanov, Bjorling, Perlea) (1955)
type: MusicAlbum
date published: 2006-06-20

Verdi: Requiem (Gigli) (1939)
type: MusicAlbum
date published: 2001-10-18

Classical Music for New Years Eve
type: MusicAlbum
date published: 2014-12-30

Verdi: Ballo in Maschera (Un) (Gigli, Caniglia) (1943)
type: MusicAlbum
date published: 2002-02-11

Puccini, G.: Tabarro (Il) (Gobbi, Mas, Prandelli) (1955)
type: MusicAlbum
date published: 2008-08-26

Operatic Duets with Robert Merrill
type: MusicAlbum
date published: 2000-01-01