Teodoro Cottrau
type: MusicGroup
description: Teodoro Cottrau (; 7 December 1827 – 30 March 1879) was an Italian composer, lyricist, publisher, journalist and politician.The Book of World-Famous Music: Classical, Popular and Folk -James J. Fuld -
popularity: 15
followers: 225
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb66d4bb1b4b1e766732884f69221fbdcf7d2d8d685bcd0bbc863a1386419a4b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7efda8a7-e7ba-48e7-bc6f-479ab0f4f259.json and https://artists.proofprofile.net/proofs/artist/7efda8a7-e7ba-48e7-bc6f-479ab0f4f259.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T04:47:56Z
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album: Romanze & Canzoni: Vol. 1
  type: MusicAlbum
  date published: 2000-01-01
album: The Master
  type: MusicAlbum
  date published: 2000-01-01
album: The Art Of Beniamino Gigli, Vol. 3
  type: MusicAlbum
  date published: 2000-01-01
  track: Marion Tango
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    duration: PT3M4S
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    by artist: Antonio Cesti
    by artist: Claudio Monteverdi
    by artist: Unknown
    by artist: Pietro Mascagni
    by artist: George Frideric Handel
    by artist: Marcella Puppini
    by artist: Gaetano Donizetti
    by artist: Giacomo Puccini
    by artist: Giuseppe Verdi
    by artist: Arrigo Boito
    by artist: Wolfgang Amadeus Mozart
    by artist: Giuseppe Giordani
    by artist: Gioacchino Angelo
    by artist: Rinaldo Zamboni
    by artist: Teodoro Cottrau
    by artist: Luigi Denza
    by artist: Bernice De Pasquali
    by artist: Frédéric Chopin
    by artist: Dan Caslar
    by artist: Manlio Di Veroli
    by artist: Giuseppe Capolongo
    by artist: Giuseppe Pietri
    by artist: Franz Schubert
    by artist: Luis Rubistein
    by artist: Riccardo Cocciante
    by artist: Marisa Volonnino
    by artist: Valerio Vanuzzi
    by artist: Hans Otto Borgmann
    by artist: Rito Selvaggi
    by artist: Enrico Sivieri
    by artist: Chauncey Olcott
    by artist: Michael William
    by artist: Ethelbert Nevin
    by artist: Fabio Campana
    by artist: Giuseppe De Luca
    by artist: Holgar
    by artist: Odaline de la Martinez
    by artist: Dino Fedri
    by artist: Beniamino Gigli
    by artist: Orchestra Del Teatro Alla Scala, Milano
    by artist: Umberto Berrettoni
    in album: The Art Of Beniamino Gigli, Vol. 3
      type: MusicAlbum
      date published: 2000-01-01
    popularity: 1
    isrc code: GBLGL0968123
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    additional property: OTSVerifyInstructions
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      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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad67504b20570b9dfff4805d272a160a0542c9cb96d9947f79d4523d6d35102a. 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/GBLGL0968123.
      date published: 2026-07-08T03:22:41Z
    audio: Marion Tango
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      additional property: Tempo (BPM)
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        value: 125.845
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        value: 7
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      additional property: Danceability
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      additional property: Acousticness
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      additional property: Valence (Positivity)
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      additional property: Loudness (dB)
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album: The Art Of Beniamino Gigli, Vol. 2 1947-1955
  type: MusicAlbum
  date published: 2000-01-01
album: 8 Arias & 8 Songs
  type: MusicAlbum
  date published: 2000-01-01
album: Beniamino Gigli: Vol. 2
  type: MusicAlbum
  date published: 2000-01-01
track: Santa Lucia
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  by artist: Teodoro Cottrau
  by artist: Roberto Alagna
  by artist: Yvan Cassar
  by artist: Orchestre national d'île-de-France
  by artist: Julien Martineau
  in album: Caruso 1873
    type: MusicAlbum
    date published: 2019-11-08
  popularity: 6
  isrc code: USSM11909119
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Santa Lucia
track: Fenesta che lucive

CopyrightRegisteredAt
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USSM11909119

OTSTimestamp
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value: 2026-07-29T19:35:34Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529efb0ffe8f6fec506d6a73d61fd04899bb2f05a5a339e143ffe9463c975270. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USSM11909119.
date published: 2026-07-29T19:35:34Z

Santa Lucia
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additional property: Tempo (BPM)
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Instrumentalness
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additional property: Valence (Positivity)
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additional property: Key Name
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additional property: Mode Name
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Fenesta che lucive
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duration: PT3M44S
duration ms: 224266
explicit: false
by artist: Teodoro Cottrau
by artist: Enrico Caruso
by artist: Victor Orchestra
in album: Canzoni popolari, Vol. 1
  type: MusicAlbum
  date published: 2011-10-01
popularity: 6
isrc code: DEPJ41100243
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additional property: OTSTimestamp
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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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120d31f61fa7fee1063e98986f326220c67f1295a81339e4c75787cd69b3061d. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/DEPJ41100243.
  date published: 2026-07-30T00:39:11Z
audio: Fenesta che lucive
  type: AudioObject
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