thumb Enrico Toselli, Count of Montignoso (March 13, 1883 – January 15, 1926), was an Italian pianist and composer. Born in Florence, he studied piano with Giovanni Sgambati and composition with Gius
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c66d7df2430a6f6706eef1ab804ed4eae08e65cad4d5758254ee83c6a74048. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/281bfcd0-0334-4b33-b1dd-e9d58988b978.json and https://artists.proofprofile.net/proofs/artist/281bfcd0-0334-4b33-b1dd-e9d58988b978.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Toselli: Serenata Rimpianto, Op. 6, No. 1 (Digitally Remastered)
Itzhak Perlman - The Complete Warner Recordings 1980 - 2002
Vintage Hollywood Classics, Vol. 5: Leading Ladies & Partner (Recorded 1928-1940)
Enrico Toselli - Serenade "Nachtigall" op.6 (Piano Cover)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8c40db94a5c56114400136251a30d2982d000c57aa19b67d0ada20e3c1886c. 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/USSJ10800537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af51d148fabae76e13a9926d494238f85ebb32a05215c9caca0b0a6368e645f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USSJ10800544.
An Evening of Classical Favourites, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce924c46a225b0c8c49d1701a8565a34fa26010643e1c29076d650a03321782. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLZJ2170866.
Música para un Embarazo Feliz (Instrumental)
Las Cuatro Estaciones - Invierno - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e75bf72d8a6dda1671b7dae988927bbbcf5fe3f8a7ee878a55eea4f284971a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PEMG90004009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82b346b4e46b14959c5180c191e3dfdd8b399e84cee8cb3b7367b6326bbf302. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4Q0754319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446d78f520bd6864797c1a85ba961a9f9d1c70cdcbf99968f882357c19ab1ae3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLA801330304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f78f946cf0cf2ac235850df28755f44020d8b499cae7cead0c563fd087512c0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEE478300002.
Chamber Music (Salon Music) - Smet, G. / Kjerulf, H. / Winkler, G. / Yradier, S. / Tchaikovksy, P.I. / Kreisler, F. / Morse, T.
Schwarzer Peter: Ach ich hab' in meinem Herzen
Rudolf Schock mit den Schaumburger Märchensängern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5692069cc29405c4e4b9a966d4a1fe2e81671bd8a85bc0a67444322418e063a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEU240824073.
Three Gymnopédies (1888): Gymnopédie No. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28369012cd598bde1078cf8b40f609c43b21f7eaa12773a91470c80bffc31607. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEAEI9777250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d481fea6cf048de89489f707901b06ee358f471e1fa5fb89fd253bbd2bfd82. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR6V82618274.
Voyage Nostalgique: Bizet: Carmen, Habanera "L'amour est un oiseau rebelle" - Fauré: Dolly Suite, Op. 56 - Offenbach: Can Can - Grieg: Anitra's Dance - Adler: Hernandos Hideaway - Mancini: Mo
Stuart Burrows Edition - The Complete Decca Recitals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8baf89446d9027c97935bc0e4b81d35ac5371eefc18874f31954813af701438. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF069807350.
Tristesse, Op. 10 (From "Étude No. 3 in E Major")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c7ce4a8ad21efa840d9eb71ab5af4c894bf90138c1109c2ee79b5bebc8f2f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF069807370.
O mio babbino caro (From the Opera "Gianni Schicchi")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c60ef88373071f844cc94c3c95a1fae3e74da0747cc94e104dcdcb2d8cba1c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEF069807380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb009ee7c02df280579a05f8ef58184018c5130f2c36a4142793a26a40243c988. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEF069807390.
Meine Lippen, sie küssen so heiß (From the Operetta "Giuditta")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9417caddfffc565b0dd7cffe42be45a8f8f9d205fa9a8a76129d45babf3065a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEF069807420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff33378f2f9e37fcda2b9994d7d98fea6a7b9f00bdebe869f426cdcb5b6695b7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF069806290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb897080e3d4291660a4985ab1b611407e23941fe35ad4528fdb8befd5d9f02. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF069807450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1fca68a15491138dc898500d78a1b730fcd3731df1c5a53c1b33676afe2886. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF069807480.
Love Theme (From "Romeo and Juliet") [Reprise]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4758cd7299fa89372dd6d3e42484053472eb318884f0355b87cf16b15cd21e4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEF069806280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492f2bca1521a7c3a0f8875edee4d4456ff3890af0746b93374fd885629f582c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM70501556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5382cae198ffe46bd1220f6de387db94f6556a5496fc8bf3ecc622ba4eefbe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEUM71403269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07abd9791c2c4475ffbd5a475fd32e48b6881905a7cdb230121b18cdb199fdf2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM71403270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087e4e52dcacdbaab58ebd201738dc36eb0ccd6a8cbed49251cf3ecd862f907. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM71403280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4576bca4565e355c2bb94301c2b613a3c290742c7b68584ab82c63f5d3318c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM71403277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08058a625009b1b6c5deb481d11f185aaece5e06e44917bf64bdff910a3d8d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM71403275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68755207455c31c1e2dec2f014829c80484a6ae9aecbe374b775eb4466f37640. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM71403282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e297e3dd8dfb35ccb9daa75b17999245f876081a3735ced64c41904140ee88. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM71403281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076194df9ea4623c6c996b05f481cf036db6d078434393ee06ea71bfff35ddf6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM70501577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bac9919827876a3229d916dd11adc41786c5fb381da08c0f7b230eeb4b3f55. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM70501830.
Mother and Child - Lullabies the Whole World Loves
The Italian-American Immigrant Song (1910-1940), Vol.2