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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be7a784028348ef0614fdb92ccddfc3bc658e5bd722e55bcdecd5f9af7a8bd5. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce23dd5c-7007-4a50-a6c0-ad1854eb4bf3.json and https://artists.proofprofile.net/proofs/artist/ce23dd5c-7007-4a50-a6c0-ad1854eb4bf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vivaldi - Tartini - Richter - Pergolesi - Telemann: Flute Concertos
Concerto for Flute and Strings in G Major: I. Allegro non molto
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af2eb7d0e7ff677ce528aa021f58b0016e5ce3cbf71a5fc97e3a026032809ad. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX1793477.
Flute Concerto in F Major, RV 433 "La Tempesta di Mare": III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9ddacdb6d0a29de09cf6504b2580c8aa149aab2a56fcfd5716d525ea7b7fc7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM4TX1793455.
Flute Concerto in G Minor, RV 439 "La Notte": I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8defbf433eb98def5fc11db9e3aec319c7275ca5202a4f5867d5e56dce4a9f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1793456.
Flute Concerto in G Minor, RV 439 "La Notte": II. Presto (Fantasmi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820b48c38a3c70c023bc07d5e8678957085585890ad604cc2aa29337d2d0ed90. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1793457.
Flute Concerto in G Minor, RV 439 "La Notte": III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0716fce33668a6bdcaa1e2476a657080db68c0a13eacc59be2ca13c545130ce7. 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/QM4TX1793458.
Flute Concerto in G Minor, RV 439 "La Notte": IV. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2227093948025bcfe0b9bdf98cc196fc02c76c5cd625fe5767d8a927f2c9480b. 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/QM4TX1793459.
Flute Concerto in G Minor, RV 439 "La Notte": V. Largo (Il sonno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63310106806e45522f0c12b97b89ceda61bd1d2b50ba1a1e106e9d72574fab9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1793460.
Flute Concerto in D Major, RV 428 "Il Gardellino": III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcff8c90e368c3c2ec9bafbf08a8656de6f10ed73aed2b72f877a3c24e05b413. 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/QM4TX1793464.
Flute Concerto in G Major, RV 435: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b369a985332f77e93b5ab54b01fc8979bac5eba57a17c1157b3977c8e140c4. 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/QM4TX1793467.
Flute Concerto in G Major, RV 437: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafe8338884b5ea9724470014125594dc171b296d6c6776d659229f84cc6b175. 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/QM4TX1793471.
Flute Concerto in G Major, RV 437: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa981adb2edbbfc85da13c21527ebdf8061311c068eed2323a6fe0f1e5e6d435c. 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/QM4TX1793473.
Concerto for Flute, Strings and Continuo in C Minor, RV 441: I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d04a2a13131139dfa4fc0ed57c28748c3d72adac4f2cddb3d6b7ec68acb67b. 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/QM4TX1793474.
Concerto for Flute, Strings and Continuo in C Minor, RV 441: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754bcf369f1212a89552e395cf7b3403eb782fc1148b0d4d6641f52fc92df43a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX1793476.
Haydn, Mozart, Beethoven: Dances and Minuets
Grieg: Holberg Suite - Lyric Suite - 2 Melodies - 2 Nordic Melodies - Lyric Piece No. 4
Mozart: Six German Dances for Orchestra in B-Flat Major, K. 606 (Digitally Remastered)
100 Most Relaxing Classical Music In The Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92df1bba7f68e9a93aacaa6f3bf2a168030f80cdcd6f6fdc651773a9485da36. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USSJ10813872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20fbd91f2c9309b6b063c694e4606f7d7884af98d2d45b7dc95edd6b742a2ff. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USSJ10813874.
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
Twelve Contredanses for Orchestra, WoO 14: No. 12, Contredanse - Trio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46b7c530230640ce9796c3a4edd1ba99234bcd7cd9b9c749f94fef6a5131085. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/SEWDL9440291.
String Quintet No. 5 in E Major, Op. 11: III. Minuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ca8861a3d04673a54afd272ce7381f515972f2d7a98d69e5b0b16a34f47deb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEWDL9430582.