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 0x3e9fc3f6fddc1cb0ad9552bfc63b534f61187d516eeba7dc0170e2318d261af2. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12e5eb02-a79d-44cc-9198-044c6b20a6f6.json and https://artists.proofprofile.net/proofs/artist/12e5eb02-a79d-44cc-9198-044c6b20a6f6.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.
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)
Mozart: Flute Concerto, Six Landler & Symphony 41
Haydn - Cello Concerto No 1, Cello Concerto No 2 and German Dance No 1
Beethoven - 12 Minuets and Symphony No 5
Beethoven & Dittersdorf & Villa: 12 Contre Dances - Symphony Concertante - Harp Concerto
Beethoven: 12 Contre Dances and 12 Minuets (Digitally Remastered)
Music of Barbara Harbach, Vol. 4: Chamber Music II - Strings and Woodwind Quintet4: Chamber Music II - Strings & Woodwind Quintet
Music For The Millions Vol. 36 - G. F. Händel
Music For The Millions Vol. 28 - Georg Friedrich Händel
Organ Concerto, D-Minor, HWV 306, op. 7/4: I. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd545b2edd6b0b9bd6b2d6e60aa062ce0e566a8a91349ee0bec92f93885beac. 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/DEA580600330.
Music For The Millions Vol. 10 - Georg Friedrich Händel
Haydn: German Dance No. 9 in B-Flat Major (Digitally Remastered)
Haydn: German Dance No. 8 in D Major (Digitally Remastered)
Haydn: German Dance No. 7 in G Major (Digitally Remastered)
Haydn: German Dance No. 6 in D Major (Digitally Remastered)
Haydn: German Dance No. 5 in A Major (Digitally Remastered)
Haydn: German Dance No. 4 in C Major (Digitally Remastered)
Haydn: German Dance No. 3 in G Major (Digitally Remastered)
Haydn: German Dance No. 2 in B-Flat Major (Digitally Remastered)
Haydn: German Dance No. 12 in D Major (Digitally Remastered)
Haydn: German Dance No. 11 in F Major (Digitally Remastered)
Haydn: German Dance No. 10 in C Major (Digitally Remastered)
Haydn: German Dance No. 1 in G Major (Digitally Remastered)
Boccherini: Menuet, from String Quintet No. 5 in E Major (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.
Concerto Grosso in A Major, Op. 6, No. 11: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69279c3a34ba6224dbf2ed6f81e3cc55c888da8fc3f7f92551fda3093970f93. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEA580600842.
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