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 0x23badbf1877bf9a868940ce461f2356465b3fcd006f6843a0b10d38314c22c0e. 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/86b65455-8072-4c3f-a1d4-f327aa975cf5.json and https://artists.proofprofile.net/proofs/artist/86b65455-8072-4c3f-a1d4-f327aa975cf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Oboe passion - Arias & concertos by J.S. Bach & sons
Liebster Jesu, mein Verlangen BWV 32: Liebster Jesu, mein Verlangen
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 0x734ab6026ae169e4b4597a0db48eafff1b3408eeea188c73f42d282ca2269a45. 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/NLB151100734.
Wer nur den lieben Gott läßt walten BWV 93: Ich will auf den Herren schaun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaffd739228c98659896d26232569de8537fecccd302a0c99d558e57aab37c86. 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/NLB151100739.
Ich bin vergnügt mit meinem Glücke BWV 84: Ich bin vergnügt mit meinem Glücke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24389175ba38107eb58e77b46ea08bdee292b42aab8cd4812e2bb25f1b432e4a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLB151100732.
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
Concerto in A for Oboe d'amore, Strings and Continuo: (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998dc25e8d9e03b2a20c1dc4d0d1cec25b0debc78f3330a7340cfec3e9553b10. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/NLB151100745.
Ich hatte viel Bekümmernis BWV 21: Seufzer, Tränen, Kummer, Not
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ac90486306c98e6a1e6b0e5a22827b2bc14839b18f2ed1204307ac9fc66417. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLB151100737.
Wer mich liebet, der wird mein Wort halten BWV 74: Komm, komm, mein Herze steht dir offen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a994e08a54081f1cdb74a3ca3783bbd6e937bce4f37873c92d3e63ef80df043. 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/NLB151100741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe5456181b7615a9a44bfe670134a05dbc284f969c2cb76ad6d39a535b4e4e0. 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/NLA460915413.
Concerto for Violin and Oboe in C Minor, BWV 1060R (Version for Two Violins): I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2222fb2d119fa1426820f7ed6cdd18e4551f3fcfce42dbb6ef07eea156932a40. 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/NLA460915417.
Concerto for Violin and Oboe in C Minor, BWV 1060R (Version for Two Violins): III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b630a4b8e7d70c1fa6cfc0f90ec48221c2f037467add757ad163d10bf2eab94. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLA460915419.
Ich hatte viel Bekümmernis, BWV 21, Erster Teil: Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd25e47081af795830474bb7d434a4cc6f921075318a4cb2ad0c035463c670. 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/NLA460915411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b579c309a5464df2a761abdc353196e1833436d2aea3a3941be2743c4dd2e. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/NLA460915412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4218e38733e742adb954a84276392b1d0c05a073da922d2cce33362de26a02b3. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLA460915414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d386a2ad9b16d91515159492551407df531ba66dfa7bee1d1b6bfab1966bf9. 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/NLA460915415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dd7af2a29da59b2cddc2cfa0a436665a7a677f13a97502f298174c9e4ff973. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/NLA460915416.
Concerto for Violin and Oboe in C Minor, BWV 1060R (Version for Two Violins): II. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7d81fa5be79ea79a2db3a758d85e32773653a578351abf1de5102373f86429. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/NLA460915418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc353bcfa466f25b842881ec414a8acda2ebdf7b42ea69c47fc876a9a2d34778f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLA460915420.
Clarinet Concerto in A Major, K. 622: II. Adagio
Mozart: Clarinet Concerto in A Major, K. 622 & Clarinet Quintet in A Major, K. 581
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1d0908ffb9d8915b09ae22f8b3c8e6ece4825ccf08a934090a5e823e6ab075. 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/SEAEM0263020.