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 0x97a9496405b2a7d1a34bfc43b10c8f0942ed126f0b048021ddb7ed2015e8efe4. 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/ccd78a66-32b4-4d44-b8b7-e1c87a4dd6fd.json and https://artists.proofprofile.net/proofs/artist/ccd78a66-32b4-4d44-b8b7-e1c87a4dd6fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Suite for Piano & Orchestra (Jazz Suite): I. Snowflakes. Allegro vivace
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 0x2c9fbaa448ddd6f790e993a74d9a6774ef7b2af6b8eb252722d2d413dae9841c. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/US23A1561965.
Suite for Piano & Orchestra (Jazz Suite): II. Lyrical Waltz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91aa1da207d0b91d74de27766712928f8b8f1f565e98d05e73b419618674dd7. 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/US23A1561966.
Suite for Piano & Orchestra (Jazz Suite): III. Polka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3a889263fb7124b70cc41d2acc630a365f08c0c7ba0484a171270226c3c033. 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/US23A1561967.
Suite for Piano & Orchestra (Jazz Suite): IV. Career. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d637ecb7ea47d3f88fde8def40f213bb019b08b692c5bff7efa417ebbdf2357. 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/US23A1561968.
Piano Concerto in G Major, M. 83: II. Adagio assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1391fbacf35069c9a641b25e32d7b605afc1f4125b115d99ec6ade22b469ef6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US23A1561970.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: I. Largamente e cantato
Bach - Busoni: Goldberg Variations & Other Works
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7de6d3f1324cbb3788a2c09bf2b1a225884f7c069d80359b1e9c1995a8e564. 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/GBASH2159801.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: II. Allegro con freschezza, e deciso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74503df6928bf79f322bcee4e2d5d3a35f028a49b7eb0c19ba497b1ee9f79ecc. 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/GBASH2159802.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: III. Andantino, dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5d370adc52df562f27550f746447a1f38d49836772490d754464e79edfbb85. 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/GBASH2159803.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: V. Allegro, non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca3582cc7a3f30f8191e3845c5d5df5dd826513d93a480a7c79835b4d655006. 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/GBASH2159805.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: VI. Allegretto tranquillo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40d42e906bfe453ef41dbc886a0bba7f9922a12c54d4e0156f6af9585b53da0. 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/GBASH2159806.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: VII. Allegro scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83330ab796ab2c50323612b5afd479f54c877b6cae625e259c888a147f9414c1. 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/GBASH2159807.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: VIII. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10da5bb595441074c376702d87af401a53fbc2fcbb0f2d654b7b47ebb92c25de. 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/GBASH2159808.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: IX. Alla breve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e21ef0f26a3e5803a28fe6b9d16b4c213ea49d51febf85fffb33b80b440dbfa. 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/GBASH2159809.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: X. Lostesso tempo, più vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184f506ab6aee329a74954c45cde5a434011b42647596e5ddbef5bee6f972e98. 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/GBASH2159810.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XI. Andante con grazia [ossia]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e735415adc9c3d79aa3541b5d099d628fc1ff94bcf0b5120a905d2b69556c0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBASH2159811.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XII. Allegro ritenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bebdad0367875c5dcea0c64560ba89fdc39a491608907073da24d1e920aaae. 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/GBASH2159812.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XIII. Quasi adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c13777ffb1c5eb74a87e600311cd959c389faf4ec924206df581f4153ade120. 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/GBASH2159813.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XIV. Allegretto piacevole
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc0bafae1444e7f7acc79f0410f5a88b224bf23739222f8fb071bca4702461. 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/GBASH2159814.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XV. Allegretto vivace [Variante des Herausgebers]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d742af8fea4413dc59e736084fb40b1791b43c64d4a190266b5e018fef8840f. 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/GBASH2159815.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XVI. Alla breve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9280e39f9d2fe5e457a16434616e45616e604dd1140b4673d0a438c3d44a9a7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBASH2159816.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XVII. Non Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f212f58777d6442ddc92f414d3f48bdad51a31d4822b31f1de842aa4e75906. 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/GBASH2159817.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XVIII. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfed40c451c33e5b7f4c899fe79a7b33e4544307a113e3ce178304d82365700a. 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/GBASH2159818.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XIX. Allegro corrente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981148d2d03976f5857e1f08481b674ff72e71d3e70463996cd560d69b0c57e9. 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/GBASH2159819.
Goldberg Variations (‘Air with Thirty Variations’), BWV 988: XX. Andante brillante [Version des Herausgebers]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d265ee7d92ca0f3217108dd3ab44254f3379ac26b655557820be26dda1e3f47. 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/GBASH2159820.