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 0xbfb79dded8fc97e6e1294647b9a2b0c660276c1157161a5f8d783df40e7f25b6. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b12d5e0-082e-4a8c-941d-c1171a199723.json and https://artists.proofprofile.net/proofs/artist/3b12d5e0-082e-4a8c-941d-c1171a199723.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xf7772caba16aadc8991dd175141a68da4b79f425f3328dcf05ef3e2fea0d9549. 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/DED990700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb45935aca9daebba632624ecc03e4b7fda055a45565322e10d0b28f9d77807. 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/DED991900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4947ebadc0e57dde398a12ad5734ff7d3eaf61b9839211e10efb4c77afcf203a. 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/DED992300174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05d4397ba3a2aafedc6aa75bb0da36dddbba631009623722147b483490ca81b. 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/DED992300176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e6e1c80090c5bfe28fd031787f4b04b35905f4259d787983b7c7c6ca6a0aa. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/DED992300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda23211c0139941fac7f6cd75722395b22f7a30bdb35bd32da99d0185187e75. 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/DED992300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786745c09f038b4ea6535c9ed6202f0ff26530e454b37769c4200da3bc29a9be. 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/DED992400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9e24a8dc462805a39a7b53ce478efa9fe406e917ac77553969fdece0808bbe. 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/DED992400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af4af4d50e6063c50a90b5ff30cfd7b030fd0a588126412b3c02311be70d08. 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/DED992300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5868e75f5caf57961013ac1a0cdd93402a27828a81387cd479ff6499eb2e94b9. 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/DED992200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2568ebaf509db533485e961312f9e3fb7dd7f15735cabd8d21e9fccd1358d6ab. 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/DED992200070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde881e7556928c0e80510a347417de63a467318a769ece7d2dc2683ab411f6d. 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/DED992200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89adab1bc51d1b9e899b6fcfaac065fbaf0105451e0ca0738987c5d1f37c83f. 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/DED992200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c63d23792e51e1d70e883732453447c68b3c48640afabb8a25f4f245a008a8. 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/DED992200078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0048754a98b3a9b99335b182420e8cc50b25d82ec6586307a78d0ea17a09daa. 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/DED992200079.
Delight Inside - Improvisation on G. Caccini Ave Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e115a51ac5b43063ee4120f5ff3c36c89cd3a6b9ee0916d6ebc087081dff41. 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/DED992100017.
Sinfonia in F Major - Johann Sebastian Bach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4347a573c43fa34800977f778ed9602c6c443a9ec1a2529b97ddaf7155d170d5. 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/DED992100023.
The Wide Point / Improvisation on G.F. Händel: Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae991cdf77fdc7ff5e6bdcaf85ca8e87f5d0420f6ce9931fedd928c89cfff70c. 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/DED992100016.
Our Serenade - Improvisation on F. Schubert: Ständchen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4918bbda0fc00553ad4fd5505c2962bf49253c996e5f288a2ca1fde371515a28. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DED992100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba89d752b81719425d9bf6e00ded07329642c4222283c4237a7b89ce9069578. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DED992100013.
Dreamlike - Improvisation on R. Schumann: Träumerei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f530977a02c6138e2421cb3c7568d03d7166386ae58447dd7d4a9f0ee8b7fea. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DED992100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034be5043a7df5bed086195e49ebf22d28f00670c1aa1dcc38cec813ea41ad09. 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/DED992100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd602dbc9fe98eb0c38e506f7f0a5bfb30779e20b8074de2265f25783bd6392ff. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DED992100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4de981d7c3784db19ca5ad055105c28411ff6e6871df608cff4db4a635eaf60. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:49:53Z), 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/DED992100010.
Let Me Weep / Improvisation on G.F. Händel: Lascia Ch'io Pianga
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d56c935f9d22dea9de1b8beedf8b09f9437c610e15511bd10c7537b87bbd415. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DED992100011.
Walking Far - Improvisation on Marcello / Bach: Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa719149e5d8d3777d7c3eac36f1e06718da976055a08e6d64482d24565977edc. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T17:02:30Z), 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/DED992100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789bc1aadd82225cb324cb9685515948e080a710723b9899a3d0693cca0a3b42. 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/DED990900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda23211c0139941fac7f6cd75722395b22f7a30bdb35bd32da99d0185187e75. 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/DED992300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9e24a8dc462805a39a7b53ce478efa9fe406e917ac77553969fdece0808bbe. 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/DED992400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af4af4d50e6063c50a90b5ff30cfd7b030fd0a588126412b3c02311be70d08. 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/DED992300173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867e6e1c80090c5bfe28fd031787f4b04b35905f4259d787983b7c7c6ca6a0aa. 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/DED992300175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e115a51ac5b43063ee4120f5ff3c36c89cd3a6b9ee0916d6ebc087081dff41. 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/DED992100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4918bbda0fc00553ad4fd5505c2962bf49253c996e5f288a2ca1fde371515a28. 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/DED992100019.
Let Me Weep (Improvisation on G.F. Händel: Lascia Ch'io Pianga)
The Wide Point (Improvisation on G.F. Händel: Larghetto)
Dreamlike (Improvisation on R. Schumann: Träumerei)
Zwischen Raum und Zeit (Klassik, Jazz und persische Poesie)