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 0xab436b2a5fb0c28f6500000071c1978ce7bc52a4b8f7bea0acb70a23a4ff190c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/278ba593-fd7b-4223-b0b7-f86d5975d972.json and https://artists.proofprofile.net/proofs/artist/278ba593-fd7b-4223-b0b7-f86d5975d972.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 0x0c4b5431148da6a1274cd35a842c63f20546583009e5f0917dcdef379c8ca132. 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/QM4TW2344547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3ab42d6a2872e4388b08f443e4e23540e7e9852d9ec43592bcb7b21760cf07. 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/QZXLZ2350576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ee4753febb4b9a31b873ef9a082ea9e74e029641195f5fddc8ed713d6a2edf. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/COC012236375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f993032676f5f2190536fe0bf51eac28cfe6d38458aec7fdfb574b5db6b2dd. 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/COC012237263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6811ad0a7bd2f9c0f841d1b87b5232d2ffb573f1f1452a94f27b6f0ea67211. 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/QZZ3N2400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a565d3636b8cb12499ad75accca7a2638e31e39a36a2a65dbc258a3ec33dda2. 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/QZZ3N2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f50cebc15b728651355fd78860ef06f31810923edf1172fb4f73c1689bf7a4. 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/QZZ3N2400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df77b23bc563e4a7c4897cb8b1eea2d266759bb11198f93ab5c05f6dd4920ff. 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/QZZ3N2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069ba3ee566f8670a5502d425770967a5a2add16ae06dd66db798b8d8920028a. 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/QZZ3N2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa414fd001461c3c39996ace74628d3f5b65733445654e1546d28ac9fd85c3. 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/QZZ3N2400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9929c2e981edde634196ad2d492415a7a2b26dfdb3f6f6ccd47a878cfc9d50. 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/QZZ3N2400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46d2f996ca8d40a5edee5f47289c294ca40302500beae27ae1e7f37bfff1dd8. 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/QZZ3N2400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72e5176f8ac6ddc2f928376260cebc3d60914a58d161c0d25045f4ce62cd70a. 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/QZZ3N2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5c5dcbbd2f3ccbe28485864cee74749b348d4a9f1b22f4bb9166e349ce0ce9. 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/QZZ3N2400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d2870e805cd8b9acb9c113935e00fa3e027858587b7079d9700b641b9dfef. 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/QZZ3N2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666d2870e805cd8b9acb9c113935e00fa3e027858587b7079d9700b641b9dfef. 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/QZZ3N2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b259da014fb45b4792ba2f75d959c4a23c40fbf5b502530b31a54643261e20. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/COSO12400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43543be22cdcc9b86709bda645b49801e52cdab7a72df06f3888857b8ccf31ab. 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/COSO12400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0875dc8389fde2617367a8953d0f5eb72b714184ae6e5f3f11112837a1e3f163. 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/QZZ3N2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59949f2103db195ef2e997154b3df285e4882af7b572c5e977d4b2be05677188. 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/QZZ3N2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fecaf2f8769d946280e6c3769eac0d81d2313f7fd785f7ffcaa56662147b6a4. 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/QZSYP2305870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35846cf360365992b7320239d0fbafe7babb278ea13a94de84ebf2fab33d98d. 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/QZZ3N2400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ed9ed8c448a4bf592d6a5e51620fa8920cba31ebefa67e92012725b7135cae. 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/QZZ3N2400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95911a1422039c982711f2daa1c72b81867470f374789c2b5850aa4640d54687. 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/QZZ3N2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206514e0c6c56ac641116164ce991e2002f6e50c6df7a1a428a9796b9dc3cacc. 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/QZTLA2393948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279000560355ee415f9631bdd1cef18b292177d31a46efebf5eaa9364be53d91. 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/QZZ3N2400055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8264bd8c4b1eaa08871e10189c831d2b2f9bac589e18ef3fd103258e8bf359. 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/QZZ3N2400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb78b0cfaf58c222c57d1ebeb9d28d12dfa7462c69466852c939f9daeb236e29. 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/QT28M2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435dceddd2ce0fc0f3e571f1a0d07207a83c9370490657c9493b53f59c042237. 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/COSO12400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f965b8989d30756d4d739d73a92359996180603253c51aff96d4e1be11c44c0. 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/QM4TW2536825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2b5f23f5bf3287c25808140577169798a7847e9e90bee88c1ba0cb48ebdd22. 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/COSO12400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd268762a095585e2b03afe9c8c826ef723aaeb5a0265f50fb7189eafd46f8ac9. 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/COSO12500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4174fb54c171b6638f3cfaa8029e3d2821daec600cce953f61b3f063e8af72. 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/COSO12400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b259da014fb45b4792ba2f75d959c4a23c40fbf5b502530b31a54643261e20. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/COSO12400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe08ff846c33afb8e28fa89c73c04b4907efe37c3333e299c6aa96e131e80884. 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/COSO12400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2b5f23f5bf3287c25808140577169798a7847e9e90bee88c1ba0cb48ebdd22. 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/COSO12400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399748de38b10e9cb1bd3a60b5b5203a2b76bce3214ba6e8dd33d32536e37848. 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/COSO12400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435dceddd2ce0fc0f3e571f1a0d07207a83c9370490657c9493b53f59c042237. 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/COSO12400138.