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 0x4c90cfd0f478246c4896e0208864285e40f3dd941f2958d35f1452dc63b5d18b. 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/65e2568e-c041-44e0-abd0-99dbbfd25d5c.json and https://artists.proofprofile.net/proofs/artist/65e2568e-c041-44e0-abd0-99dbbfd25d5c.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 0x0fe6a5b684bb91a362481d663fd8c70e228e8c32a373f10240cfd37be08dc4ae. 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/US3DF2238120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1220cfe06e96b4a4e8247e6549df31b881d977da13cb8ace02c4d199f9d751. 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/QZES71847711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361e3fc68b4b9cf5356055483385ff3b99eefc487eb4d17c752558dc78d89666. 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/USANG2431254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3287de8a5977db9b81f08d6570bd17770661590951e7acc899f18805125b185. 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/USANG2431255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d07d303db176c7953390f0071c06861cbfa468a900f067f241554d0c824e14. 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/USANG2431258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27f29e20dab083c4c339e2778f684504f887b5d503b11be4a3ba0a12229210e. 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/USANG2411648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa6835c9bbad2cbfbe608503c1353d296507c955e006781c1f61c9aa2bdf150. 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/USANG2411651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb227f1b08da0e8bb5cb9644cdaa5be03fd7557195e48ac7e591508bd808191. 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/US3DF2470933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0267493f2919ca27db66c3d76e6facb435bd990aa552359f58319a2039499f9. 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/US3DF2470934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7627ff3f80ae8aca66139c594f6f907b6de26833e52fc1ac1ca5c8ea6e1ca199. 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/US3DF2470935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59131cd7f50fac38cdf56e11bb3baa5fb467d8dfe26796a02819ba3bfa6f40ce. 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/US3DF2449661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662acc350fc859f2825a18097e05f9b98f5f78139e727ec91fdc964b8eb646f1. 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/US3DF2436049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc92cecc37ebeba48d03347334dc53cbc625ac37cd0be4a550ee25a134ec96ee. 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/US3DF2407810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee2a9e50e8849f662779da0ab7b0b1c3e5c9af11fc7a7b311f37a5e8b5928dd. 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/QM3DF2294278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1f9ccf7305ce560d676f59347cf059eae3129cddb766ddf2d8630d821f0e1d. 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/QM3DF2294280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97af7800a91be5069b25b8bcf9516734a2110135c70e155aa214fb0957423471. 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/QM3DF2294281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ac0bfff060e9f8b56f091331cfdf19cbb928b9ff2d7de8d4ef50cf3cf37023. 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/QM3DF2294272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bfdf99a08f6f4060a6625d76615417fb014ed6412d604185e17f7e8765e776. 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/QM3DF2294273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82cdb4d44e80dd8b053a331f8f4cb705da8a79ff2e16da78d3fdff953202abd7. 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/QZMEN2547115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42d7456e21b9cd62e270918a1b75a4e017d050e8f2021092cd285f8b4ca7ad0. 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/QZMEN2547116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9323bcddbd6d90f63aea87d2f1d0f759f891ce505b239b8208a0accecab788. 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/QZMEN2547117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86174d854f38a70a3a8d5d15eee3408272bfcd8a4a4e7dd637842370d8c86c44. 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/QZMEN2547118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad102cfa7c829b306a026df32abd9dfa7d32b63985d13b17142a231e6739387. 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/QZMEN2547119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeebbacfc1728a82d2d25ced3d4cabafc4ae2f8977d05b2b671028b6204eb6ed. 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/US3DF2512499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a110f089c8fcfe11945e4190ab4fde0a6d44c8193c4e3654ca7c8e6f528d7d. 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/US3DF2512500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed7041003dc367986030e8d9ffe5eb360046ab3e07dc6cdf3a7c08fc6c7913b. 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/US3DF2512502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b69f7f396db4365e6740300284f313bdbae4eeef1393bb17438eb34cd24f748. 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/US3DF2512503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3f4be46feb8c41d6319850d957c7b53d5eb134284814446cbbe15de3f614ad. 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/US3DF2500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd3182f8cdf23c576b5133f38092ca8a94e2320c572a8a13279667578f609b. 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/US3DF2500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a72936495c153f176c6f7c2579a3a108bd85ec1558285c69462554e56e527b. 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/US3DF2500569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2705c29f960057bcd805e8e2bdf6d65128cee7add584307ca29ec0bee3b51849. 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/US3DF2500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc612433b511676b07116c8c3c4b99327ee7e75025fecb3bb6e05b4a87eae9f. 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/US3DF2500571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dfea1a843c368fac1da57bac37dc09b578e73a952b727f5a1027c974ba456f. 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/USANG2487615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9094298e1d3205dd503f77f4ea3457ef19bc6ef84a6bd379161ef018a38af67f. 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/USANG2487617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738e5008c8603158a48fb8eaa5f0bd889746c1d8db10ab44305e0cce55737613. 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/USANG2487618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b293c1c79d221cb8732eb4abbb0a51f64aa41aa68d00d4c9ac684ab925ec9d4. 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/USANG2487619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a93a70079122532f8dee99a0f91d58fcd7b04a7e89632aa75f6129d3adbfc. 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/USANG2457930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd749f8de3aa66e43fb70ba615d673b1ba41742e6dcb26fd650aab8370d652d7e. 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/USANG2457931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcb8784987c741d65374042048e67b1fe54fd23f428be88cd3228fb0f522243. 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/USANG2457932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31546b92f795c26614a54ebf6289a417668115a975b0d22eeddef6a3aecfb9f. 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/USANG2457933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb126e1a326c2e29359186d62b0b92c1ba5388e6e7dcedac063287916150bfc. 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/USANG2457934.