1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc3786bba594981a725ea61d694ad109d4ee7bb1dad2b8f109556d7b5e59c7e1d. 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/b6ad79d2-2578-4d6b-8e17-32c6dbdf521d.json and https://artists.proofprofile.net/proofs/artist/b6ad79d2-2578-4d6b-8e17-32c6dbdf521d.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 → block OTSBitcoinBlock must exist at that height 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 0x3daca48c31899716bc405f399a05eb213d2647a846780e2ae6f22229d285fd5a. 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/QMANG2220720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf47e8374ded337eb1c2b034f896e1b80f48c2f5ecca0986e514e8e1f4c44edf. 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/QMANG2220719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c7a92f9d6931d1129f3041fa96c3d9789274611584ee19c2db9be56527155d. 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/QMANG2220721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb376f01dee8f2f50af231f2c7a22aae68bdbd8307ffdae0365570065b147d22. 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/QMANG2252707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9894a6c5ba26935dcde2c49cc44c88f92d57fe6772462b175a92c9e800828b4a. 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/QMANG2252708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e46115b9e01f082051fd9c14cc2c6e10d27f114982f2311b9a43257afd079e. 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/QMANG2252709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0944e50308facf69e3c9f956b45509747789322aff1f1da0686bb4fe8ece3b5f. 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/US3DF2427137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327ea962cab2fbe7d1d079297cef2271ddf690f1c7727f31a4f4ab681167fe23. 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/QM3DF2462723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d239c26d39859677c7bcc726e6fa15dbc519bd72ca54b8a96524a305e6d9cc. 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/US3DF2432867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb620b205fcb109e5ac211e68355fdc832e575b945911a69908f16ee2e46bc78. 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/QMANG2416022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f64e80c7d958f0b099667072f199e81eeb6b5cb5e54cca1c20ac2826e7f367a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US3DF2407383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f879e46f6da4aa2c648815d888c184488c10e8f83f8cc690d7e3b49386b2318. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:24:12Z), 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/US3DF2407390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc034ba46e57b573359dbee4bd52620c7be3e0c8605ccbe4e7780fa0d3ef007e2. 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/US3DF2449659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc7f90fdd0ffb869ddbafbbd439a92b0964f2e80ca07f77703a5eb87010120a. 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/US3DF2449660.
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 0x101cf587f84b5a3dd70b54689b11df49af2afd13637442d861f6177bd23ba0c9. 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/US3DF2449662.
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.
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 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 0xbb1a5bdb30ea133cf4a0ae7b4b9da39adb81ef738ab1433e49cac82d667fe70a. 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/US3DF2436050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c6b2393bd52990016fc3d0b1bb68defa247c809ef572e58f6850c6aea1afad. 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/US3DF2436051.