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 0x78c1ee7fc282491b7e0308834b40eed9f5199d3852b314949fedb7f40d4aaa0a. 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/726229e9-56a8-44e6-b32d-f4c3ac42bd6a.json and https://artists.proofprofile.net/proofs/artist/726229e9-56a8-44e6-b32d-f4c3ac42bd6a.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 0x11f42efffa8cf4c02fba0c8131c8842c5d02f57e8b9b451ffbaa120dec2cf5a8. 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/QZS7J2280327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88633e70bf2bae5028cbc6a2d30b1003cff6cf69ba111e43e659857367c3d4c. 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/QZS7J2263569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9dd457f5db22d9482c2930f087476917345d022a5742e66ff92af4c5345db3. 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/QZS7J2227634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da663b3d8cdc9a5c5af5c7dd6aea41ca6eb9ebe4d7cd31e4fe464929ac38bf6. 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/QZS7J2217771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2525f538dfc04dc103426b2a5bb4019ba71dc28274732d8e169e70573d3200. 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/QZS7J2289554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d616a30a9dcce9ef90b18e8233a10fb1fdbf66acafbd000f0b67fba86655a96. 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/QZS7J2232174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079e6e399d19cfce8aafd8ddd7a39d73e5540430251efcf93dc5f482b9c52692. 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/QZS7J2223649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f86410ea388495bfc5688721bfb31e46d0638b017055600d2e3332934f20f1. 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/QZTLA2286278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ad13672aabd9335ef66811f8b9d5a805c5e2626d550fe8ad4071f6f20139e0. 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/QZTLA2244021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2024147ef5951e88685400a35ca87a2af4b677c426b7fa3428f5349076877c9. 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/QZTLA2224538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b663d618c95af002a57efa50dbf284ab064bf1c5422a8e77bbbd9f671373f0. 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/QZTLA2277743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7e3753086819ff86ea18b069be8e07be6d0c5382482cfe3529742bf7120b4e. 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/QZTLA2211151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163080fe135f192d341f88483294b6d11b3e807addb868fce374c1fe80cc0689. 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/QZTLA2228404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d67a6f7291aacda019575810971ad0db5804d63823b0d92ca2a89e56e897fa. 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/QZTLA2238604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc09a1d2d60931391f51562d0f5a58a995e3bafc54674c51b1bf7375f9ab0b1. 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/QZJPM2100421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa186d8148752f9f2d25bad49c3005be3987122520aef5836e32f54f5f10ab4f. 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/QZJPM2100422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7d24d8b00726c9f438e52fea4c0e90c8b7e1d4b5d514b245702e99bbb2ad4f. 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/QZJPM2100424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08edc92542d0d5a860237cd5b7e360f07fab37ac3007adf3c326f7379739f9e6. 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/QZJPM2000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45837197114dff63148cc7a4bc24bb444fabd0c432da1a7d47c77669b65fb80d. 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/QZJPM1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea2de37130109ef8403f758a3163c4347d16677f6138f90d5286c955e7b3ec0. 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/QZJPM2100425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb39187aa99defe9d54eda571eb426755e71129118246a125e0674e92ff12db. 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/QZJPM2100426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b7d31fd3d6596d7752a5ab4043fb510d16f81cb3932c383b845cf0201faf22. 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/QZJPM2000310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a84644d172861c12792a66d22fad903e2193db11e34a9a8f321513d3b3de47f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZJPM2100428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50561d04bd654ad8e80c93a5bc3e3eb8a7a1e1b1eedd16e7172a48dea0959a28. 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/QZJPM2100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1695666d34b08982f45658bd2bd534bb746281ff80e8997c7d5fff3cb1797b5f. 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/QZJPM2100431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0c86b6f820b6de832cd633a83843239c38719fb27903a1c110b9fbf3ca535e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZJPM2100435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fbf25d796ec49b3d3165006915f9ecb5317d91d9e968cce3bd1ece778ac02. 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/QZQAY2356651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009868ec535e1bcfaf91fef6d168a400ce7b588c72ae06b5a94e09d15b173b78. 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/QZSYP2108602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaaf5001c6d761a7385d6c1413db1b99d9f3a4b81549947a8a828cf9091b35c. 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/QZSYP2108910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50561d04bd654ad8e80c93a5bc3e3eb8a7a1e1b1eedd16e7172a48dea0959a28. 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/QZJPM2100414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08edc92542d0d5a860237cd5b7e360f07fab37ac3007adf3c326f7379739f9e6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZJPM2000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfd738a118b823cbe2a86cd0f767f67df0d00065dcb915f46eac16333fab084. 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/QZJPM2000205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a724f5cc398793564d2944ced302032f08904991fa9a41c957ed57c9108597. 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/QZJPM2000038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b34be7d7b4ac02de97bf8ba019f53fe995d504c9932e5f9afb71ceca40f60. 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/QZMWW2013526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2d3f5507108c1cb6f0cccabe7305d0bf24aca98188e8bd5274b179328f3a46. 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/QZJPM2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77c6d79a10f6068f62b627607fd757a82ef50a072ae4e0b11c4f77475a7fb12. 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/QZJPM2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7731ec173f7cf6f18b72f47704347766164338ba4e465eb795eed149edb251. 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/QZJPM1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45837197114dff63148cc7a4bc24bb444fabd0c432da1a7d47c77669b65fb80d. 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/QZJPM1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5682de6233c75b582a8ad8b3bd001ade4f33221103e8c11873ccfd3d83c9ce3b. 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/TCADS1875426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e676d9a919c029c5ef9b4e539861bc1e0d5d1c16a7cabf46edd9a09e270729. 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/TCADS1854805.