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 0xbfcacc27d1d58753ca7b7d862b10f92d6a68a1adaae08b79cf609af9af6739cb. 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/e36df64e-43d4-4a14-bb7a-29630691c2f9.json and https://artists.proofprofile.net/proofs/artist/e36df64e-43d4-4a14-bb7a-29630691c2f9.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 0xc066923c62cd7d6487d4048bbee463ac29edd8d816e8034462c92ed906a50c80. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ES71G1772731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d83428ad2e7a2bb35ef253bfaf5ea0be81a537524bd395807e4b0aa74a66e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G1903587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddbac1b121cdc63ad6fe9216fc25f20367b31edb5f3345ee4fd4603184bcf6d. 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/PT9GN2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a792effca09a3baabb27cea0e77620ec5ac9b4a6d305a1b0d08f3df36ecaccc. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/PT2DY2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc118446a901ed8772505b06815b6966ed5523848572c898d8f797d83bdc04622. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/PT7RR2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abbc8df202906af0c57e29529b2d8f590960c4d7b54739a6f151f5c030ef3d. 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/PT7RR2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39af86439b9c5376774a578b29c363890c55d749669d185dc11f364be505ef0. 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/PT7RR2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb0d45b9e469fa65f4f986605c85bd1f0db366800791b2170d441d14c11cbd. 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/PT7RR2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78019c0d50e38f4bd142fc52fe09c0a048929cd2b8d2145ca0b274e3e9f9946c. 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/PT7RR2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a41aef22c5eea0e648643adbd67b23428db11fe24260cd89cf818c63ad8f3. 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/PT7RR2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acc4740e18f26468cabbfc183409ba444f1131deb99783dad414b029560b8e6. 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/PT7RR2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3c60c084116f60fcbce0ac8a62d1d9b3af5a9db482bdce5ef4d9ddcebc865b. 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/PT7RR2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a2cc0dc0c0fc9b40e54af46efa34ae38efd97efdf35859f0189c8e56b38ccd. 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/PT7RR2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206fb2664751441b02763ec45b3ace8a041f32708dec387dfacc2c773c506c42. 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/PT7RR2300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad159a37977755051132912a4342aeb502ac8e6c9e0b58d334913873fe309c9. 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/PT7RR2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d87259f7eb6fe3a530e6144104d9b2c8c9d71cbe6b3bcebe43b5e42fd0d848f. 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/PT7RR2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeabda89fa7c9f366e1da42b8cff240110b27398a3c1efa618ac3c1ec0882a3. 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/PT7RR2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3241058495de270a150f2ecf09f4f8f8fc17f794b9d103b7d9e0f5d54e1651aa. 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/PT7RR2300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd6801078f1c5fc1c27a4774ffaad647300da68f0b26361c11f1e4e15552f11. 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/PT7RR2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a00f0c04ff6742377153b128dd692c2b8964952fc0abdc4fcf6a409fcd87b5. 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/PT9GN2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22051e758ca5e27b234b8b13cfc3a7bbc68eb267f061573fb1fdd6002887bd26. 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/PT7RR2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8abbc8df202906af0c57e29529b2d8f590960c4d7b54739a6f151f5c030ef3d. 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/PT7RR2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x413c9ae0d9e7c78fa3b3ee2cfee138d59ee7c3c2798141f2df9b96918959444b. 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/PT7RR2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a10dc347a706ed45f788750f9a84aee226e666a85e54565fba6eb3a82eae265. 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/PT9GN2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88070329d1d7f876ab6d5c1e9140d8dcec6fa7337515d99538f999aac731d6bc. 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/PT7RR2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686c11dcea678b08c5bd12ed2f46d437e2b80f0af734ca0971e654f171a0e7cc. 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/PT7RR2300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aa9eac98eb937e924698bf2d8f49bc3fc08c41ef45812d3d30b84958557d21. 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/PT7RR2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1e9f5726b3bf553e1308e9493826da85daac9af0b21f561f4ee376b67df2e. 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/PT9GN2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57edbdd9669967dac018f8cc7b09d93c97ab0c85aac4bbbf8a810f863a37e241. 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/PT9GN2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9a41aef22c5eea0e648643adbd67b23428db11fe24260cd89cf818c63ad8f3. 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/PT7RR2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acc4740e18f26468cabbfc183409ba444f1131deb99783dad414b029560b8e6. 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/PT7RR2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88094e533b848e2560f011ec40ef09f0a90b7fedc4027a449235a9a2f3b67710. 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/PT6I22000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c4abb83936abe0c78be26b3dee15bcede237da488142faf8b46d9ce89dd19e. 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/PTVI11900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c4abb83936abe0c78be26b3dee15bcede237da488142faf8b46d9ce89dd19e. 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/PTVI11900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e6c6dc54dac6c2ba118330dd87d0a7baa7a0a31331789401d69d0ce7a5cc1. 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/BRWMB2200919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e6c6dc54dac6c2ba118330dd87d0a7baa7a0a31331789401d69d0ce7a5cc1. 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/BRWMB2200919.