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 0x2df68083126f206a71ab3a5280a7fbd633d0b2ba8d4bb2630d91346c07299cd4. 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/b2614244-36c2-4ef8-aa0c-732b19e89810.json and https://artists.proofprofile.net/proofs/artist/b2614244-36c2-4ef8-aa0c-732b19e89810.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 0xb448044fed4acb47a8a1d33b6f6219b47252a6f917968c44fe752e2b950dffcf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6N1903928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd57ec69b39930b0f7af050315f9d1e64df0acd24b27864559c8bc6a64e883d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6N1903927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adad9b92b66742544a90866b2a867fbc9046415bbeddd9a8a73189a4d4e5f4a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZK6N1903925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7fc50424a436e54c67981553a661ac5fa759392dcdef75d31ce82f37d6fa17. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZK6N1903926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48568a2c27cad362f46241708bc41d0e1a1bd82a5a17ab6fbd0f41727a49d2ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4R2243376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb11010b27d1036abba43df125171e736824b07b8001319814a1a8934ce29bd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USL4R2243378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be1fd8bf784c89e65d80e3ee943256b0bf8cd362977d2330b4d9836d8abcc07. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/USL4R2243379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ebf036f054d24e1f1c558143de95c7ee3b0388a2f7000f1adec50b744de459. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4R2243380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa348fab9c8bc5f0cd8e1284ccccc1e04f7a2dbb57a3266d0ac5f1eb48f57c759. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USL4R2243381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe044c84b3d56b5236c4e56c6c3e1548ff91dff0e2359e4fe560a7dfc47f6644. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USL4R2243382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65edeb12a83907766e91551a611dade1318c3b11c45aec4f8ac0137c0a2866af. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4R2243383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ce78f165a9d62b09fbe77e136a1402702151cab02b3337bb260dd41d0a3e45. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USL4R2243384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dd0471a46e68a8089caf6f54608c995e88dedb835f5a89eae23c8804a2ca76. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USL4R2243385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ce4dbf89400df340b2fcd7de9ea556a225f4778297e17e795d2b980d40cae0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USL4R2243386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdde6b481bff87c39cf32b323151d970a0c0f035ef3a406d3fe34600f7cc628. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:48:40Z), 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/USDY42308310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab72ffea3889d2d820c071665d643c945231ae732573745b88043f279ab69e0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDY42308311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4827e175388266b19a050843ed2cf7801c08d961f476efaf441885c9bb97b858. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDY42308314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c44fc9777e0cfd07e237ecbfc688195c7a5facbc26b287978fb68f04707e7ef. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:47:00Z), 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/USL4R2307550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d555e6b7d7b462087e2c5be28a390aa381a7ff6eedb4de4ea6ffa4c03eddcd. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:37:20Z), 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/USL4R2307668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c44fc9777e0cfd07e237ecbfc688195c7a5facbc26b287978fb68f04707e7ef. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4R2307550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe36cfaee594b0f68830b63a6c0feca7dd0dcfe0cb16e109e95285afc2e8205. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:46:18Z), 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/USCGH2407806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d555e6b7d7b462087e2c5be28a390aa381a7ff6eedb4de4ea6ffa4c03eddcd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:25Z), 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/USL4R2307668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d654d4cf2f5cb6bcfcce72162869f2c53f4f1c075fbdf5c2bf9731b591eab31. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:12:24Z), 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/USL4Q2340703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5da1af5c1341b33182db59464991002e97147a8949179cdd133db63afa6df6. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/USCGH2407809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a191111b202407d858a042442a3fe730a70c14d09773593d60bb1be3503564. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM82409215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d337194bf95aa2f97a508f449224f89841d039d68773a251ae4e2dae56d11fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZJG52170635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8630a829bfdf6c77fe96aec60d57d04d37a762592ff54d7c4ad96f9d7c170ba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZJG52155792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61ce29ac3adc5eac3d72e474c29910fec527ef85568077910acc5bf18239021. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZJG52156644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aba2d68777925bdd952e29a09cd5a66a1be706cf667d784a9c1c1b462cb002e. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZJG52156647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429aba03129a1c50bd62620202dd4125353a66e3a6ba537283266b4ba8c3578e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:20Z), 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/QZNMX2131260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d2b957235504a0da8cb71e747389e6ded865b1f8edd4d8504191b7691c27ab. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:17Z), 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/QZJG52156675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344e9025b439bab63f841c50c690f5e99132ddf3be554c8314d3d18da70ef39b. 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/QZJG52156684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92563ea2e3356d77a39485de8bc62940a3f63828bed2d6120dea8c54d057c61e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:07:44Z), 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/QZJG52156688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab39480eac78cf238d58e237855dc15591471781122330aa48c56b23be1ba79. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZJG52156699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eee51ab5ad5623ba6221b573b30cfcd262b1c2fe83bf5c56169b6f42ea7580. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZJG52195570.