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 0xfc6c47dec413ea8d35ba1649f03c12fa029581000fe308e0759230dc69bd21c5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a2f44fa-9f7b-43de-a886-ec4a87afe5cd.json and https://artists.proofprofile.net/proofs/artist/6a2f44fa-9f7b-43de-a886-ec4a87afe5cd.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 0x2e51829d3d8011f2a63ba7fd541d25ae22ac310aacbf6fbaf0d29d3b03e83ee4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADH1771737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98edfa6ae55dda77afd9e2cb8a37821ca895f893a0a0f3921cbe4560f0ede6d6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCADH1771739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29033332e270a4b1b2763553c1cceb9e33e72487192e3b7b48c591a98e9f0db0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCADH1771741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf013cc0b7d73f8c4d828107cc34811dabe1002bc9119edb2036e6cddfaea9174. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCADH1771742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3602926f60fbbeea46a1013838d09db00622df45711c0e2dae6e0fe61e4d6955. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:17Z), 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/TCADH1771743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ad12d3adad25db634f57354d698ca3fe2e18d2f69d693530ebb7463b1ccfe7. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/TCADH1771744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff59e831023ec0416296f0963b0100d0ee34a0e89e07c6d65782399022a7b1b8. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:19Z), 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/TCADH1771751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467bc7a851ebe516dc87b3b54d9963d895afbb0c1dac37a32b5272c667632e5c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZAPG1718658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1649ad900e85522819fbe600466f55c5766192ce298699a93269f192b425be7f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZAPG1718659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfa38f9b8de93707ad92452e261c9f9d5618b17a6cbc6809627321c5b044c62. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZAPG1718660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa379275145a2337c41ef3582ddaaa3b17aa21f81e5b5bb7360dcb82766216ba. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAPG1718661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4579a51a06e6ea5772164560571c59713f8aaada23efffc2c47d6a06a01df0a7. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/QZAPG1718662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c456fc112914e7b2424d129cfd11901353a8e2a91b1ef6dbec58b2d4a046cc1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZAPG1718663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5addc0413c7a938c65d8a0438e7cd8f5a1d79e215b863e7893dc5fe29ff41e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZAPG1718664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca2b6f5bbfbbbe3f16ff68bfac3f1198c4ac9fac2eaf6c3ae293b7933a98e0a. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/QZAPG1718665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952a2d4acef4c7f5b7054554f88bd5cc5931d1de91609f59e7fe31cf18459b1a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZAPG1718666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44efce7b6fdc84fd19d38c515073b5e3142c7cdbcf8fe8b97a5bfdd6b55b629. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZAPG1718667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8113d194b530db5017d1c7ff3848d0596aa4558dc1c3e1e5730c97ae09cbc6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:56Z), 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/SEYOK2301043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577d7655bf1dd54c7c8fbabcf69de6674ef7843bf8be45c10cf852bce29672c8. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:55:52Z), 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/SEYOK2301048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef3ff9461fe3913e259129b68a72a85f259124a39151baf1472115880bfd28. 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/SEYOK2301052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9478d9496b4620b0aa2f127221f9133c301ff58e763cbea985360fb4024ee5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2301056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0bfdf230fddf3dff428a077b3fe0328fedee41265338d2c27a4c8ea9531461. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SEYOK2301060.