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 0xc70b873247ce6799690a058f2d91ddbfd924a7967a2bb97c3c141904827f4050. 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/5c7fb0f6-ca8a-4ace-b9bd-51e8a8486a8e.json and https://artists.proofprofile.net/proofs/artist/5c7fb0f6-ca8a-4ace-b9bd-51e8a8486a8e.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 0xdcf0b945b9dfd89d597b5dbe2c8133f884719620048915d098f14a041db2a264. 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/QZNMZ2247717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1413ac7acaf859ece4219694a3dc031e3a6ebcd152093dc31068f69b79a186. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNMZ2247722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de046ed9b3084a4c6981d3ca23003969e1d722de4392dd3a67e2c1160fa3b67. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZL382341609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37377fb158c9b229af37269069f7041a4423ed8eec4648c726e06274c5e875e2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWS2331628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d615e0ddb947603c77ccfcd98d9cafa8f90f514493864052a26fc3afb274e62. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZNWS2331632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96c11475a7335648986fc8768fa51769ec8ca075f19e77defcb90c0b3e6870d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:59:55Z), 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/QZNWS2331633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbd747b2364fc3913324a2856fa5fa832555e2511d5261c96e609319935b1d5. 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/QZNWS2331635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0679802b6237409281b0fd4085c1e74b7aad798ffe01e456dc0593a2e3c2b86. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFL2384946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698b42f8be7526190da4581b90f35415cc12dcfb2d225a1207ab94b77b3d3d83. 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/QZFZ42458847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6d20430832ac37b75e0294899641b38f9c20e9ce4b2859a83ef98de8ae8289. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDA82475756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de626223da575f64bfdbceb23036158ef4931fedc7a3cb27700fb2abac7df85. 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/QZDA82475757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17de84238244680a6ed24938b572f0432eb1aafe8c20b8de9c1960e67990e97e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA82475763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18c8d3d229505845697793581cf5a5dfe304356405d6fef1cbe7b5d36c91d9a. 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/USLD91757989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed4c6ff240e1a78e51c9cbcb72d19b9ea7659921d354d8d33db94515a58ddd9. 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/USLD91757992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476918cabbc5482be80aa9577d764c1259e6a8b2adaa0da76b4d9567ba577532. 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/USLD91757993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195097845fb07c16abb9da4f2f77de8b7cb17adbb6289fe8ca5bba62e30caf7d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:19Z), 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/USLD91757996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea0bace0129a784505a48ad5b2880c5ab77862caeb7ee8a0591117febc7d349. 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/USLD91761630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe71ac2dc4a5259c878947bdb718e48889d87726d99ac7c56e1572c1c5f1e0d6. 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/USLD91761631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373f429cc63fb6efb1f49483a36a8be1ade8f7b18820408cd0cd1b57a0e799be. 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/USLD91767047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af9ab23bc7e5031d3b0e63286a94700314bd9d32277a8e31d62cce4b010e418. 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/USLD91767048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c301dbe35e3ef5bb4ad54f95cc91e6f97dc3ccad6b284fcfffb2d39edae61d3. 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/USLD91767049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6d832fcb4349dbb4fc43c13453e4db99dc0a14ccbcd7bd2fc0849e6ab1654f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USLD91767050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40039d3d758d3f977a546ef4e07856c02d504a47b195b0a1614db6392a0b8dd0. 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/USLD91767052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e8ed9976160369b43890df476c58510315660f043cae1839469105c5955978. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USLD91767054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8dee551cc7c9741a7d7e436fdcdf2f1596a397ffe9388a4a0780c9d352e85d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:53:04Z), 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/USLD91767055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2407661b7c679dc01793b9d910e46b30cdfb527c8cebe92e5bf93b96b1d272. 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/USLD91767056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39569c8d25498edd341a4a95764ab84d1773ef8da40d447b67f9721b2935a58. 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/USLD91767057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c90b3573d29c7de28dc54d56714e58872dbe07c824f284853d81288bc4d0195. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:43:43Z), 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/USLD91767058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ebf7635ecb28eade8db03f19b5c893f93bf7cb875287b3610a43bce5c09df4d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USLD91767059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1ceed834c7ea830a4290780468a0332f244d2947f626d9e1621abce9254f00. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:31Z), 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/USLD91767060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fe6dc623cff6d0f3edbccb02182a4174395bbeb363294cb464c58a5e259aef. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USLD91767061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea225e6a66dbac3d34938e9b33b45946abb08252eb820f707ea242a0bac41336. 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/USLD91767062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6912d6aafaa517c0557588906994f59e589e90f4cea53f68c8b38267477b38f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/US3DF2563069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebed30bc2f2b8d2fc0ca3b47f10a6e7a4cba02f5e1aae654e27de223274228fd. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/US3DF2569461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d3618af2a7c9900cc9be5c13bc94ff4e534d772792d8e64246a5168cce45d8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/US3DF2569457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9357c23506e155eb6810687e2ca47a02d65869778a8a1e5ba58d6a2dcef978. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/US3DF2569459.