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 0x54d22f4b0a117e93ef96a24968353b737aed2b822c96873e4317815b14e48cbb. 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/6bd4bba6-ee77-4855-ba67-d67bfb7f1667.json and https://artists.proofprofile.net/proofs/artist/6bd4bba6-ee77-4855-ba67-d67bfb7f1667.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 0x013eb7c5f5f7009a6b82b80aa70bcde82ff8bdf9e4713ffed2a1c98a4f772abb. 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/RSA222090926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183fe0bb3e5a687ff26d4aa3aac27a75f9c7c1acbfd60d68513925a53847ff8a. 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/RSA222090925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c1fef735f264de27d036ca5e09eaf1d632e0b82f6a0ce813c9445ffa6a2877. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:49Z), 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/RSA221833039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5129f20a74ac4d2b35c4024d4d49c12d0ad9c51ae3fca7ab01e06e10686bd4e4. 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/RSA221833045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb3df0f6baa9a65d0cf2af28347bf59bd29bd8d2e77d707507b6e0b04074f61. 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/RSA131411701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb523d508305e1db3d78da31880363d65b09325f0259b1e1af465f9bb6310e30e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:17:55Z), 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/RSA221500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db9cd0880ae972aa4e0e566dac670db76ff1b6e650eb7b0c2c9d96655e35684. 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/RSA221500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560247c6972add3829a2d2c57203b7974016070a1e1a786c1b5045a721ee6172. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RSA221500179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373ffc4211e279467fda4563ff084cfbd3fceae0e013f93f2fa6ee35ae365569. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RSA221500180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c382efba3e8a57f00d1d112f7c8e9bb47b0f75f1fbf6f32e2c4ab9473c251e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RSA221500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71374950ff5299e035fca16aa710d78203c4fa52bc1f08cc5725a4a893cd13d. 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/RSA221600304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c26daa3d3ede3e33902b4848105db6e4a43a4f349169aa3af5ebbc945a9bbb7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ATR981167564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ad02c5e48a5c413994a270d271c1561c6b988b4c804bb999b5d86444225c1f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:45:27Z), 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/RSA221600609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d84842b4c94fd8b15f647decd431b99d8f9ab6af08ab50e0d5be34fc460b9bc. 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/RSA221600611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2f742f7d4d33be87c8dc138e24db2c2b61571f8cafc3be2cf27563e3644ce7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RSA221600612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9830eaa8b46395f539bf66854debc01071d618238c792b5f1b39b68c03a513e. 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/RSA221600613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db6c610bbebdc0b0bbc88e6b4bb36e9c1631a6310c1f7a078bc7139efaab2e0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/RSA221600944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4612c5f762bf42befc1e4645951c1b5a86932122c16ffa120e899a43915e822. 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/RSA0G1701726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44df89b65d9c5c0dc1a945cd3c3e5d72fb5f17714fdc74bdbb7e7437f04455d7. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/RSA221820372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9853489aaa1e6058a3b184edf7aff6ecf64c194e0cf732034f286f7adf5e347. 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/RSA221820516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67d2e2b9628f2edae82deb5f81fb89ef8d27feff9bbdbc4b607e03d8d353d66. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/RSA221900247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d112c8741d6c49c4f4705418d85aa81b731e609c03b6208472deccd3fbaa365. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RSA222010133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d5461f7d3bdc959c939fa5517c328e2b11cd8efe035aa495dc35c4a77fae4c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:18:56Z), 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/RSA222305548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefe81aee4085f2391c64135de20ec294cc19bff227e1dbfc2e1516817ab6718. 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/QZTBA2518464.