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 0xc4b62cc4c80b48506f8b5138db631231d22c9d76aeb0df181da6755b8a7500ac. 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/affc4ded-a48e-4a9c-811a-f010f515d000.json and https://artists.proofprofile.net/proofs/artist/affc4ded-a48e-4a9c-811a-f010f515d000.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 0xde1513cb3ffed82a7dd317ec440e6a0f2827ea7b91c2c018c6da05446bbf4c2d. 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/QZK6H2315641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524df47da281747d48a248bf36322e85dfb0576bfced45434e1877bf538ed2e2. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:02:48Z), 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/QZK6H2315644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892098afbe5135d1e46e45dbc617ee574d73506f5c0f23fe1c9051d03285a6f6. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:51:34Z), 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/QZK6H2315647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ed02c6af94e94a631ce5f48de0ba7f8ad992e2dcb57348719d17b2b96129b6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6H2315648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baa7c8c0bae01ca8a1c2d40d5a54f900ce741e272fa2c7a88059161e67d11f8. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZK6L2383728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fae6b016489f125f13c80e8e4674ccab17f493fc910a3d725a8c9bfc18021b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:52:47Z), 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/QZK6L2383729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66a890a22b2ad0003eeb6e0e4f3b5f7f075434ea14b40a06d9033169b73f15e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:58Z), 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/QZK6L2383730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87f96e5eb8ef8f0f641e65a9a4bac7f4aef1300bed51e463acc9af9a26be16. 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/QZK6L2383731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf31e639a1173e03940deade6fae45103ea8fb36be6ec150d2405fac0aa960a3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6L2383737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264474de3e2070a7004f612f805adae07e10caa92836ee9154edadb8fa2f9314. 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/QZK6L2395660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68cd602fd19d5dab7ddfadc7b2d6c89a7d0f35a5ffb9a4507073e8b38aa5b55. 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/QZK6L2395661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb75a3aa2f8a4fc81fb63191f76fe1d958cdd99e887b12a23aff0a6db3211225. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6L2395662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbe68f089b5f69e32bae57cb68b84833b8ec8fe4c4f2afef50252c9313f56d8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:54Z), 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/QZK6L2395664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d6f45cd61687d5e1440a4ae4f3db0eff34ee63be1b91a21b773148076e7459. 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/QZK6L2395666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c1363ecfd4618cef0a7374bfa8f6482ff3e63b4415764844ca813d9e9f24db. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:43Z), 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/QZK6K2318633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f11527fb7fd56212a8c7f10b496e55f6300a59d376b654ed2444fa476fc41f5. 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/QZK6K2318634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bce9bfaa63f5205cae60039b2df99421c96158a9251478aa55047f35c38791c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:05Z), 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/QZK6K2318635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145324091ed9ed5d8cefc523785ee2795c0caba051263042860efb1a37b2c936. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:10Z), 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/QZK6K2318636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6386a10519558f854a2b37b35ae223c4c5558d2274cb49aa47dcb2ec7ad6ec8b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6K2318637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d099a92e8d2cb1b89e54d06e081c3a7956912a689bc1905ce6d7e8a92cd817. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZK6K2318640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42df57ac298435435617c303931a5c8896dc1164ad45695c30a7f13750274b5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:45Z), 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/QZK6L2359926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b9240e3468c2994ccbfa3255ef035790a2cfd8575e671978518eee0858e903. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:55:20Z), 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/QZK6L2359929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425a3d6a26020ade926ee34781b909973e2bdc7e7728e7206be0ebfb05412e3. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:38:50Z), 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/QZK6L2359930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40910fe7bbd5ed726409eb64dd98e2a137c000dab30925bdd100198560f145c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZK6L2359931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9631d218bf6b1aafc714509d79e618dacf774a189491ffab4d3c784b676019. 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/QZK6L2359933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc89146e9fbcdc4a70bf3e94319947acc9c53d84c5a12a48a1ae318190765649. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6K2336913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3096d3fa2de0226d72ff12bcbfe8ca76909651a3a6a90ebe56b65b68916140. 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/QZK6K2336916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58aa04d24f80f767aa1fb014672de8fa5a3587af91ffb70339f513c672ed6ae. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZK6K2336919.