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 0xe9e6a2c107768f7ffb0f4378bfb6a97f643260199a70fb05928a3feea42d6355. 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/2baafc5c-b7c5-4643-ba8b-795e7dd4ae94.json and https://artists.proofprofile.net/proofs/artist/2baafc5c-b7c5-4643-ba8b-795e7dd4ae94.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 0x14444d32e7fdc67081a5fa506291b86b1743ab766e33c22895c5576b2752ad93. 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/SEYOK1946746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829170d6145833ca1e90e94a607ab7fd6b0d0b827ba55aee50e8ccc1f8505bcb. 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/SEYOK1946747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109845b4f993f6925608d8c57a8f2291025a1c4c2768ae4afe713a81ed8cdb52. 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/SEYOK1946748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54429b83fe756f19e22f31e83084cbd83ee961a0e4f3e52439205f114ef076f7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEYOK1946749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35409e96d9a2b1248758489a1bcb1e7ca2a30e7c177d661837130288afcd111. 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/SEYOK1946750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a03da8d70f9353fbf31532b10e18eb667b26f322e0847121cf995476010eac. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:59Z), 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/GX7YM2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22db2f5ab5eb39d9bf94fc5a6b29b92b7174b7c88a9adf560d820eb4d90f6efc. 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/GX7YM2200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3286d40e8b9206c530f50113325037137efcfcc4dc466163a33feb547e5afa2. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:15:32Z), 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/GX7YM2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d522e75d9a4c263aee000cb4f828b68f3938db32b8f8db96eb55b9e09ef7fd1. 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/GX7YM2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf116a5c2002302a480f10250bd6f0c301b96e1dc10eaf189ff704875d750dae. 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/GX7YM2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f310c713df36e93a60a1860618ca26ef1aad9b212a32bb43842e55b1967f223. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:46:54Z), 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/GX7YM2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6a18a7ad9529775d9e3fca8dcb03da655c40a10b7b9c40485febb27b759092. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GX7YM2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82086a7fbc275d0b41bc5d58088fce4942f5431dcf7d302283a6648e7fdddd7b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:26:50Z), 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/GX7YM2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9f3c4e2366dada83141a08bda2878bcbd46ab63f34825b4f355517e0723a16. 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/GX7YM2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68eb0a80fa13a8f5e11e69e02edd6d26dc853287a851c6ef230f210a1beac1a. 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/GX7YM2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe6a797da11e1eb55f51218411ee376ce88bd678e18204f6c5df66d1c4c35a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:46:31Z), 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/GX7YM2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc70a69a43859981a463410688d7c4c756f2f9dd190e52afcac47714b48b2db7. 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/GX7YM2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58fe5ec824a14a7c1ac8dc2bd912a9231c644643092353726bc6ee423a6b9ba. 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/GX7YM2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c3eb68b7c2e8e8c9cbc4d026fb8a475b55b077c11e8af54a1c0735d389dc99. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:58:48Z), 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/GX7YM2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c3eb68b7c2e8e8c9cbc4d026fb8a475b55b077c11e8af54a1c0735d389dc99. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/GX7YM2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e4f4f88e68bee68145cb930692517bc59c54a182bce3ce264bed8d72a3f03d. 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/GX7YM2200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd3ebe213b2d214abeb8d27e947d8122b77483c9493d198e81b9f66320ab18a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX7YM2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8673480901fd7ff8ad027f9b69b3426694457f349d196467d46a5249282e809. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPJ32280802.