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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 0xf502bddfddd24a304d8aa3966d0f278604969afffb4a11c83bfed0a1beaf8b4c. 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/8a066f49-e17b-4774-9aaf-9cbdffde9df4.json and https://artists.proofprofile.net/proofs/artist/8a066f49-e17b-4774-9aaf-9cbdffde9df4.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 0xa28ec33d0f1cccb9283f27d2ae159ad24061ccc6cd0ab7a1ba82de64cf080340. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c29bd521d05151c0fe1a0ade5cb7cc47f5329ab070db0d7fee4eed39350f0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3c69c35fbef367d7dd8a5fd027a29a76f5d445df100ad917e79e2484bd1f77. 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/BR5TG2300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2854f2d4d400f2a35c9c917b3f00aa23286543c50b2e3f06dc21c82fa177f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf400a25075a9a921ff69a6bdfff3a03793087c9f95f70403580c44ebe72610. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a185805d9f686f243da7d524940804769d40f01f6c0723be3ed4fdbab772e45. 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/BR5TG2300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe89ddf62fa07011503d47e414b54fd13f550371f72a26453bbdf4e3837c830e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24233afada0793e061801ae32bac2284eefb89440da99bcf0132df794427ef13. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a3dc44eed469a7eb6c81fdbf58a024ed3a2f1b98dc5b7a6470af697651ff0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e252b3f60a158cc03ca6f10710f5c70207025bd2ad7e538ec2ab4d9df7dcd49. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c784fd4368c57b2f3b94b5181cb6027e2e628cb0493d096b3dd2eac5395b45. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c5cb5c96ff5f4070dc2001621a17843767fade09518a07ae7254b959c3b10c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26764fe51092ab3817eb828a7a395d7c5a500decf781fe0b4e28b3dfecb61bb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2419929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f542dd63bbd19c752191ee6847fe5701aa697d5b904a649443ba652de807655. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f262a814a93b9aa20e3ac8fe977c6260d9ffab110739be984769f7d4756e7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1b69739c85aab543c9c0462c8094addaa785d0911b416b909786e9c5491348. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e40b106eed9005a9b78188a301e00414b08576af1b5290c4dc77b732bbe7f8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BR5TG2400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6148ec3d3f5d341ed7a748c6120cbf186abc282a7ea0ec3091fd9987f565a880. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c94a00027b55bed39bf533274eb5a697c9677b28d39e2d0eed0e00b99358a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68345e42f6943d3df4fd44d58b5e1670be3ea12c027b4680d33f619c8bf2059e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f4084204c82c15477ab0f33a5535dcc072e88a5f51f6d8c71ca4c8d7c7b773. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8792834e6f6086292299e912db79399c16913c2817257edb1b4fe0cd2d42f35d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc857e6d63d6fcb01d581c507e84fea441a342eb36649bf83da3bd0f30904ae44. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146887c81e9ee72d3cc953824a4e01be1ccb26e3641e5a646143e32fc83ae070. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c74bc06948e146a490126269761b6e291b3d5a0da205eda3b0114b731ceccee. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927fe26f3b7e0cd23e967d433338c1436b33810a69e1d785e54337c8a1daeef1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BR5TG2400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f46850c7d747c0e46d5b7fd0a0d9bb2776925c89e80810a84fa85434f98bd. 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/BR5TG2400133.