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 0x6f3aaeb9b0c552adf8fd5c76481d37321c0707a4e4319269ff45b8aad0941db6. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c16407c8-7d7e-403b-922e-4fd842e1c0f4.json and https://artists.proofprofile.net/proofs/artist/c16407c8-7d7e-403b-922e-4fd842e1c0f4.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 0xd6b31e779d7d8f76c0ad269eaccad0d48d3b84da8d6ada6100653f3f9a6c9d71. 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/USCGJ2564879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a936cf9960d727dc2e3722649e5fa384245c7d1c9191720aafc43b3f592b7c9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGJ2564894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4ffdc8678570370ce04c2aa1027082ac953dd95c07fd82d29300431b35ed4b. 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/USHM22530061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdad5c074ec41af6fd47ca02f5231e937ff0719efd386f93c4eb3b8a2934f92. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:06Z), 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/USHM22530064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e2e00fd872fcb11095585e3bba69fe768baea6092a95b07fc72d1e91df9d72. 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/USHM22530065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4249065faf9007816ee35369ecdbbf535032977dc676fb71addb5ba0b7158a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/USHM22530066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df69417ebf4ec162370f6a024b3bb5fa4dacc932d5f326221401943fc42ff25. 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/USHM22530067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa54779d22441b99d5d0b226bc3e08b7ea3a21769ea89e41d3a2c1d17c73067. 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/USHM22530069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b3e133d653baf15cf96b4b5a2cae225736ef45d32cc49559e89948ce53ab63. 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/USHM22530070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47024a12faa5bc842b704e9cc5efaea515e2f6f5fe643a3554321d18fea49171. 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/USHM22530072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584f97add43f598c15b6ef1221eb456c88ff294f8a684d4a2d82f334f46d62c. 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/USHM22530073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840fa96428a3f8416743681e3309e88a6b3da817c07834268070adc1015d24d7. 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/USHM22530074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50818d6dfb0cb980e0e4feffa7c2d92ac94ef03f9fcb941e1a2b5540b911c1e. 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/USHM22530075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64b0dcefb8116033845d0c6f7e0ee6c54884ed2169eaf39c487387b31914676. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:53:30Z), 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/USHM22530077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ce1c858ed1ab54f205cab136c8125acb994a4b8a348530bb61ca68929a0c90. 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/USHM22530079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa85806f3b112ed4d156d77ed35304d01a7d06b26e6de8e4537276c77d958d0b. 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/USHM22530080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32dbd33f3e080068e5e0f3869db2182838514dc5109d541fa989a6b1f3ebffd. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USHM22530081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5e2f48403046cdff05438f6e628c4d6cd0fb6c793dd6c0f7cf634ca1883493. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM22530083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04df1d57bf5291b390bccd43254a7c75292f3aba48f65f7223c2484d5b08933. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM22530084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd5b000e5dfc25c206bff81b7e306f5da68025263f007c6ed4ae87e18d7afdb. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USHM22530086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269a0594eea700224a6d5f252ff3b3328719a17c5cfb938912a3a96d6ffce999. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM22530087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc141679f9c9aec053301356010dd346cd75b0e3f06d2eafaa42e8936fba452af. 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/USHM82532712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c527a9cf29411e2b57e20fecd03adea3e14413b19e235d11ff7043399a9253. 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/USHM82532713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa09a08028039fc3b2be998b2480ede5dc56d975f4bb95a9ca26bad8c46d230. 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/USHM82532714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aa39dea70bc4b42885c43fab5ed27a58811681ee912690b578b4023c7f4f15. 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/USHM82532715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa849664171712d91be77d97ae0dcd0a9a5c106349dbeb680345cbf7a636e5164. 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/USHM82532716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a8cb707d4a2d532eb56e800b2394eed9e456a139069e7bcf38c1fde319b06c. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USHM82532717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fc72fe61f484d508510ac61d1a0f32e0d28f656c2d79bb1aefbad4b73b2a6a. 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/USHM82532718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52ff4bce130cc28146fcee73d2f1697ed301df48eb09943936f7e8ac15a0802. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM82532719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e05ec7d6bbd1caf6ad07b138bc86a70bdd9ff40e6f2a34a5192ef7c88cf4b3d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:50Z), 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/USHM82532721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149302d98d08208b9ffed90cd529be18740f16a19692ba370723b1cadf20790a. 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/USHM82532723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020ea87fcd8f8c474207ebea2666c2c7bbe1d083dcaaaf02e5f132892161dde5. 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/USHM82532724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2c3d841edb86e3c2f3e15125182b2505a6818a419ea1e9ab2087a6d2507ce9. 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/USHM82532725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040314019b5da38b4f79ab381adda1a39b989c45fa8aa10137776c8b16b741a0. 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/USHM82532726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b009266afd28b33348643971712fd07c1d90474cff7c9d3aa754dbf3a2a37. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:30Z), 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/USHM82532729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ad96322b6ec809a3e944bd55ef9b735ddc7e1d220f1302b1ffaf517accc508. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM82532730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a1b37d5c7a7a8686509f857e9f35e798525355369d152fec64964e0849c9d5. 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/USHM82532731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9b6478ae312d9b0af8c35790bf3c47da6bea287c0ee75157947cbf62c65df4. 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/QZWFJ2501225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2381c8ea10aa35606562011533792f09c5905875aa32ce795f905af11751b8. 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/USX9P2574214.