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 0x68b73fc3d9fe2b68d446f1525313b4ea819e2b4d6bff5ca7ca61df763c3b9867. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0a897ade-59cb-4bb2-9434-863f02a5de29.json and https://artists.proofprofile.net/proofs/artist/0a897ade-59cb-4bb2-9434-863f02a5de29.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 0x11c1bbbc57180d683ca4174e8724f8590e1097c2d6ed1a9209ee449faafde926. 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/QZWFN2312222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851f2ce3286c31dd2e1cab5432860758ac8fe1fd201c77090ad870fc27b27d13. 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/QZWFN2312227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cf53adfdd6c41104752fc8725282804ae23cb22e04c81e644a162e776dbde2. 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/QZWFR2412456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295170c8a865f5bfadc400474aff756bc546b0062a0c8ebc59447e55c2471191. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFR2412457.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5060de8d8c194c355e9c891d01eac250ffdfa8bedeffce2d950d708076a825cc. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:17:23Z), 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/QZZ7N2418621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb78999d0536fa046c22c2b5e5f86c0f7bdeb80ea2cfb98a602ea27e92aaa625. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:43:16Z), 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/QZFZ62572798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489244ec07636defa6f92fb5f9fe0376d5b2250d300e1d25c9cc4ac0471b707d. 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/QZFZ62572800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbd9e2d471bbe0034dcf39e5d1e89c14b3e9eda417226e20a484087e4df4441. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:16:25Z), 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/QZFZ62572801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1569e8ca382594bb5ac82533ae3aff8ed88747dced79133df17bc75adeb7b7f0. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZFZ62572802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3796c7a74292ed0c2faa46ed49ae4afed6aeac691c638c1bc151e2213ebb89b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZFZ62572803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d22ec9e3a6599a3130121b1b4dd130c0aae78c43d73589533aabcdfd89ae269. 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/QZFZ62572804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d718fb57c30cf0d39c44770557cfe51ec2c2ecdc53b8bfaf3b5b99fe2d960d. 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/QZNWZ2540430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77132ad71b2e72b8a4822848cf524a1beabf4cc44d577c3fbf3d337b7eadd99e. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZNWZ2540433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859774d94d9f596de2bc616eb1437636ff48f1b3004f8cf1e22ba7eff9114615. 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/QZNWZ2540434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b472f7ae0e9e945abc23989fd56e98162b9807723e35632bc7bbfc22ea6220. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMEN2532039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5f85f76be10f123ec69f25e82e540bef3b8371da495f3ca89cca01c42d82ce. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWZ2540435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79795955d803dbfc4a7d35bb65a8120721e256a5e0ddb6c8ddd41410426f7ac8. 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/QZNWR2513347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159121851bb07fca65baf7c91b80d89c9f25bac2854de3db2ca5c50c56f53101. 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/QZNWZ2540436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8deea7688ea97ec34eac9f4278425e04362e16c9d6c2ecc21699bded65489f6. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:46Z), 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/QZNWZ2540437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff7679543b27c03d5ac9dc12d247e9963a3521d87ba42e77a8fd6ecba0854e9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNWZ2540439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5930ab1ca2d81098771fd9ede5acc334982e4058ea92d48d9d93287464041b2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWZ2540440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0816a5d7edaf54e2e0e327021bc2e0744e09f5cc63186762f7b1b77caf7bdd. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:51:42Z), 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/QZNWZ2540441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b1e0852b068d14dd20ca8f2183c58950ed100491ecfd897634ec49b8a73f22. 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/QZNWZ2540443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740951b59dc29b043e0474212d8eafb6bfa44188726b383a9162dd17123022b4. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:11:24Z), 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/QZNWZ2540444.