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 0x30324acd02d8bc979bf2d211b10cc4f43c492532a00ab57369d7d0fbf7f445fd. 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/5cb7cb56-a59f-46b4-8bf3-21169883130a.json and https://artists.proofprofile.net/proofs/artist/5cb7cb56-a59f-46b4-8bf3-21169883130a.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 0xe175c998a00b85b3ef4101d1f210d6177e62fadded0912063f8a242e6f1e4137. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYY2499238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96134b51c2101d31a10201f0b29a0cab728543a363437bb5f9e6bfedaaa63a4a. 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/QZK6H2372609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270c01f16c34f78cef9f14c227a2546680fd7bdbea3cfc8b9960da4c3d220ca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6H2300883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37079db2f2109209d6b6565395c642dc8aaeb400d8f2e433ead7c99e89f3f9e0. 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/QZK6H2303069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a292dec7a11a6f21717f64a9892a8771f37eb9e5278d1fe9443a6ce9c4e6de. 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/SE5752385115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9397171ba0018ac90d1236068797899211d71fcbde8770e5bfbe558f7fb3d90. 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/SE6XY2251221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdba59a7e2cf4f8c53906d382b4510f804eb5523ef538d237a02c222e4c0b83a. 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/SE6XW2270464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81364f6d505d3c991addbf0145cc28987fb4ebe96dac4bfa0788211b47f8014. 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/SE6TI2086810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c237ad9968dc1065578a90a9ad76e6ed20d850aa5be77abfcb218bc2187bd7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZWFE2355280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda183365bc8dacaa59a551661e6b5814df0e5cccae3de976ed21e9a4fea59a93. 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/QZFZ62383391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a623cc70b3baa48ad6e7a4e0ba8407fa66ebfc5219faf3c9127caa37c7cfe66. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6L2330205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7df33b2c9d5c3db6bf2481e6f522d5c2edfd42b7cee70161b5abdca2ea81b5. 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/QZTBB2221026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cbc5ff044b08833639e9d227c960af24ded5b8f7d6a000ce2a4add192016c3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWV2374022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc2a6c028e6b786c85f9d0abf70ce0a5241243d063303619e0135a48e766b78. 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/QZRP42243555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e5dfa88b4910704fafa49bec5dcea12ee760ee25c4c54a860c936d69114b0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWFE2355282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f3ef88253a2bcb4e51b244b5a6ed5f2ea058bda108c12ba696bb73f5789ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFE2355284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab4967177f6fda40c5a451d8c2debd45cf55ac8c213cc3b8599db25ee3ad872. 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/QZWFE2355285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa420e15ad6cd98c83e4e8f65e55afc80b0666fdc4ed899d39173bfce19512cc2. 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/QZMEN2207343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498f02b2688ef6b6e1a67414b298aa4e923d27a97bd9cb3bfc0677d178ea4c16. 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/QZTAZ2291939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259d701270610072e029a28b51f2f314a5cb3aaaf3b9eac87f64d6fe8dde2e48. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAZ2291941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fad30483eee9f3b4a527f5ed917b10ddc33431211075084a15283c3c16ca6a5. 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/QZTAZ2291942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f6336fcb8bb1786627c805df14f974cb0284ce195a61ae63ccd088ae4da8a9. 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/QZFYY2366192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4397b47c6c18560a17ff582b003d0c320ea1ca8344aadc316a512a1e17b687cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZRP42491316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18bc99cfcac790ee4797a24459813d5aacfe6ffc843451f63e13de842ed486a. 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/QZWFK2300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831ed9c7f173edbe5dc8a41e2d3b1ee6a1804182dd4e9f58ad5ca309831fe79f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAU2468946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ca63ab162fa52eb76cfb32cafbc823a429f3a11be406bbc36bc1cd4024c5d2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAS2485326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b7cbee1a0720d6ee7d8113eb28dd24a3835e32a78c7bc3d757e09b576a538b. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZWFV2437960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a623cc70b3baa48ad6e7a4e0ba8407fa66ebfc5219faf3c9127caa37c7cfe66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6L2330205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0832509bab86aaa9aa8cfc6c451dc816f252f0e98eb859b4d45ead804f83ff34. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE6QE2161755.