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 0x5e7fdfad3326d9eaecc80541ddd15cdeeb4fa78104322e1f62bb32d0cefb512f. 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/538ca137-1f27-47ab-abe5-2b3978ccb359.json and https://artists.proofprofile.net/proofs/artist/538ca137-1f27-47ab-abe5-2b3978ccb359.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 0x5fb5a742051ba4d5c764f05be3c278666564ec090ebc143936b4cb408f6a8b68. 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/AUGBT2424174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106d520d1874951044a1fd69a29ea0784302fd2500d0d848029a814d66ad0d58. 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/AUMEV2477505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8631ca45d28ea0b69bf37147c333825189742b43be0b88c7ffa0216519800e. 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/AUGBT2238896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d82a656f9be25f619c2736b5e6b874e3686875cf58d80161e51bcd9e770384e. 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/AUGBT2226096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1106d7e992c9931e5e75260f52f96ddf63f1714c5f24501a8c16aab3b943a74. 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/AUGBT2226029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c24d467cc6a5a45c6ed9219bf6f3da67a9588d693a20d76d99f70720567069d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUGBT2219469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1076c5456db06355f0726f8c76584bf08eab991997676c0865189d3faecf1d38. 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/AUGBT2204992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76db879d546514d981f565dfe000cc796db4d977bd68fbf42b41d1f089196dfc. 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/AUMEV2277448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbea9a30708679ec349717839f3574cd107bcaa25a69c9881175bcd98a6dcb6. 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/QZDA62213707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32044418bbd4d0249913dde49ec0efed5f4d4394bd4ae93b34b66c80dfb84295. 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/QZFZ42255592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882ab6bfd476db7cf16b1d54f5a06afbb89ff29a06f8e7cb61c7ae28bcb4ca4e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWT2150868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7fedf4abd6b4da8f054a015cf77f66133374f73a9768be041502009815159d. 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/QZNWU2142388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71177158f8449279d5f8a4a8b03093467bd45a9b1421777c0f3b39e1ba63ca00. 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/QZHN32101433.
Against All Odds (Take a Look at Me Now)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a15dcf671930d4f2a1f2cebcecbe85e77e95c038acc4a8abefae431816c36e4. 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/QZNWY2018210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6e5b0440bc6490f02f485c893855a7469dc412b2f86ae86cfb8e28ec189681. 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/QZMEQ2078042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece7992a7f69358e06a3c0df17fc8473ecb949215e302f1290aeae854504e6e1. 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/QZK6F2070496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71290e0d877e120bb6afa0d85530c1e4734f5abc19d512021507535637879c90. 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/QZFZ42057340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e42d85328e46de1817dae8525f80e03d087b47886cc6a19bc4e7542f579fbf. 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/QZHN71947871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9a98660aa3e0737fd6fb832d7962c17a84f3d4a62e7d5b81fc78913a613a1. 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/QM24S1917109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3e9f1c50612b11ec31308bed0f0ec0bd95fb96ceceebaee70c2b23c14addc3. 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/QM24S1904658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e2cbf05a185a2a848e4cfdc69bd2c180a7b205c4dd1d17818c6f08abf843e1. 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/QM24S1838887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81780342baa2b3a0c744986fd7fcb7c18d4012274576d75b57e37ae21b3ae04. 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/NO2QV1819010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0125a7a21270dbf4ee050759bb2768c7a77841f5f0bddc715c8971aa4ba54ae9. 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/NO2QV1814010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71b12e1ae08c42b45185e86ca92a034d107d577c3cbfc3ce3d24172e44eebe1. 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/NO2QV1808010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14427b1d5eafec8aaf151c66db535ab65677b5452ba3216011a3262d5600326b. 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/NO2QV1804010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7d090a8e780f75e5c66493997423d0998efe5e8f30509b17336cf1bdd11bdd. 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/NO2QV1803010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724a62bd85fa3fb090fffd7a67f7e449c6295216295b6752e208eca22f0752df. 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/NO2QV1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d10d9aa0894c7292fe9a9f3282dd36ef51d296d857693ca356b2a0a933ecbd0. 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/NO2QV1719010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba156e56d0431b6622b37ccafc8f22f06b19116951f8ab3af2e1b8af8c01068. 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/NO2QV1720010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce8b92aebbff06eb3a17e5492d669b868c693ee6e14c698fb29069c9ae2de03. 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/NO2QV1717010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34871bbd24211a33d2ca118b3bac0f6a4522b28d860c655a895066aa200b196d. 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/NO2QV1716010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5245a6020c2dc69b5085f09a4281f52677697c86b067e1d736f51af49b42cfb0. 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/NO2QV1715010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886dcae3025790543b3683116e6321c14ff63119d130821e8cc1cd563d517509. 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/NO2QV1714010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f51f69a75d918ba1b6b191c6c4290b53852f6daa5d7044314837cc35b291e6. 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/NO2QV1712010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69991b3da3d574c40950d873f28a2be2fce54897e6e7d94d77517030af64c9aa. 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/NO2QV1709010.