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 0xfb5f456683604364d5aedd70bffae581d547c62cd59e5f456be0e77991cca2df. 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/feea3b03-7597-49e6-87a0-c7fd7af8503f.json and https://artists.proofprofile.net/proofs/artist/feea3b03-7597-49e6-87a0-c7fd7af8503f.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 0xda0c904c7cfaa8dd9bec8e7a478d0d5c6e51a8441a1553c51fbe3b82cce3f89a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:22:11Z), 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/QZTB32248546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16949c0fa6c2c91e3ba1022315bd00ff66694d151edcdb58566e17aeeced48ca. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZTB32248553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd1fcdf88e2e13e4e0eba0f5f9398bac6ede48ddf7b904ada99f98ea3c03b8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNMX2331058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0596cc010e277befba2af2290a0c5062e83e266a027934aaa194c92566e796b. 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/QZJ842003964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e68d6bdd24ce6493662bb3d1cc6e056acf334d267b56c4d2d85238bb04f8cb. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZJ842003967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128ad4182006f3375f0fb5af0ea736e3dcd62ae149e75dd764f96b15a0aa0a0. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZJ842003984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bda8ac41d73f3a427184336d7493c3270afa217bb3b16320aca6968ad674a7. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZJ842003985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ed31f2ed6694e4606bca2ed360ae445552c3dff46128a337c4e61694f2a1c8. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZL382419600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15cbaeaf4f3a5a1b0c9057396ca5c7e95a160d4a3cc22aa95964fad2186ef4f. 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/QZLL92476153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedab7f08295420801f66a9468e8078e5bdf03fdac4f55284ee30b4fed49ae97. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:51:50Z), 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/QZLL92476162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959bcd9d242a89a338cb1e3cd45ba7f7127c07b0479da57076851f0f2baad672. 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/AUMEV2584114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cffe683c34d94c00ce305ff6544a0a6f5f671fc79e9201de9d0903e168cfd4f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/AUMEV2584118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3bb240e45ad684dcb2e793d1592e97a2e8ab93c455eb3f4a928a2431148f27. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/AUMEV2584119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b2589ffee8aaa81bc8fa0fd0d00320b3d24a85cf898931caef647b0132e70. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/AUMEV2584121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d64577df18d25a249eb1ea83b1c0f552c3c88e9cdcfddf578613f0d562b4ca. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUGBT2510002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0f052c8761992667fdd7ad1330dc2c9034234a7c9269991256fd2edeee3b1d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/AUGBT2543474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b75991590c6dcda57aa9d54eec4b03f002f17c93e17f55e89dea32249537cba. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZWFG2356831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe113e957ea2ce8debd03ff8f070dde06b7bae666a2bd422470614f5228682951. 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/QZTAZ2387489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7de021d3ca8f72d2961f4513b10e0f50b1483b9e32ca68a943d7d3ea1a2140. 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/CH7811113458.