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 0xeac3de628dd426e790b82ce1fb6c4ac0593e6ba9e534557e2f6f5987e879c4ee. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e83dd85-af2e-4110-b8a3-0eddcce6fe4f.json and https://artists.proofprofile.net/proofs/artist/3e83dd85-af2e-4110-b8a3-0eddcce6fe4f.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 0x63a46f7e81bf0e8efc5e34f2021c5092c1197be1b31757c635ee680affd01cc4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:26:49Z), 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/QZNWV2482585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0913c5e22de64b147e75601b835da247e983f9e95ddaa766fba0afb8c1e1b640. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWV2482586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d495fb5ea4ed70c699767072146364fe0fa210651eae5cabaccd76b5de09a2. 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/QZNWV2482587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccae3fb45404b2368680cc423f76c592577023b9000d4f7253ae61dfebb4af4. 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/QZNWV2482588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6545cd0e9cdca1963bb1b6030cab0d0c5fc55cc12935396797de70bf912d26d0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWV2482589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dd3bf5a86eab5d36129a75f9680b736b16accd390c4f917a51cb982b57ad4. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZNWV2482590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ed9e669a94b6972c228c754b2e79df850b03cfb7b541ab52f7487de3b621d8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZNWV2482591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a84b447b780ed696358b09fae31241b9d021d0dfac4932c3194e4fc7f36629. 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/QZNWV2482592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0071399db5312a1c03c3cdb0845f622abe92ade0f349bbc118c9fdd609f09ef0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNWV2482593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae0b7354907e2e606da15d13e11cd65aafa14ba4cd3e24b6098ab3b358bc6d6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAY2491828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf61bb25d40a55a9ee0ce324fbc549a2fdf5668e2f7237a3717e44232a94e6c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAY2491829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adf9624eaf08413764b14505e7b5c6f8619b30bbd4fec9004965811b02ac7d4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAY2491830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf12193b17e4938af8cad7c4b18d156414900ea48eb5b47e9bb4042212d748e. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZTAY2491831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91c69a6bba67af3e1a5c39cbb5e6b5a2a8d491617ebc78999cf6c32cb294cb5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:53:25Z), 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/QZTAY2491832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276561b9c619e60fa7986de82b6dcd7cf8d2f74ccfcc8707765be4880b8a5a28. 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/QZTAY2491833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121162bd31bcc5c2797885b0b53009b1aaab27d42f0916d0186c0f61ec725e83. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAY2491834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a456a37c294bbcb745733425d1f527616a90d63129db56a546a7cfc0b76e34. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:24Z), 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/QZTAY2491835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41771553aec5fad5f2c904df7a27abf59d1192d47f719cba562f14cdb6262bdb. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZTAY2491836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0125b6d59b95b902a9190957204e30b56dc3307f09469da5ce3099823d244f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTAY2491837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7580badc22618000236f636b9324b7b23cbe083a144b8b4849fd37e852d85. 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/QZTAY2491838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9246fb0eabb5e1c8d5a5e4fdbf4e720271c67d98cfd5bf334b685350992ea5eb. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTBA2473336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48fe98c6053b89530533d4cec6e87af032549a96ba7d1e0385f01c476f646855. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTBA2473337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bde4e44874227b3e4bc9c57eab65f833bcfe80b1f90afc6e762e2dd6f912179. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBA2473338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9552b96866201c20e7a80f57da1888f0caa8aa5cc43a257d6f1eaa8abec4d614. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTBA2473339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18ba8b613b4ffa0cf5c6436c2951211f78897d75985a4ea9e9e8524003a850d. 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/QZTBA2473340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5e6fcd4a208300d545a672c16ada74f2d573c5dfe8c512118bdcdd7b8bc735. 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/QZTBA2473341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f23bc76cf99bc09e7e31c939a7178d3a9f3443a41c21b65cc9c1580a85df42. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTBA2473342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114fd16436008bb25d98f9080265bd1642b89b446b37a87b4c996dff76baf2c3. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTBA2473343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d149005961d1b174ac4145a2d21f22ffea783c4687f4404b32601e4cbbf6453. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBA2473344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234f693801273f484911907817a12b896040a4d46d8730f11e28efd8b296418b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTBA2473345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9cbc3e202d814f52134a626171b3782808919c3a690d31149b7aea1d361353. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTBA2473346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xababb0bf68da6b18236ccf02425e5e2a39f07bcdc535d8db1eb60c77982a53a0. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTBA2473347.