1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x774910d9c1315844bbb7a81c38d8f6b2a299b88b4c066f69b414a3fb39646e18. 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/9c66f587-ca28-4193-b77b-78702ccf74ef.json and https://artists.proofprofile.net/proofs/artist/9c66f587-ca28-4193-b77b-78702ccf74ef.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 → block OTSBitcoinBlock must exist at that height 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 0x8e097404655d1919945a692f78b778011c5ee0f671913b1de26f3f39a017c01b. 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/QZHNA2096698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f53c38081adc58ed8efdbd97fee3b6d6d9b019981f90af62f56e864bb4430a6. 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/QZHNA2096703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9241210e1aa7abfe02f320869c27c645c8110876d24c09ca24e6b73dabfd684c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNA2096704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e754688d34983d12991281d350c3a1081aa3a144dcb34be40060a6caf5a24cf. 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/QZHNA2096705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8f93c08b70f394f0ce635a41c42f17a2ad79119b34f6c8fd1302f8ebc28308. 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/QZHNA2096707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dfa1897a8b2e111149b20cf65325e3f9b98d0a9648dae9b490e891b3c8420a. 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/QZFYZ2485021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a21c9c39e6231c8f9e520dbe02c55debffc68e203c7998dd8afb7d91811120. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZWFJ2307635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7328b23b47b381fb6bb5fa2ff61660d61860cc818745bfc30678e4dc11633601. 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/QZTBE2375020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390fbc4bc05fbcd68e299b39cc409a6a3d00fa6d04cad9369c1ccd1142b5de9a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZPLR2355888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99961a1fc91321fa31654122db639f78c2658c185f0ffc5826ae8c77eb629017. 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/QZPLR2355463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39988164f0bb7b6177a52d1f39233987b055ba04eaf7268663ba646e941f447. 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/QZK6J2335960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a63176d43cd2ce169c58ae8a91b2cbbc12d2abcb3163517edd6be01b534202. 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/QZDA52338702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df69661d869cbd7ed9bb7b11c9595ffc77e0756c466f2697c0695cc79feabd8. 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/QZTB92284791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ef0ac0c6d84fe2c7736959491393d8c13bfea9a6eb2d2259753352680aa2f0. 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/QZTB72235484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1d2c8a877535c8714926b542af0bacbbe3a5b501daf3917745a602b918847c. 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/QZTB22248112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3765c89b1d67e7b3300f6c398a2fa5ceec295126e266a1a0e6afc65b97e5b2. 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/QZPLR2270598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b56eae83cc2f9d9b2cafec294d16978abfb8fb363d2cf4d10353f82f210900. 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/QZNWY2265292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c1d875ca80cbaff47bbdaff0a74e4aa7b66baee6f939433579c9c444664570. 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/QZNWX2278357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d37ee056b60b4485373f0d357fca30c612d22c0bad3a662e21da7f96a5b01a. 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/QZNWV2209450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd99098020566a5d6a803a7413228509c23c4607aea62176043be47a7976924. 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/QZNWV2209451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884d1844be764528a4f7adee9d361b7dbbddf6f7bb25bdda8722d5923c5a26e1. 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/QZNWV2209452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf187b107455b41fe219a2fe77f4ab0e68815b0d5c10bb88ce57ef3cd5586b51. 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/QZNWV2209454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9dcfc79e1d0d59912891caf64cf60648ac6702a616dfddfca381e27188245d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWV2209455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54291b5a203b5b6acde0c6c113540ed5b1457df47ccbf741b702ac46230941c7. 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/QZHNB2238151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc50f3919324083bf3c3a141306ca6e9a9e41621cd6483ba69adaec8abe105d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMER2105361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe9588b035dfdf45b45f95bde00e72a0a8c67fd9f0d3261fd32f9efd989f6a6. 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/QZHN72157445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05bd7c515deaebe854bfc7a387405b83e2b5da50a796a82af24951fd7cacf537. 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/QZHN62131355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59298b5f5661da6a6bfa37593f627388c9dba828eedd440975753781212ae2ad. 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/QZZY62400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc9c9d2b8ee41fc9f117265c16177cedc2d0f292f9cc07e6e328ea535a1dd3. 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/QZZY62400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290fc84f01f9661ab28b98cc2e697c3a02706cd3fc8d2ac333d4b18c70413772. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZY62400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d3816434ce5bf25b919fb83110efea8c645c428513510439b6535f51669789. 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/QZZY62400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443e337b5391990115b6d2fcf9fea8f70e92ec8ed733e6c4e5afdee9c87324e4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZY62400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0d6fa2e601f1e13e9834990d240d67c62f30b37396b873d5dd6b2995b43eb6. 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/QZZY62400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed191579c10c77f22e28f238b7d27bdf336f9d0e609eff61298420b5e204e05. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZZY62400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bb2b08be8693fb6e06cc3a5d65abc0be43a32d5ef2594268de1d76e6d641b4. 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/QZZY62400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aac3f545a77e1021d8db3269945211dec729d241ad311d4d244c77b7aad860b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZY62400020.