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 0x1136bddb9b35ad7c81f0ac7d1294b08ed1ab94ac73e488719b9e4f5954c1a828. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/337656a2-7673-4533-95c3-3b65dc5f8b1c.json and https://artists.proofprofile.net/proofs/artist/337656a2-7673-4533-95c3-3b65dc5f8b1c.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 0xf8c1becce8e3858c5f1bc317e2bdb4262f0afaee65f4e7692a03897a68336f00. 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/QZTB22413362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be848621927057e025c172af726156638310995a04e0effd2b24a3fdab998fb. 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/QZTB22413366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be9bf3464908a013a662470c086408f48b5a3e7da34859c7378390f702ebdcf. 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/QZTB22413370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a82fd2035eeab7b1961be2a0b6962ae16a762eb034dc8085990546e78da1b35. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAS2498964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3daae087e6d832271cec3041663275867977a8a79a7fa94a9ccd6e93f51a4e78. 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/QZNWS2468772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7a0c88ed0e6ddf81583a9ad63be0ac7f6c2cba169da6adc5b76be161b3830d. 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/QZTAS2498966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eb7c45351f1439ab7e2058c51f4142a733ef9d035ce2a35858c9f9a2261499. 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/QZDA82499713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa54077b663c8ceddbaccc2b56b978fe07684de6c95053bd2ae705cd2df275. 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/QZTAS2498969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf142fd6ff993a7aa79224175d13bf832e53736036fcf20c6bec84186b0a9b. 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/QZNWS2457456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781ae4f506a2beaffed5620a1c7967718c439e6f2d6d690b86284255909b1fc6. 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/QZTAS2498971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5e14d2d0c5a4e49db62b969ac2d279b1dc4dfeedd74557f60b259248dfa585. 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/QZTAS2434642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb937d71c0e3d6ced3d253e0f072be8ff05162ed95af66bdffe61bdf64c0c9e5b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZTAS2498972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bad3745b38cb5c4a262019726940f41adf848415e0098a0088a981e5f85ca4d. 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/QZPLS2441592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb86a05c59c3af98c31cbc4ef7af770f80e3e98d84122653053a876d03db05d. 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/QZTBA2329787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fafa2ae3041a4322c2eed6a1899873bd359dab8a0222fc9d8a4320e80f0692. 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/QZTBC2392674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb359e0e236cef3144632565b0e15e042b4f32844665e65c3eca3afd2225a9c1d. 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/QZTBC2392675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd1223d4930b149f6fd96854d213d6c67f900da0683ef98472fe1dc74033bd6. 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/QZTB72384071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bab9adc97d37226b9f24f113cd0d524bb18e8d14fc4681df190cf17a86decda. 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/QZTBC2392676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a02845769a22ed0d8b963451ac2a126270fbe402d60420d19c4bb808a39fed7. 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/QZTBC2392679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f034ce995d8fb51d9b60006f28bd7a37c02db785cd89208dcd82e66bcebd0f. 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/QZTBC2392680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bad3745b38cb5c4a262019726940f41adf848415e0098a0088a981e5f85ca4d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZPLS2441592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfcced18e0acc2eaeef1e811d12ed0175783bc9617bbe1434590fd82106e16b. 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/USACX2300185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266566344348f698c37547ed78939fe022ec9d42a62fc28c2847befdd05d511d. 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/USACX2300187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b9c8d6ce184cbfe5bce558436268c96dfd42251021788d79972638c6861888. 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/USACX2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0a3fe1b93ad81766730f726a94e086b3915b070d6ad010e37cac2d18d88b3e. 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/QZS7J2487217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa103438f4bc25dfb0b7748e85ae6b868ba18580c699ce41ad2d9669d887789ca. 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/QZS7J2428946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa044137ac5365dc253aaa36a0ec0fbbc92d73a0f39c8996c23ffde60594b9c8. 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/QZK6J2464795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe031b886b16b7f6bcea6453d4c0e0e8660404e29df4880dba4fc584855d67bdf. 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/QZTB72225609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab2339eb1e5b2c589de4e7c2fcc30218d9604dd1af12d9ceb7dce8211f9e763. 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/QZTB72225611.