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 0xf566bd4a985196effee4eb231cc6ffdaf87c92287907e18b3d356bd2798e08a7. 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/e98bd688-a8a2-4637-8ca5-65d693136068.json and https://artists.proofprofile.net/proofs/artist/e98bd688-a8a2-4637-8ca5-65d693136068.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 0xd4a47321e50314041ee63667cbfa38dd47dbdc382fa9f71650bf115061167cdd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTB22228618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ccdc7f3fadeef2697b09243ad62a84f6f5b981e5c32b4e3269ae0530213961. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZES92350850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6ab8ba416f05981846cb2445478e2770d764a5cb82e3ef43fea2ed8aa62744. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZES92350855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8af18a61f7d0c92d8686a29d2299bfb6327cec08ae48414e78cab7deb06733c. 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/QZWFS2314679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585c466d5b4da59853a65b661dc20ad3cc1c63592aabc12d4d3a2b4fcc1874c3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFG2359586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8985b12a2f5971ba8a30fa8a793a8a3d76baf225fc4cef30cb571bd5544ec1. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZWFS2314680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3865c58aa881c913a4d54b79942bb1a22c58ea0f4ed5eed183450d769953fdd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZWFS2314681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337159bfcf193333afe8df97e177bd5335f89a9ab27f37d7e044f93d314cfaed. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:41:32Z), 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/QZWFS2314683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313a3d6bede1ce9ee42af412608a03f3b903125e54204682b5ce74fd9302daf6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:52:41Z), 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/QZWFS2314689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb51514e7fdf3906a34a08904c0d9161845f37a68d3b934b8cbe8dbb1b0571d. 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/QZMEQ2471621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c785509339ce2431cf60cd8fba46dccdff6199fc82974281472f39dbacddf2. 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/QZTAY2476883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db0425fdb0b82f49e8a88abd31de3ab267fc604f15cd1ad5ef5a87e4d38d0d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAY2476885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9477dbcb0664da8c7dad47336cd1ea43357db981495c8008263d3b05a792a2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTAY2476886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a6439b361a0dada25b714866987a2133e379d05671871955b3aefb8cfea007. 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/QZTAY2476888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db9d847efc05c6a715ddf9740f2481499ce13a6fb9453ebb1fb434526a32b80. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:55:46Z), 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/QZTAY2476889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f6669dec7131394619773bba7ed58ef3d70da19a83808a7ec50615c23b6092. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:57Z), 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/QZTAY2476890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd03e0257220a24b71d9567cbcdadc15cfd7478cc4dce580e7bbc5684caabd21. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZTAY2476891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d15ae6a328d2a2a23d80ce71760e0a077920eaa54d17d2867baf9c4b587f7a. 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/QZTAY2476892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8005101c223c9a4a6cadaf674d853030df3e380261522b98f5d30d5f3d8ad9fc. 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/QZFYY2547430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0acae735b8c1fcf09cfe55b4a2461e3bd686f039fb6e92e9c5c186b619f619. 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/AUMEV2592398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f9758423d93862d655bee2c762981ae16fad4b7f19aa3886440f473b1f9d79. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFJ2516541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8599cc0f2f89690cdb4f6bbd0b96d592e4e0be5419bc81e1789c8296d9c4c2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2585088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0acae735b8c1fcf09cfe55b4a2461e3bd686f039fb6e92e9c5c186b619f619. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/AUMEV2592398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48d4dc0a0eed73745c0c79516b757e83cb5e77d9f861b649f7f2b88fccd0099. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFJ2516544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ff0a0f94ba1a0ff37ae57643b31d9c52beba8a027fec353bb27cd8957b803c. 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/QZWFJ2516545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868f8af3c7c764793b94c7b6ab199c4f665a9c6d699efed1a4b59bdff96556fc. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWFJ2516546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d1ab5eea344584180f3bb26c87c6e9881172e63d561311fadc38ae874e0f79. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:50Z), 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/QZWFJ2516549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c5cb97068a8b0bcdf539913187d934609b5bbd202110a279828a1b5c77685f. 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/QZWFJ2516550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9884b696906cbaf24baca040a4a43e967ba9792d7a5a6495dbe6baece985840f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:55:59Z), 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/QZWFJ2516552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98dd2c5f8ac9ca910f6f90ac2e3494acb288f93a10d791536e6f51a77b562aa. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:29Z), 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/QZWFJ2516553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230673e10e4419f2a522ad1cff2e95bedf441a05a210324ec5000a9bb6725a57. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:42Z), 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/QZWFJ2516554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705fa69fd7d191b2ce55a170316b839b43bdf1c81f20c8fe8656038b7176f738. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:59:28Z), 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/QZWFJ2516558.