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 0xb3ef620386f26cf22c9adbdd2628fed5e040fc452dfc2795890b71209a762f1b. 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/ec0e5680-c35a-4dd4-96a9-018bcd62254a.json and https://artists.proofprofile.net/proofs/artist/ec0e5680-c35a-4dd4-96a9-018bcd62254a.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 0x76e20f7d41dc9a1a85c4bfb699a94442fce95917133dc8515e27d1f0ce6731ec. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6L2514840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06e68b927edc5f4c3b79b0b029d40752aaa1af9cdd6a839a56630c4651d6e3d. 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/QZK6L2514841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e84a019a878b254830e54eef38a4275b143002757c572ea2251300b075389. 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/QZK6L2514842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59dd1415a532df8be89dfbe9becd57bc9d13dcab3059a36d18ae75e5acb3d21. 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/QZK6L2514843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640127515bfe391cbb916ef8f35b2d4d8ba26f92a1ec80ecc8e917650978adb3. 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/QZK6L2514844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9af24dbe8c6bb7eb4bdc780ed113d7a6a6dfd09d1eaf5ac14c45a01fc452c10. 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/QZK6L2514845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ca263d7d1105c19e66e8159d187ac4d3811c20e08dfa217c97ca1296aa6e90. 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/QZK6L2514846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35ca4035c1ee3d1df6e8248f588697f02d9a34f5fe2ee9e9d9d415f98dd4295. 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/QT3EY2476717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42477436392c332802a26f24decf48ba7c0d9cffe2b43eb0ef4f38074787836. 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/QZMEP2473769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc607417f6e5b385263861327e354f1461249da15945622c4366649cd45796379. 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/QZMEP2473770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09110dd6ecf51e63852418ffd59528a1ff70ecead7da49cff1eef4f6df95562. 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/QZMEP2473771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241fdcba01120c2e04c2cbdf0305eaa995ac84327866af385199033cce3a7cf2. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZMEP2473772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ef5208f064ee5f1f3bce9c8923205fe07b4b543f742e80d17275def6cede57. 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/QZMEP2473774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f52d841b0329a6c86de9d1e1ea37d2085614dc2a1a91dd27928d79033e95177. 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/QZMEP2473776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf641c5a28f4de166ef14672d3971a28788e63d2a6cfe511b109d9324479869d9. 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/QZTBC2318427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aae9d08cd19104cb4d8f73b6d7d8f6a760763d446cdfb0c257c297dc6f050e. 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/QZHN72470647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb9b1d0cc82b5fe8e029b573325c990a815753ba5583506cefb131b9ad9f62. 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/QZTAW2304701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f083dbe856d3dbcf016e1e168bdedaf3fdf59e935e11d1e92aa57bedbf4f6ef. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZHN72470648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb676ccf5f92815038cd77fe5513872efa2513fe79131d26988a33b067a043a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:36:31Z), 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/QZHN72470650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5a2bcaad81c164451ce284f6feae13e420d95baab448ac0f59cd0816987bc. 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/QZHN72470651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb73b2e9a87d77fe49f46a6315910e90dbbd374bde0a4af06e44a5488958165. 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/QZHN72470652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c72c26b073f8480e3842cc770b05bc6ec0c17127139ab8f32c2719c30d3931a. 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/QZHN72470653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5474b905c9375b039387c8ecf2bc584588060adc969ff5e08db2ddd35b4098a4. 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/QZWFP2357077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58fb62dbac49843041099f3f237db62e7717d7f26aeae32b77fe8e78f622aa2. 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/QZWFP2357078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57dbf7c9bd20249a9585005936532881bf1535c9e57736de86fc8d9b977abf03. 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/QZWFP2357080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f63eec7026de12c1c94981bb8399ea399d5594faec07da6376cb69dfe5c2482. 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/QZRP52139820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616f8e14e785147a70329e50bf449562d7e522d2b236d443cce47b61a6db26a3. 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/QZMEP2542204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e6c6e6a89f68dd5b17cae6815f12598a9fa1792d4c8ff3f31315e59158c7d0. 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/QZHN62500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e6c6e6a89f68dd5b17cae6815f12598a9fa1792d4c8ff3f31315e59158c7d0. 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/QZHN62500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843d190111ab8a4f76800f8ff39e678909c4663e5c2418535365abc9a825284b. 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/QZZ762492495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ebced82954b93ff9d2ad5e15915968d663947c333c9831d0df98e018bba2a5. 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/QZZ762492498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8ad3b4f8bd59891b40659d6c72aebd2344cbd41d0788712f13689f4c05a875. 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/QZWFU2479823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ee85854ca6064c184b7025f5b6e5f788ab5c531ea9a30da2a438cb9bfcbeea. 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/QZTB22492163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257fa1058c6ade20f449ce19aec4eee9094f5c4d427e6e105bb593d7c049426b. 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/QZTB22492164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130cc0ac8236e7601584a789b4d92d6c9602d5b45ed301e7116ad282dafb0a17. 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/QZTB22492165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1d25f50acfb2de71074dc7ac9649c1e15f1928c6d4e1161aea5428dc118143. Chain 2 (Bitcoin): anchored in block 959147 (2026-07-22T15:43:44Z), 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/QZTB22492162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb968df5d2649fc8f30c0f4e8ed659b7453f2a4374070344aa56dd5e9d95959b. 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/QZTAT2229908.