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 0x03bb1eda2b1461ee2730527e91661642514ae7c18d9295cea65a8bea2c876fbd. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2955e4ea-854b-40e9-bc32-985878815df0.json and https://artists.proofprofile.net/proofs/artist/2955e4ea-854b-40e9-bc32-985878815df0.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 0xa4b5c64024e026d21ff34f63909434588a56c9c146eff5b2dfecd0086d4c981f. 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/ES5270204601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f061a8a6e4036fb0bb829e23e0d880acc1e1777c5e5b8bd7c0f52c3c2d86e50. 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/ES5270204602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7686e71e79685f4a2448ce7113426a9a5aabab0324ca98496eaee15867deb1f. 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/ES5270204603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54da04f185f96eb009998b32c0ee86ee230ff67d745a0778d2432c886a1793a. 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/ES5270204605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548b73740301568b8c815d5eeabdc7571cc89f94874e06413f002c6b03011beb. 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/ES5270204606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188ee6f7345c1f0153a6d6744a0082e8ba7a8074356d68cd4811e904faec5b8f. 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/ES5270204610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f419ddc7bb19a08c22b33d66fc0bd68fa4768ec15f63610d3a960702693db5. 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/ES5270204612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053b79e8c1fe0c0636d0ecbb92fef63c82f9cf95f21ac78d3fd7b6b2c09ab032. 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/ES5270204614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d35095addf970bc03a964ee36de5494f2fa3138c63a84599de727cdb0c8005. 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/ES5270204615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076a3dab80ca90153e1153e694793103c24a3fcf97b2569886b3584f01ea14e3. 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/ES5270204616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a68549309c2654aaa4ae103c8f6a7b69c39550d09e745e0e9540cebb258a5ca. 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/ES5270204617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105fd4e8288ea4e5442de7d63f8030c51cbfbf91bd32c4cbad3bc15026f8a295. 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/ES5270204618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef691cd650b6d433e78923c7a416d6307ef929f4efddd7b81fbe25dc977595c. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/ES5270204619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fbaa415f1ef2bb6d8fc5108554850d534e615a04cee514b69a941a92326503. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES5270204620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcc111c909b7929bc12c431635e28464d9a741f849ed4e05bf4d1e3c788d3e5. 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/ES5270204621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99afca4636c3211dd8e41606202afcd27c63a7f0efcfb6681d3c1198810958. 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/ES5270204622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7156690b316739819d8222c95dc01711848d5ed0cfe07a4f3b197c8380bc63d. 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/ES5270204624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c33f3adcd9044ba056650875415c44bf68faa7fdad0842dabda63601e03c662. 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/ES5270204625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a2739e25b8f082f89b97004927e34ba450b0610c9841fae16450a0c21f19bc. 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/ES5270204626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3f9afbb8cd8ce36a7696463508d09fe5111bf0fe30bd7608bf030f4d4c22f. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/ES5270204627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f09fa7c39c83d1646ee35b6f9f28b703e43a8afec239989403b36e97bd9d35. 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/ES5270204630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365d3ea539dcd3d540dcc82e346aa08e5554899c893c04a8ca9c28fe4e4f4e31. 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/ES5270204631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b75352a7f769b81d81b7215e949b8a6cc8ea92042c76a51b24581ae9fdcba54. 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/ES5270204632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dde5182d6d02cb60f99476c12a34721c1095402c2a8feb278cb8a14ec482395. 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/ES5270204633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae5320623d43f95ce7817361c0ceb541c0f99dd0cd9f3ba270446eb668181d4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5270204634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50667a79908dc4e4a32e70375e49142f11ba60b1f8006fa0d47346f23f045847. 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/ES5270204636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17626f9bd107b7b84351e4a0e87c75253716e348d743add42ce4a6d395059ce7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5270204101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58c72dfc86049947d72e18be76e268d0deb6a1802ab0e0e24ebcb5c3b9421da. 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/ES5270204102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1f7d899631697e2aeeba74f78fa9f951d28254fad6ad640b2f305ca5d3fdce. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5270204103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c930c8633407deba9ab02b3f252f811c28a7f3c68fd99b90484641ef1e5236d. 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/ES5270204104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b73e24a59fc9f9caef4afd9b8c58a5397c01e98dacd24211cf42d848ad5650. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5270204105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06b2d0675b2c6c1b556b8f72f51ade9c90ff843a23145e44a5c542e8155fdf6. 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/ES5270204106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab354936eb064080485597f45992f6f5c585e7b78442235a19c868b77d7470af. 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/ES5270204107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87f121142696d080044f299d601777acd31e190d0879b3a82b10208deb31d84. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5270204108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279628bc54ce9585cc12c2d8ab0fd05fee0dc276c1cf90261a1e7aac8d4e7361. 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/ES5270204110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8180b6793af0b901c6eb7c3e78584a2390b3f331176fc818b6d5b82f448f9e62. 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/ES5270204112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fffc19786aa3c837b9eda43f0660dd77d18cb53f9a4c0240f92c1a214d9695. 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/ES5270204113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38630a57fa49a7ef04f386faca2e6b990cb461a61acceadc0d1b84b27683b6e. 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/ES5270204114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0442c9d80dd086ac23ccb1ad11d43129b7420676fb749cb19d70b2f785794aa. 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/ES5270204115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72bdfe2d7c6e1c22c252df1aae9261601f83bd301fced8b898b61cefa325203. 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/ES5270204118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17711ea7de19477090925ec3fa1404526f076bbe95ee038fc9f47b8e4a28f37a. 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/ES5270204119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4409ab641934c532f21154babaa3a295481f134e2200a970568d3fd3a8b95b. 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/ES5270204121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6247124e7ddd3d592013ff8175f97dcbcacce8001106b70467f0e7947507aff. 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/ES5270204123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b0d4c2cb147b20ba10b3b7e5c5926735a0cb9df320e2a46bc62474f4d4ced1. 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/ES5270204124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7309919a1ae53d456657648dbf101825114211efe379477c70a9a475a2e16817. 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/ES5270204125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5ac773579fb9508293dd2b45b73a27a42dc11dab33bdb3e227041db31bb29f. 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/ES5270204127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621430faa2301f8303000fb15cd130fa01edbd13a6310f456f8d6586264f17c3. 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/ES5270204129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0889bbacb04a6ccfb02027de9a423ee96089a331fd5c291e8adf764f37691a3. 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/ES5270204130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7a701e71b857d0cfd893de612fbd037c7032202ad59a8ba69bf0faa850bc34. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES5270301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24b20b78228a435ca757248ec08a5a2a204f2a1d32960193780cd8c38de7921. 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/ES5270301804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11cdc58f96331cb37b56f4f6fae51923665bfb4907ddf42ae696610f887a65c. 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/ES5270301805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55dabccf1f93226ec8fed479df0e21771f01060556faced15b8fc44b636786f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ES5270301808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b16ed04735e4f0f77322ff8bd691dbcdff9ee530b74a7d3ad56fe8aa4aedbae. 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/ES5270301813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7c131a7d6657dbfb46570baba51359d174da15a4edb2aa7c320b6f85e2d071. 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/ES5270301815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b33b8648f0b68d2d93c7e7e83efeb47ab2060521d5bac10a003e1ff6bfb11a. 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/ES5270301816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7512bdbe19434e17d57c2a63c8b7f871d0756b2f77529472806846d2eeb7ccf. 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/ES5270301818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15a52d21032104aedb840b8f05fc351d61571257b1bec28d9e8da533e156542. 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/ES5270301819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8082ebc9f2c27222765e6300a20af249e8e73533045ff1029e918ab7ee1c7f43. 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/ES5270301825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5005737071f7ef3315e568a271286e86ad4e45d4b490184ff6d892c84891aa7b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES5270301826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b49ed541d1381f03ed3a90096dd364c673079d5fcd7ee1d4fe5f4365d812fbb. 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/ES5270301827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe853d97502addef0e2f84b660c591a7c12faac89ac8fc7a0421694c41db53dd8. 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/ES5270301828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82615ea8ef20b6d6e3273d183094306e67e6fa02296a2e3a735f3cea4b6749b6. 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/ES5270301829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8f30f1b5a3769265f6cd9bb3e369511d5cfe5f015142a3e3dc1553c2c4af5. 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/ES5270301830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f54132ce4082c9b9759a7b572f430c0634a52a3771ed28464c0ea2cb3def2b. 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/ES5270301832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f3a7a49c6452377e256ee1361a9989fd48448c819cba596c89eba593becb49. 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/ES5270301833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f115d60cf0d627934641a0e1a8fb6fa642634936ca77b6d7887280f43a0855. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5270301834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f64eeb43450a0c422cfd0518b24c57166db7213e616945db3d176ecd57ef9f9. 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/ES5270301837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc55edfd03b9de5b6490e5fe5b1f2cf3d8f9ca121ce06fd6a5e607a62103449. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/ES5270301820.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch