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 0x1ec495b639d6d8bbb767daeafe206881f74cb9536c44a32e60f9b78eeadc49b7. 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/482db2d2-3a6e-4a65-b2d9-81a446edec42.json and https://artists.proofprofile.net/proofs/artist/482db2d2-3a6e-4a65-b2d9-81a446edec42.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 0xc3bad4dbe47fa4baebe52d36d0d49d4c778f3ed4ede66fe49b773f2c63d1bb30. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES61989324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820bb4e6c175a993989897e5e62eb57821d0c2de0d9aa69c6a088f7e7dc2944f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZES91993171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc684d0cf8ca72f447b7d627841542553de98cd3740b44de5e0749c9e9ba8047a. 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/QZHN41920528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8ba9ffdef0c69197bb73c89187301a15a56649f7173e8a86491c22a7a23f43. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:02:36Z), 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/QZFYY2033259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc963f9524f0697d1b4b65e417ff28ff7c72a4c9565543fa9e35095f833ca2bf2. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:18:34Z), 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/QZES52079766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077948fce52ad9a9d614888c0dd3e414aacd7909426f4b7ec1118181647ce0ee. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZFYY2113195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6953056eb339a3367bc1d838fc1de698726f7391078fb20903f4c9947b14280c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:43:09Z), 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/QZFYY2113197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f6c9222ca45ac9c8e2d95efc62e63beecfe313d9886259ec77bf55a03f0920. 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/QZFYY2113198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b134594a40411ecb1f036aa066220c6e9813cfe076ab8cc6d3456a8bb85aff. 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/QZFYY2113199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c00cfb5a612ce84bf31d6cbefe1270dc1bc13ecd7c9dbebf2c1093ce5a161ba. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZFYY2113200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26408d85f633d263073766c1e77aabc1c6ea87677ffe90989c126a0afb5487c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:28Z), 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/QZFYY2113201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6c29537638ea571dbd174f05a28ee8ed55dcbd867003dee8628c949f9c3a08. 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/QZFYY2113202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40fe60d5ba62b760f4b02ea5e32bd91eb59348471683eb20f4054ac0e42dbfc. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:32:23Z), 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/QZES62234698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9826ca7a5a5f15675e4235868abd7ac45ebd896b32418ed352e39090a156a2cc. 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/QZES62234699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcc1964a5b7f490327907886dddaed864d87bbb895bd39abbcba61f7f4ebc62. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES62234701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5a8833cb0711ae3b28700b165c9f246c0a4fcfc2538f5a6277ba20a70124c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES62234702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9bbd8e9833229726afc12e88b321f117b6507ec0371a9eec9048b95b03117f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:51Z), 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/QZK6N2113692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dbc3239210b4618492d4fce65f05e2c97cd6964ca6c56d3c78270204e2e783. 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/QZK6M2252646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dc1dee2619116ab7d50343e502126a8c044b5ed407ab4964c1604cf3b36681. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6M2252656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095416dd68b000fba04c792c5dab2f2cffe47c2c400f9f2281d72c6261371e06. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZFYY2350961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0bfbe1a27987f372ead822e05a90d5a9bd4225a79e4ff90cc5a36b5cfacffd. 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/QZDA52388485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a5c5bfac2c457d1ab2eccdb8e185ac7c679587fb816ab70b5420d7e4f182c6. 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/QZMEQ2370112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40e11dc6241ca5242d4bc9ff18f61fb24400f3b6c9acc5ca458210e1be93f3f. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZMEQ2370113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493d1091868db6924744078b3848f3ca5ed2aba1e1aec38533fd02bf6d0376cb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZMEQ2370115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53a6d2ad4c87444a12ccb0225740db9c5fe63f65485e48932650334e382c7c7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB32363181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2e3e78bb86e73e33d389b4e5cdf0a3401fd0301f4b6c8b96750a8df71e47c1. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTB92315866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a6ebccf462640d2e6ace6cbfb23e7ac9bdbd8c0e427397bc1b0c110b66b967. 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/QZZ7T2491722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441f0cf7cc12e08a6f7d592bf9b9ad1775fb22d56a2b66fdc5937c473c4aa10. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7T2491725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b8130cdfc45a4a6242cb40333cd8e51ee97464e034e8bbc5efd11d76173077. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFR2519170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e22a05b1fe91ebd7169977154dc12edb2f4397e0d5d625157c0683aa8fd57ea. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZZ7R2517119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ab1129408ac7c4e8bdaaa2792c53c48372e2d81d0ab47357695d2f6bf521b8. 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/QZTAT2429726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd293b8bd6baec3a4ccf68f8931dcfe7fbedcde69079b5e8747f746bb5ba083f. 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/QZNWV2313731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef654da8c65dcf4cdfaf3565afcbac37c41389325f6b3f5c8ef8e181b3ff04e. 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/TCAHO2308384.