1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6238aed81e8f4e051c0f1f5aea3ab24eb35999667af430aaa4ff133487b6cc68. 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/ad4e3dfa-8b40-4a81-bf70-6ea0bf04e5a2.json and https://artists.proofprofile.net/proofs/artist/ad4e3dfa-8b40-4a81-bf70-6ea0bf04e5a2.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 → block OTSBitcoinBlock must exist at that height 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 0xf413cda72eb4124ea4db3736499e8aefbf66b417e13dcfe53854b849728b8cd4. 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/QZK6L2248916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd55eeeaef30ca214e510ceebc67a8f1cba94fa8169c78a82a4319a391cb176c. 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/QZK6L2248921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6843e1522f33c3ce395cbe77ce49082fcf0d0d891baa99cd82dbec2f6406dad6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZK6L2248917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055feb94246dbe27d7e9c74d069085d94bc0efeb620a1ae20c20adc26ce48ce8. 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/QZK6L2248918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2599ebfbd53974c2f28f3b8e06dd78785541f2bf33839b43941666d3e4d36b8. 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/QZK6L2263770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d84c62a218a230ac09078eebaaeb6d11da681365d42b34a93c50d441573984. 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/QZK6L2248922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9de2924cfcad56ae8156c4fa10076e9cd1883e5b6f62e1be363c729a6460e5e. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6H2292338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac97fc69e5b88392c182d711d158c8b4a9349b33ec19a874e0543e7bd97e3a. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZK6H2292340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf499c8c7a03cb416b910f0029f001ef6f30d227dd200cfc376b67e126c4c8f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES52334962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f0093b435e39f95105e1633a2e24e5ce6655eac0483b923af9886a3514bce. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZES52334968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6983fb347d761fdd8aa518e8ebdab8d97c4b045d20b94f2d50cc8a1130aa70e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZTAY2384714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d515670bb7f040ddb887cd67dd6042471f777c50a3715529fe83a66101124a9. 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/QZTAY2384715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe008d7d8f06a0f8b3e00f9867fa15e584a59106af378f0008e8a4561a2a6afa4. 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/QZTAY2384716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed9d2a038b9fd63aa85f2b4f08e22c1ac34f6e463c2673837c2b8d9cdecbef2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAY2384717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5dfff7b006553d67bc869e3ee1a0c9dd0fb538fea863af54506dff82ef8de4. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZTAY2384718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a7bd434ca9729505374b1698fd0707daf5d6d9737baa604ce0a45773d1998. 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/QZTAY2384719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353c0a0378a30a513a81e68fa5ea323f927b3936abf79481a490d21b6b202149. 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/QZTAY2384720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0f4a29f92c7bf8338318ee5621d75138fffca88d429bb660ece0e6a66bb097. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZTAY2384721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6983fb347d761fdd8aa518e8ebdab8d97c4b045d20b94f2d50cc8a1130aa70e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAY2384714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe008d7d8f06a0f8b3e00f9867fa15e584a59106af378f0008e8a4561a2a6afa4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTAY2384716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed9d2a038b9fd63aa85f2b4f08e22c1ac34f6e463c2673837c2b8d9cdecbef2. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTAY2384717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a7bd434ca9729505374b1698fd0707daf5d6d9737baa604ce0a45773d1998. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAY2384719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353c0a0378a30a513a81e68fa5ea323f927b3936abf79481a490d21b6b202149. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAY2384720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3598dea98dd2644cdddc545bd807427efc287f30669e40165ca3cea6c2f89d4b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZES52481891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06035bfa164c9b87c553071ed1d2135fcc683af276a0252e8b7817d46fc36fa6. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFF2415516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda5cca13f60be2bd92835a2833f1c2d4fe591e1119c0dd273400869b08ee85b. 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/QZWFF2415522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf413cda72eb4124ea4db3736499e8aefbf66b417e13dcfe53854b849728b8cd4. 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/QZK6L2248916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866ae0a674624eaff1c857b71875b6eaa0007702c58d8694a211d40a2ecf8cf4. 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/QZK6L2248923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc738a600633ba85d1dfa613a976964d016c906b6f0a5400d5985847cf014496. 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/QZK6L2248919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2599ebfbd53974c2f28f3b8e06dd78785541f2bf33839b43941666d3e4d36b8. 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/QZK6L2263770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf499c8c7a03cb416b910f0029f001ef6f30d227dd200cfc376b67e126c4c8f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES52334962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122f0093b435e39f95105e1633a2e24e5ce6655eac0483b923af9886a3514bce. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZES52334968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6378eed6833be3952e94528d10197f2208dfed3cf142c94bfd25ba65c81470c4. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZES52334971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3598dea98dd2644cdddc545bd807427efc287f30669e40165ca3cea6c2f89d4b. 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/QZES52481891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d349c9ef959133cd35cb0bbaab399084f49bcc217e5627b767aa766a9140e. 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/QZNWZ2479752.