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 0x58354c397ef4e3f29842c8d8d641cfcdb3cdd4e609d9c2523ebb0beaa0c0721f. 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/3b83cbb6-6240-4c3b-a9d4-0de3f569d4ab.json and https://artists.proofprofile.net/proofs/artist/3b83cbb6-6240-4c3b-a9d4-0de3f569d4ab.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 0xebe18f677697c35a587c1474c07c96c3d1836d801886d6fea341d231c3f32fb9. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:02:39Z), 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/QZTB52241596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf582d50cc522c2d4887a45252cf50f8a8ac5b6ea501ca0e2a4d2ce94dd7d1701. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZES52339452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbed303524c94c5849e5e7ed96c3d0f673446e71b9c6861c9695da7072d788a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2356169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aae05b6c5b59b19a5c64dc41d0fa80444eaafc11f5586c70e6320b55145757. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6F2318761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ec4f2ffb32b5a02eb4325af650a3e250ec33c82351897c6ab4865ca43e8863. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/QZMER2364574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c81c83824c1435af1795664dd6f59daec9893c3c1dec5feed054104de0d9d4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZTAX2331679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc06730ab74a17179814c02c2aab5bdec62f9e7ce8ecdf73d8db559e0b66a05. 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/QZDA72348815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade209459b311352d8a1df89bc7d73f1d4b2cbe89c800aa5800ce4374dcc4355. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFJ2373625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece55131deec3f3bfcabd96a7eb2599d3f89c5b250474bfe800ddb53eeaa4c1d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:17Z), 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/QZHNA2484742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d1c3a879a53803597d348ece9cef2f9bf9a7c6343cde4ffc029915fb5b9916. 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/QZK6J2445941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0b042b80d3ab85f2e94cf66069838330b682e0bf5785366bc197a9d8c1d290. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:45Z), 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/QZMEP2463678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099fd0261bb1b6361a9472cfe6997c3160733ef8c415f964b678b70d25c030a1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNWR2485517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0f7eee57f04b6b6dc516a7b3d7a2a593b7e717e985913e75d3425dfb71db25. 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/QZTB92489491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ca008e7c39801134bb3ebacaaa6d7dc9e773174482ea84b515dfd8f4bd2881. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:20Z), 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/QZZ7W2412765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e94339f8668f398b530d0a50b6611e0bea25e05eb778475141d8c84f492d423. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFH2509555.