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 0xa2b99281ff0a3f82e37f27795c0455430ce1e994cddf07eee8bec3a9f69e2a6c. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3ae34206-7de8-447f-9298-f0f591e307cc.json and https://artists.proofprofile.net/proofs/artist/3ae34206-7de8-447f-9298-f0f591e307cc.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 0x69ae3085d0e9bf62c05d4dcd88bdb180907f75398198ee4667240b113bfab537. 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/QZFZ42081939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb66bc87eefa1ca88b443f0d48d8653167b329bfa2efe8c6cd499d10b0871400. 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/QZES82001830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa218adfe2eaf287447a520bcd630c40fb56100c26b17a89d56e9b3a822656e49. 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/QZFYY2106836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54268301a3b2ceee9d880054b9112e7fd8b699575d931d6fab1c2ef469287df. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZK6Q2122085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6741762659f095244d5aaa259a3cd2ad45c8c3c05c8790f89f436d4b56bb2cb1. 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/QZNWX2161337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad274a830a2af0e2d6d7f41c112deea47153f28b1f2845c88feb9b44e63883a7. 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/QZRP42109211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067123b67a4a3f5ff757d58d8134cf56db4b02e969f243984ff2f56327a0cd8. 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/QZFZ22234721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e77a6cef2855599e3a3ba47b854ed7d097d1159612346053fc921b096ccf81. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZDA62235801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a1f947f168d0fd80223e0d8c3e6190b1c1211cd7cd1e662367e59f7b5789ce. 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/QZK6H2285220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93af35637efa96bb8b5b90db222ffe78fc33c13c2f6c7d7a1e3067e826fb9cad. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:54:47Z), 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/QZK6H2285225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077e6e10b336ec45c9b86ce25e943f6337b2c1d20fd9b22f5949a230ba6830ab. 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/QZTAU2249343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b28e8f14b81517d543d326dcddbedc164116aa03f44591c25cca9ad0761472. 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/QZHN32366696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c598326f2346b6442f783fb1636b57e8544165c22221943bcdf46a8ce8c9a6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN32366697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09965904096a578ad6bbde55b3b679d5ec6b778e2490f1e7485315c41c6ecd6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN32366698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a00f539bc14c0b9c6f8c410b9d226274fbf99f6ee3235f242a8e8ddbe5d5b0. 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/QZHN32366699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2943ccf1781cdeca35fb1d4c21f1170ac73fba9a4ed1a601066ea4ef21beed93. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:03:40Z), 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/QZHN32366700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f3e6e2f327cfbb75e0bfb024461efcf101bb4b3e64bbcfdee96b61deb946bb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN32366701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e44fd4f0a3b14f006afb7ef3bce9c3785d1b10fa53f9d4cbe6f96f7c2d1579. 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/QZK6P2392933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d82f63c7b04b559089f00847aa8f16055dc322d36a41cf09e4bca6e227ffefa. 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/QZK6N2318738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46334f53d95660851061fd14c4601e17beb815c50d0d7dda21bf720ce66911d5. 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/QZK6N2318736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8565ad537ac71c8d489640d29251bf34add712cfc7682dc6a2a0b5b776c6e2. 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/QZK6N2316918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde158610ef4feec64bc6870a841aec8b3f6c96896f48160c5a984ba28c298e0. 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/QZMEM2314670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc585c99f26b79daebf646916bc7305d3b7636ee88726fc367d9be07c2793f407. 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/QZMEQ2365571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0244d28941af1e8d963d19e37765e5329849cc5ebfb0d77e3eeb8207674ca623. 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/QZWFF2375015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7a336b1f018c4abf156d86997f5355c65e073b8ba2fb865155359fa18343d6. 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/QZWFL2356643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13807e2b4dd918c0dcbb45bdb2cf0bbd3291db360506bfb717f17d88e2d90466. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:07Z), 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/QZWFL2363743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600945f6f27c1bb36c79bffd66ce4dee3ccbe80ac23cd165a1a3ef184cea1c8d. 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/QZWFQ2348098.