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 0x5dd1d24e3ea828d0adaef9dcdc4e6118a845cea850e9fb4399f5c17dcf1757c7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c811c56-f703-4163-84e4-cbe514a0511a.json and https://artists.proofprofile.net/proofs/artist/7c811c56-f703-4163-84e4-cbe514a0511a.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 0x01eef6a4c9db976d68fb94dc0f45248865b5f0df3b75ce47dd8d1ddb4b1d26dd. 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/UK34N1800721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebcfef8df1d18448598c16251b84d5b3a2b4a8b3b8856dd0a09344d5d1b3805. 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/UK34N1800723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda312bae743607ffb38551b26e8c680c9ef73ef1b08ab38ecce54e9139fa53cd. 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/FRDKW2313771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb4687bd9162cbd90801c9de0842a3535a6431b70d79b7a9977448a07b31fd5. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:32:52Z), 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/UK34N1800825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299203a06e9d5256e59c0d9a00619a5e4b5398555cc39cacae24f5676d41d014. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UK34N1800826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afa9d5f987384154e41eb6e4de751e6645ac5bc9cf3578e9e8e205df11b9ed9. 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/UK34N1800827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d627d13ecb905dff2a4264e9e2a9f1ec31bf37b65236d533c63bf7e4c8b0a2. 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/UK34N1800828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a5de323cbb7526aad038e4fc09fdc9ed5e2263e2ec989a7564d50b10a9a626. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:30:55Z), 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/NLL562302347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca923b6f2554df50a612bbfe6a8998059989420fd20d1364cdd192be91198d8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/NLL562302348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c26d69d232915664c259a158fd814a728fcf77c9d1571e638c6b7646f4c796. 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/NLL562503542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda312bae743607ffb38551b26e8c680c9ef73ef1b08ab38ecce54e9139fa53cd. 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/FRDKW2313771.