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 0x43d80b2a359dbf503513a74f49a795918eeb1af9c0359a7a7042dbae93eb1544. 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/709644ff-df09-402c-93c5-8acc8e10bb8c.json and https://artists.proofprofile.net/proofs/artist/709644ff-df09-402c-93c5-8acc8e10bb8c.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 0x851caa52039b8fa747578de08004094ddddf6cd11563100ff327dd633d66bbd6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:48Z), 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/QZES52146842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21e72ad2941a0fcbf19ea853c1184b8303acae489a8460da9378f87a3384bc. 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/QZK6F2179490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee460677eed2e70662b6460839dedbe6435ebc8108822ac3f35d48e46c32579. 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/QZMEQ2131916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5530fe28b42aa666904af0a20653c34bd15f2fcb08977f0b3528368a7ba0aba9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:25Z), 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/QZTAS2191341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad21e72ad2941a0fcbf19ea853c1184b8303acae489a8460da9378f87a3384bc. 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/QZK6F2179490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aea94defb480587cbfd508fc37e2bddedcd741cbaa31a38d8592680af932f65. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZK6N2279536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c236e767414566f516b9135c1fdfe3cdd33be522c01d03e51e211c198ac93ed. 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/QZNWZ2341685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fe8e65d226446171f0f4f1415d5900947a7b073b5227a9e8f5cbfb919961c5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:08Z), 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/QZNWZ2356152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf064f2afbcdf3e019eaadb3c7ad21176c58760676244ed0ebbef9e5999b3a11b. 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/QZZ7L2446660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06f067f650e0671a76466a76441572bc29624c75e594958e60fd85dd444fb16. 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/QT3EZ2435520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc2b9e3d4801fa8f2f438f24f8877ab53f895ea8587b1bd2fefb260de8fcabf. 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/QZDA42511028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4060a03a7ac0805f78475799a06a1a4a2e028a01e8adc9bd08ea48463d3e42b3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA42512536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0683ec64cc80a61de0153cc4a0ab4dd1e54cb826d1fbf795f23cf0b76965d481. 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/QZDA42509295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca5908e47b5742982822ed86479d491b55c4e2720f29d7061e437448985eec6. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZDA42515082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240f855bd8c1c869331c8556f6eb4fd05b10ad89a1c018ba1944f12711a16b64. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:56:08Z), 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/QZHN92597754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf243af966286722fd97f8c087b687cb2d6c9005c9b6560ae96d52ad2a0a68079. 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/QZQAY2579629.