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 0x20122bbeebe0d19f1aa7b76dfb753b5fafa00fd324ca97fbe862b0ef60aacead. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60d64c23-a6ea-4d9b-b22c-7939e1205a3b.json and https://artists.proofprofile.net/proofs/artist/60d64c23-a6ea-4d9b-b22c-7939e1205a3b.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 0xcd85dae0b29eff669b01375c5af21fe130d721c5334d324781e155fb2984dd2b. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/ES94G2303506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b6a7e8d73f4829aa4ac9275ea7da97a4f3563d290b4a84183e367daeae3fd6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2209175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e33de639569fcb56b34e99cf562edd2b10446a0555efb2c4df94959f9c1dc08. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2209177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f6ceaa8e8527e3ebaa73183e96434afb040d0d83ec30e345f94d144731314f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41073439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa3e65b572d168974562f476911aeaeb735d3de5e9e9036c96394bc4eae2d6b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLCK41073440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c38b6892fe7591b60226dff77d77a34f9a695f186ef066bb40c1e8e8d42b92. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2031100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37edbdd49b4ace42f69446b0ae845be0c9c2aa05256f8bc412d146e42d531a7e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBKQU2031101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da38baa0176e6dfc31e9acf438d9c3d89b07fffd14520d43056f5d4be34d72b. 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/GBKQU2031102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7de9fbdb02adc63c741f0db9f338e5684bb3fc63da198bfd7325eaf8f067fa. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2031103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ed25e535266f38a30ee54052fd86310c4495da15f50dd77a43379063ae637c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU1980182.