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 0x6612c9a19a9eda1ce6d76f38973e9bd2ad8dc3c06dada96ff5b5eeaa031d8a4f. 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/8be335f2-bd13-40d4-bace-25531eb28ebe.json and https://artists.proofprofile.net/proofs/artist/8be335f2-bd13-40d4-bace-25531eb28ebe.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 0x120c9e5dc676a917ee87a3085657281ebb2f01f47372b33cce899a04503bba5e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLYK92400065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707d61ae0f4c035c83438d2f150d88fec2d0480b55077f5bb85d87e28a021de9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEXO12414162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fcb0a01248f06d31560cf1fc45d77249b2ca44dd2023f1c0547cf2ea2f13e0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEXW62400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6364bfd5963e77ffcc041c2de74ffa60cdbe7347152daf541476aedf65f71208. 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/NL9KQ2390281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a928641392a7a37ea397a89f459388d229d6538b28aa8df155451c48ee7eacd. 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/QMANG2298871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f1c73866e8dfd3a15c4eda5b2ef9f4de1a6c44f621a02a452962a3b2743ddd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL5WB2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d28a0361e83cbf1bee337c3ecb134a79f8d00c4c54ba6f7be49318afe1b1aac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMHM2368503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821b0647b5178207aeccd6724076464fe9a053a8eed5bc41d1220e9f6ca35be0. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/GX8LD2229467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019b841e9365d5ea0c940eb403c5dc730571f3f1d9faa9abd0a4d5a9d11058c8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZS642208103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922a5c5cd7dbb526d94f1e58198186d56e87097efb4498b56e2caa6dab8c9edc. 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/QZMEP2318607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc599e4b428ae3ffbf88ad69018375b6ef66a7ecf8c23672fc1b0a471489042f4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAJJ2560058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec694f3a501f1b3d553b371c4b4b9f506ad814d0420c8cdc5ee6828651672aa1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUS12500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff709f9f2950a6fe48945fc716680585d434f2fb3f7ce6498fb3e76afaec83c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEXO32491410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31422f8fd082fe75d6d92db54f89f0a47e854327d04dd3f7f11b1d3330179051. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX5MY2439280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89abd6e2b8168fe8997ee2f8fb107cd332762e478765f92e0ce8328c99ca0df2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEXO22499336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55fc977bc106c3ee51aff826aec7f3f669c665fe4f8d51b350557504f4f6e21. 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/GX5MY2409308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ccddccb723307352d56aa65af90d1f9da9d856ca739926694ec33eab4d5c5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEXN92495148.