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 0xc90908df527cefefe964f526c7e96955bc55a7f32f48e701969815c85170501f. 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/ea74b894-bb0f-4d0d-9ec6-b231dc952a79.json and https://artists.proofprofile.net/proofs/artist/ea74b894-bb0f-4d0d-9ec6-b231dc952a79.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 0xb8671f9ca61873baa96d1019afcd7958877336fd2f2fff363ec178fe0396fb56. 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/INSK92401274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc47d501a85dc3d7619375f60d8b55acf03748c8ddbc13fb9e42654bafdb80c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/INSK92401217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb6ea47b8c488a150fafffe98b76395604e2796e4fa575aace1c236b41c16be. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INSK92400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2c208095de2424e5c9b932798283575d43cdae1bd653bdfbb2c0d2906e79fa. 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/INSK92400726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8fa45a6386a3655d61a967fb9c29d2b278c175d36729c1186d3b9999991d19. 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/INSK92400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10ff69d827f130dcb1e27e72ede51dbe324ff7d3410ba61fec99eb15689caa0. 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/INE662400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f98c50074334507901c92a3bbee2e3ae3f538a67ada1c03a1242031a6d8e5f. 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/INSK92400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9870824a2b24d1969173cd665af8ee253d9f7dcd03a324116d411cb889647be4. 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/INSK92400226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0429f6fb9ce85755816b8c913d7a452312a04ecc1a9fb46f6b8db249f1aa9705. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INE462200448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11acb80e31831a2b533d60f2dc06ea98a6af04d001eee5ae772f63c776b0bbe. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INE462200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e5d8cbf04d9df8821f7780c3ae6c10f46e871fbe74068a00bfc9ab7b029d4c. 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/INE462200427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7acb01a02cf0093e21b1a54b49c1880fbf93f9fb5a7892e7597de783ccf568f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/INE462200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386590308c4ef9b04aa1725463499ff57d8c0826fcd34ae6ddbc0dc6fa61278a. 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/INE462200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4eb65a6ecaea76df2d6cd4e189737a4cf7f4ae8b6bea0d5daffc65a0afab91. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INE462200362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec8606e20d15c3a9e734ec9fb5d859cfa2c69caf0a412c62611d35a4bcb363c. 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/INE462200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe673dd11e228dff13343976c80be84e1e6cc692cd286541c0a08bf61e476ec9f. 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/GX8LD2291560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427a30b0b39ca0c346bc278e16b56115a6bc244926ee8686aff20712b06d1f37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IND832213647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c16ffbca931747409224b2d83eda4f7d6a0bd49da774ce0ab1b5f5e517ab19c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IND832213406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1b7151da1016d7bfdd8c1bd04714662f99521a2b7b1dde5c68d449d02bba5a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHN92229127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12a645e075b8467b00a56ae262db2b4759e778a5578c05e7a8e12b3a17d93bf. 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/QZFZ32257225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96af31009ec3e8670e8a2677a5c48cf4e23edabd5ade50cb15e7782819fb1e08. 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/QZFYX2288180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7a98d924d430194a6bb49da99773457899a7f7147915f818cfa32000acc56b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX4R52139153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb659e9b1d45a42ef409ecc34d4974eea212f980bf9eef4d28e50910d88ceefed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX4R52125661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97eab1f39e1f6d9e80a134b324e7dcae1975d7cf085229aa7a940093b3da2e92. 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/IND832213853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca265c5b6d6256ed8a29a8f1d381078e6fa8062156dc79840cfb759cc4ca39bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/IND832213852.