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 0x4ca03936f61ba09bec756af29517f0d5291839b5f1def4b02a9a5780b83058cb. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94b637be-5d45-4136-bafb-1c6007141ab8.json and https://artists.proofprofile.net/proofs/artist/94b637be-5d45-4136-bafb-1c6007141ab8.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 0x6e954c7f54128cb1185d9c573281bc406cbeedd41fe199eca4cb257da2972714. 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/SEVJH1905703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52d848101203a887675b5001d73996047e76b0af8351330d225d2414a533ef1. 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/SEVJH1905701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991be96aad4bd8febcdb7c045815dbf73d903557ce7fcbf6f1eb3f1f6e2766c7. 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/SEVJH1905702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e954c7f54128cb1185d9c573281bc406cbeedd41fe199eca4cb257da2972714. 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/SEVJH1905703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911e5bb16a502776949d1798e874c8c24cb3e86e6e46ef1c2e6f3ca0100cb919. 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/SEVJH1905704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38718211a818df456b8bd9584d5c4c4b1fcac45a2de9e2082cb9dc5bce7cda64. 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/SEVJH1905705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaf9f92f4d830885698cbadfac75ef78619ff920e9c08a3ddf3c7e91486a135. 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/SEVJH1905706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953c2383034f682694d63604855f00961b4248625d54d07830f847fc47e0def5. 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/SEVJH1905707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ab1eb410f5a4eb065f16bba65194d9ec117c7713e8054748333ea6ceb388f6. 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/SEVJH1905708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda73053c1e3676dc1168242dc3bbcd7e9269966bdd3bd7922bbf7ace99f12282. 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/SEVJH1905709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd433451bf8df70eb0ae8fedd59934b0d08e11c4d9d7bedd8741f3724cb6e59d3. 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/SEVJH1905710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b691f81528fbc92559ba2d9e3e75caa3c320fd32e93e128c6ce0a89e8f82a68. 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/SEVJH1905711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39926fa95eb11d6b644119f0b9083a569f1646d94139a88e8fffae76ff31ec1. 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/SEVJH1905712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f4793c0d903db90dc5f165bf7aaebf955c9366030ad52e0fd6291ad7abd5b. 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/SEVJH1905713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaebf67126ba85f59f30b98fbb67b82df0cc7e351e6420ccaa2c5ce63aaaadf4. 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/SEVJH1905714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b2e5dc80ab6749cdca2515b73895ad31cab7acdd79efa83f42c5f58422f388. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:03:17Z), 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/SEVJH1905716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6547b896dfe4e405d9ac4fbee542f3dac49538b91e07ca9799bf83b87e0ccfdb. 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/SEVJH1905717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7764050c56458cf8c82cda81e831d4a208cee30eda4212b18d4da6cfbaa7ca. 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/SEVDN1200701.