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 0x772136aaee68899df3b6a51bc6e344c52f5687735cb30a75df54dba6d128a0bf. 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/540bd35c-ff8b-41b9-9c7f-eaaf595ab463.json and https://artists.proofprofile.net/proofs/artist/540bd35c-ff8b-41b9-9c7f-eaaf595ab463.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 0x1f7ed91255a5d93d55fd39c448b49892ba3b8431f18ce7f9751785d8e975e4e3. 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/TCADT1809457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169e2fe4d91865b8ec3a676cfd67b49c477ba8fb50be66e4a6169bda660d29b0. 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/QZE5S1810003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec03614c57ca317c28e81048f32ae1185e056e1e9e30794e77794b747cabdb2a. 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/QZE5S1810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47690f494f21ba5315d17eb8c4218acb10db0547774a84e8cc26fd23d2449e01. 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/QZE5S1810005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c6d5d8db8c3bdd8a36866d2745e073a4fee8124b5e5b789b03d19a7338126b. 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/QZE5S1810006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e30a6248a17033e446936f94cfc80ddeb8a9c4043569d591a9fc3b63ec1cc89. 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/QZE5S1810007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb863214ba70e5d370be04bb2f4e060c36b7a2d3b3194d05eee9b6a106300c061. 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/QZE5S1810008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48de4efac3287aeb68a1838941ce9208295a1ea5f23f271b6aef0eca4693f766. 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/QZE5S1810009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc9fe13f73618d990680988ad488ebee973762f0facea7c83c6c5e2b26be5b2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM23X1610003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca9cca0acd26c8cd165d59b6723d7c36e601bfc68c84975ec78032603588663. 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/QM23X1610004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d496941c252858a671ee50dd1c18799bfeef5341e381b5dfeef705f16719111. 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/QM23X1610005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4432d6f652fd31843a871ed80de35ede6c5e82d48c40b09fc054fdc7d02f9d25. 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/QM23X1610006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b6547018b75a2c128c5497b5b1c464b41f83b9abe24902762545707beb5f6d. 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/QM23X1610007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d5c9042d3158de535f6a4962dedea76054f864748c41dcb31c05a878bad6a8. 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/QM23X1610008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab58de8b9cbbdb87a0de185cfc37065e130790c35e0525f2f941cb144f985f10. 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/QM23X1610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a0b67fc67af4686e4407fec4b3394d4991d8dc3b42e8ee1213e8bc1b83bf09. 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/QM23X1610009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534d46708e9e8a9909a8d629da92e443e11d978d8d9f105c9766762bb0151db2. 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/QM23X1610010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82b27d3a8fbf6f54ebf38a265b4feacb261363052ff357318c3e7f6fae93d59. 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/QM23X1610011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4d20e6af8d443ce9a29cecaab2837fab282d028dbb4c4cd22e87f7f9209a11. 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/QM23X1610012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a38787cf996f2e095333ef6ec086b625f86c9e209881acf149b52bf36167b9c. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QM23X1610013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47690f494f21ba5315d17eb8c4218acb10db0547774a84e8cc26fd23d2449e01. 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/QZE5S1810005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec03614c57ca317c28e81048f32ae1185e056e1e9e30794e77794b747cabdb2a. 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/QZE5S1810004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ed91255a5d93d55fd39c448b49892ba3b8431f18ce7f9751785d8e975e4e3. 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/TCADT1809457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee23ded7a9f2adf6f5dfeb7ea1210af81b70ef207f2cfb60dc07aef3ccec906a. 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/USCGH1794384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef8a9a315df56c5738949278308f3354f6b3f20c20e9532cb5b402318d064c8. 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/TCACA1498080.