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 0x009d45c144ecdb9c5442d89b0d48373596c395066f3c3f323f52a4aff095f40b. 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/08ddc7df-bc77-4a3c-ae65-ac3f2dbc8d86.json and https://artists.proofprofile.net/proofs/artist/08ddc7df-bc77-4a3c-ae65-ac3f2dbc8d86.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 0x5d47ce13db602d8ad264fb082d639ef632b1e3790e9f32a139feb18fde364eb3. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:31:33Z), 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/GBLLT2355142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5009e0efec7202c74172100cca0db1f394e62c1e190ddf0e33a85998a36243bf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLLT2355146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80012e6f41ce237ddb47b63784d671dd931f3918c446d9353b05c09367d46d14. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:37:37Z), 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/GBLLT2355147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417bdd097af31dbb4f3cf0c31908be4b248eedd985522162d43c1d497c999520. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBLLT2355149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a95480a3385b911892c67db59966b4a62211e29e86feb0a10e1d59e088766b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBLLT2355150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9591f5b57cc429035d0a1c4fccd9c83afbf22173c83e03f9db7755ba0ca5dc8d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLLT2355151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89085b5bf75c4b6bdc73b9e1dbde9467f4a5c9f4998eb8212e6075f7ece37f00. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2355152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f52e971800d590a21ab9cf2f1d7417eecb365a6a8b806aede33d12b5b83a3d4. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:51Z), 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/GBLLT2355156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccc688e74c46b40237714dc4a86d0425f260c8670b6b562432e5325164f4dfc. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:52:54Z), 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/GBLLT2355157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181721367d436936e5d9e47be411aac96b73d565c90e80ed049d9796a9057818. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/GBLLT2355158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351ff4b80fa8844d206f27cc5189ca8760d556938c872eb8a5d2db9126e42f19. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLLT2400069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bff8984719fca8cb53885285926a1c487fa1809d0ae94ebe2b7e51dccb3e80. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a03dbdc290deb3c889485434d7cab34d91024f6aedabcf3a846e5c6acba208. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2b43a4d6ebaa5c80412b5b383dc014ebc2f76385a229554c4c2f7eb36b3cb2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283081a22fd1af0e05fdee586bf8921eaed76a786b68a0ba1d62e8d4cf691646. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3669e017956dcbfa7a229df5e12e4f89a2cdb4b9ff859dadbcc3f641ffa5056. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBLLT2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1b9498da9f80b789b852b8e654b1813721c8f840efcd0679fbeb2d720b1a04. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ae150b8d45eec748a384a5fa12e8ed22ddb6278a82a1ef8dc8d3b1a24ad39c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2400386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67ca4a98cb3b7f4c4d961c5add6d660409054e17956d20ff36a9ce6c2495150. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51970953698c3af0b4b7c856d1c900c6917626aec39598cd77a5531f40f28d8a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLLT2400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445864968ab693506da12df22b826fa73b2cecf29c244bb0bf1ca95d59037754. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f8b32964fb7bc4d0d473cefffdc0ba08c62a57054cd42a89f7448ee079a03f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2400391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930b6424fac70dd2eb33b0a6e483d572b77b1261d0f1738685432b16ab7a4a2c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLLT2400393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56e124b650800e9f40006f1e428f13e203ad0652dc4f8d3fd7b6a33dc44adfc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2400394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff1e3ca55af7d99ae0d8bd1d4e36d482e8b8cbfa759e88f1a66e05bec1757a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2400398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27ff8161c3c88ff4228f044e7f30f88debd9ff637af268fd01dddc0f8fe915. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLLT2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53376ac26df576754ead1c2f1f7bf7e04d560d8a27e806e8d7f2268d92af228b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLLT2400402.