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 0x73b5b7710b953b41b4781533476e990b08f540ee692ef6948c206e7e80074e79. 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/66d0e9a1-ab2c-4354-af66-af46e08422fd.json and https://artists.proofprofile.net/proofs/artist/66d0e9a1-ab2c-4354-af66-af46e08422fd.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 0x55c41ac4e2e036471727f3ccdc4c7df70dd2f951d5b37bff9e2ddd1f5fb90062. 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/QZTBF2458727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a09768eeacc1f74d7aa3daa9e6e42d735b9c3e69a87192ae50a04091a078df. 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/QZTAZ2453844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7145bd819383daaa184f7c5f4b436e3ac92d08bae33739d060ab184851ddaba. 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/QZNWU2479456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519d3be494d99a02e6592e8be93703b0c41de39a58e4d80bc249ee440c2377e7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMEQ2455052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7293792e1efee339bc9469243f1fbfd1b42e2dc373f75a6e497bd9c9f246d56e. 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/QZK6J2464913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1226c749f0a4b8167216d2989b89a26c49532c0664579351e69ff6c03eb41b. 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/QZHN92496530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc188941438064cde9bd278bce89f327d84655bd8d32753b6404ab82901bd298. 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/QZES82481830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979017fae9b07956bbcec0559734040cfe5f85ea66b173d34825ce54b8f40707. 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/QZDA42465359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe90d43484916f7d2502c45b68b39c7c76071240cc4d87e7c33b3141a1dc6294. 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/QZFYZ2492436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186062a70af566b85d6b76cee4a9b04584db7de87106fb322f6073fc0581d273. 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/QZWFG2324114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dc280d65104b01299e1a91b3babaac1e48bfcb09d63d6ab68574ee1d28c966. 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/QZTBA2399518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b955d16d988bc883da97e5e8f3d322944da873c5b9908dbed0f67073ecd7d96. 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/QZTB32378696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf2d6cfd79688a7dace240f5e743592decca659318c526678e465fc4d08c1f. 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/QZTAW2370450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60393324c2b88ed32262dc662257249d160b6c2f6cdadc8d206bfdddf7aa3b1. 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/QZMEN2336712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab625acd7f49c54ff5dd110bf1a609e27837bed0feb541a9dd4f5e1631c6a772. 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/QZK6L2346202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df7d1bdb22c1c7b7e383711e996e0edffea4d6b36fde4456c5b5220bf8e6383. 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/QZHN92300551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5d5c0541124d6b94d160aca3827eb39f8df19b73f77173c30481f0c15b361a. 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/QZES92334420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e08a58f8185d344ef796e0212b12cb773554496d7c4ab829b6c2304fa426a3. 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/QZDA62398648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f343e68e8d1cb34b6e0084b6d5c04b12cd8cd4157dff8442f3a01d99f099882. 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/QZFZ42389585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8a2e4d7eb4e8d3b6d967bc3ac5476932b60a2ae87467c9383ed0b185a0d3fb. 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/QZTBA2293279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408ff5e2c7067c2a8b387b22fd7002cef2c082be0e26a5813fc560ea886b1866. 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/QZTB42263541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f68465139dfb6b2892532ccdfc6d5703aeab31a04adba96cbe93c54f5b9492. 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/QZTAX2298956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5122e9262440d05e958c5346b2cbe1002d1f0d69e695f56a9c0e2b7694c11c2. 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/QZNWY2272118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60004f53ed7e2a6b590eb3678987cfcb22a6dc305412f6e22671621930ec0ed. 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/QZDA62252600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c8a30d5c8e8f5080f8dbab18916ec7f0601612b520d204c189312eb53d8b8. 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/QZFZ22286802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d954284326f08ea57139e7d34352085a2decd233d942349f7e5eabc02cba25. 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/QZRP52180588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89a0f0262157d70376a00224fb0f375e5546faec96510110ea15963e26e2af1. 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/QZNWY2125933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e48e754b0a9b882051b2090d9df213581b3351f9f3ce51747e73449154997. 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/QZNWQ2152409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb3c3c59f765e32d05bac6bb4201882c38d0fd7ef6783caa4ee7ad0a346b06a. 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/QZK6J2115894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e24b81c76645f3055e9c74f61b586a3c75845f60b67b2bfaa9ee6ebe8a7ccb6. 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/QZK6J2114039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182d6fc4a01c4c2b64635f4eabdc4291fed5dffac2c5e09595b531c6d93dd7f4. 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/QZHNC2171703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4cccc4f1f4419d91b16bbe57465f122ead573de523dc14283579f2499bbccf. 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/CH6542101957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcb05dc2f8e94efadbe0d6c1213ce0d3c724a4e1aa11473fcda4026a51b77cf. 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/CH6541673514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62876ee4152f9f30c94e03b5f8dc5e6f7406db8030eac0c8e837ddbf956e8081. 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/CH4196581256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44339bdd37aef51ac8e9c8029cf2b4faa3b59cf1fb8790fe9cccf2fdf85f527d. 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/CH6541650790.