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 0x3d53e314a7d9bbe9ad8c4e60c70e2d0e9738ea79eb9284ffffaee6403ac27671. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84c78446-74f8-4df6-bc4e-e31f493353d6.json and https://artists.proofprofile.net/proofs/artist/84c78446-74f8-4df6-bc4e-e31f493353d6.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 0x996c4728a6944edfceec32627397402cf0d410137ff0e7321bdcdb975d82e037. 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/USCGH2030370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b806b2556692b91209aff75943b7ea5f0df1fa0e4e85d9e309335ee28a3c8b9. 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/USHM21964285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae42c88a382d055a9b2c54456487f155b3b421979ece56cae3e1cfdcd3ad48d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USHM21964287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3586912aa73902788c6e997f2f8b54f5d2ad35245b86f1a213c21073e67be003. 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/USHM21964291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd956367203f31138da7be75380faffc2734120c5e46d3f038acd76f2dc2ad3. 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/USHM21964292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d849e3f634f16d5a819d4b191261bd01a82d53fc3c5099926931c7cc925b82b. 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/USHM21964294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e236fe2e8e5b45dd700b6abb7ba21b293b0c20cbd04b716f6c60ab0329c2d1f. 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/USHM21964296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540f38b5df5ecd0962a68b17a7631c80ecbb7fbc2549b022c06b146ae7b82f0d. 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/USHM21964298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fffeedfeca924d27a0bb8ad2aea8593ebacf77c36269d3010026c98d3691cbb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USHM21964299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08163dfeeb1aa07d3c6d7e3c33dcbde71a4e5355b4104ec52147a1a3c8fbfc47. 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/USHM21964300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf775d4fe0e27578ebf4d0eeac56f8dbc92a79c20fbf25eda850d7b301c0c1817. 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/USHM21964301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf835448bf161ec804b02ce62f53f1c96857bd17eaa0699bf6ca3c85e5cf26ac8. 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/USHM21964302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc352c8111ddbf7c68c75be4616b594c07161ff020fc0dc62a7f44c0ec7074d. 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/USHM21964303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64544e135b58a6404b06272d6aa4e56556a999f26b653af493efefc36f4a635. 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/USHM21964304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1533a9d9a92717589e201df6e47b3a4076c251099e181e9de3e1363377faded4. 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/USHM21964305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eaec568c511cddf373bce2c6bc1af3972f3ee3c8b61c013e2fd9ceccc55682. 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/USHM21964307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023d4510c0f3a2b1b077f7c4eca3d3b8888e6b862a7272aaf793fad4e2c8adeb. 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/USHM21964308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcd5b585d1a78e08ed4f07b98d4b74e5fa4d5655c948c78d596c37c7af56673. 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/USL4R2347594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633a4f3794981fee2e0f74852f303810335259803c5ec138b5f6d5d1d2ed23dd. 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/USHM92015666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4816a86512d52a5cbf759724041f9da31a990daaa47b5b212bf7176703946308. 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/USHM81962951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2a99f8b285c11d25791355add717c3b3a0b29c1c8127970b53202e4aedbdd7. 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/USL4Q2195695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f3b9494554f3cb5f7d39395f588e937893163462a71f0050eaad21461254a3. 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/USCGJ2259503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5087b905368d09ad863ae08029b09e601bfc78a797f31c7a6cb4cd75e7f6e7bb. 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/USL4R2035428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd17a46fcc260670f42c718fd96c7352f8a3ce21d6c350ade78e634e3e4f78. 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/USCGJ2099122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473b492b228a89ba48330be77cc08ed3fdd2990a8dd689c4a52baed192922745. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USCGJ2099001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300a9a4105569bac72af5e2fc17a56843b2ffca9a14c6ac308f2521552efbbc9. 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/USCGJ2084367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6e22d3fa3275ad9921b16e8a0a3a48dde4f1c916fd0fb9dacc19c88946e9b5. 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/USL4Q1955945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b1d82cd00b04866cb7c5f0aba821fb630d4fd9614d2818e537ebbc1e68c019. 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/USL4Q2109104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd957a10fe54bb54d5d880146ade8a2282804062207b925f764935bb09090788. 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/USCGJ2259502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e550c1335b35a4d555a5ccd26a7cf165257bdd5058591cf653e94645569209. 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/USHM92277375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36e1cbdfe5b8be1cbc14698ffad003622a666d5b113979b05a3af707783a538. 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/USCGH2030985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e410b7e4e4658b523cdc23e401759c66847da876aec587d3829b2a9899abae8. 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/USHM82107030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7302670b111136528d18c8550f803ecc28ba920f0400a3b55362cc7e6d14bc. 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/USHM82057040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e5aba29ca3369e51687b542c823bfee7b6be7267d664bdd3167d452ec52407. 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/USDY42163378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc830ef8dc3731f3a5223075dc352f2cd73b9f9beaa0e7af06a2c8676ad32271c. 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/USCGH2075960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f36f8ace70077a5131a27ab72b44d3fc2adb270c53c95d6d0f0214da21f7e3d. 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/USHM22186973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bc2fa6ded466b82ba5123e89889e9aca57f7204dad2529cfe65b24de96a5f2. 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/USL4R2202207.