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 0xb3d433dd68c0bec0d7b0413a2e52ed64f4798613d19f4aa0a6fc20ad313503c1. 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/9a0dc1ec-91ae-460c-b1a8-18919ea29cbf.json and https://artists.proofprofile.net/proofs/artist/9a0dc1ec-91ae-460c-b1a8-18919ea29cbf.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 0x0413b94e468ade28e602e922926a5d18d350e50eb5d8fe789b442fdf4dade1f9. 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/QZMEM2490704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058fb1984ade8e1c3086452ba99a299a23cc30e1ea56b846e483d720b1e03f34. 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/QZMEM2491177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b55fa48ccf704600169f5c0b9da35e80661c5d88eb78e85260923877a69503. 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/QZK6H2443115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0d24dc22677dd41c04f61da2a5870c7051e33bc95d02e7b362fc0cc350299d. 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/QZK6J2481003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3deae07a82cd5912d32574a30b78670efce95501eb1fda9014ec45bc63c516. 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/QZK6J2480827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a25ad910d7cd2c7b95d8fdf30bd4acd23deb9dee4456827deb23181e63d6e2. 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/QZES62404859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dab04613bbe092958ed27883355c001ecbba29b284d342744134a86fe6cb584. 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/QZES62404858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8074825afffb103484cdb96ade5f2266d3b191edab4f3caaeb075cc34b5da09. 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/QZES62403306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffa26d317e70634501a8cca70c866046d223439b4729b3c3448b0ba2e1164bc. 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/QZDA72465200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5851c0eefd839efa9a56d6d0ce3635b93b684e3c54e7b8b4489eaa03be7a139. 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/QZDA72463350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c9c13eb1100f574cf5c8d9ee168781757a9acf0d85b8ce2ea9f1da3b3ae50. 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/QZDA72463335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d8fae4c29943c131c2f8a673a02a77f243dcec3ef7964022605e544bd63022. 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/QZDA62466968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc6e52948db61885e00c3e5cdb63b0a0e764c9aa6431a9fc1eab05eb192af53. 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/QZDA62467012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbe4a6e2dec772f0fcff480c52714d8d1bcf3f6ffdf506654b3701cea10b86e. 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/QZFZ72484289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28615187882d4c93fc420cfd45960c16fbd798e7771d362eb930377f18d1e0d2. 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/QZFZ72415044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8917c908788d52ef617898d366d8bd9de49b27cae918b84e8eb7b751e4a377d6. 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/QZFZ62498900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aeecb575334038395b0b0081cc8183888c0fba863883e55125e6341530d15f. 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/QZFZ62462894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da754a902bddcd7f1d6ea74df96fd37ee3655673aa29c032bbfa14726012dc6. 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/QZFZ62401490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b528fd5cdfecf1986a9d992e012f05e08ea877a39e967e62745a04b146efc08. 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/QZFZ42484462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345e72cf3cc7b3d3707741384494a1b18efe7af31f4b2cb2347ef0c79f9d8c38. 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/QZFZ42430732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827cef825b70c90f918400856aa05b95cbf3b214f05d9a8b5a11d0e658d3189f. 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/QZK6P2386762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36824034edc2b18589e48bb580c73322591570d7686bd9f70290516db0b4aef4. 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/QZK6P2354826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b44b2ef02773461f2877b5cc1edf083fb092306384c6da702428b576165f9b8. 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/QZK6P2371183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086cf4c1ae130cf5ca72b1a87073a6f26b6d6b5010da332e4fe640d8dcff3988. 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/QZK6P2312106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d6d3e7aac4e18bd97c984020622fc0edcf709117596435fab4cb0e0f20938a. 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/QZK6Q2378598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5d9dd5fda81ab3263f38a25e9593e7051e67f82f82a850888a61a32679bd6. 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/QZK6Q2348325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e42c4e3ed1e9b916e638437727073f92f675718068c6a67ccb7814212738b1d. 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/QZHNB2389504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21c3e73658c881ea285ca82d2f8dcc6390ac77df3387cca1f9041bab77eb6d1. 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/QZHNB2362287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d60046d84b6cc2dd8564a39c1f60383857c245ebadbda8880a8db2e6e443a0. 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/QZHNB2347070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610e7ded98962fc48619126d15cbf255328dafd13c3c94a1683b59c64aa61e6c. 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/QZHNA2398335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbc1c29022a9026e4ccf958b6ff32d4ff2060b136229cfb0cb2001ca7bae096. 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/QZHN92382408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5da75dee5497041b783b4a6543a265a24030a74631dbf66bae4c7776c7b35e. 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/QZHN92381035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35633825e77cc2b6f7420d40a810df760c86c344d5485f537c9df4550ca55b99. 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/QZFZ62376827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5563384144a0010bf7fdbd8a733a762d11773efdd445d40f0927960b2b5cb295. 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/QZFZ62315464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd733e09e7401f42da6f4aaee01a820f5a4332213a309135f8931dc2463270d06. 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/QZFYX2335465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b682ff2f28e73bf53bebe63811112f43f1304dca9853ca41e5e196ccec9ddb. 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/QZFYX2334612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f33f1fa52ae7a8046ca59a7b753569202df5daa89d8149c2b5491029d8eb370. 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/QZFYX2306963.