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 0xbe7e97f6bbc4580576adac8643f3fbc16d32e92081be42b12dba9cb9fa4be608. 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/732f7d1c-2af0-4394-ab8f-f941cb08bdeb.json and https://artists.proofprofile.net/proofs/artist/732f7d1c-2af0-4394-ab8f-f941cb08bdeb.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 0x682ef048e3f6274b4b52e5a891f2637f66d94f8b7ae7b4abed0c03fff1e979fc. 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/CA5KR2278877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1875749b2135353fee1655b7ad783c6a372ef1514be80c1efca4d35653d8494b. 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/CA5KR2278879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5fc4fb48928aa11375791884af57a3d588a5f11f6340851a8aff917a7ab9b7. 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/CA5KR2252792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0758df0b674e8d0221dbdd70f636ebbad92114f764ec76f9b8eb58094c0cbe10. 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/GBKQU2219284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771fd8e4c8ebbf919e1d6945a73a3e1e622a641079f3ea2c0eaf0ac63bebd0f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US83Z2210922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcc68721322eae41cef588774f6b299af8476c9de84738b77b99bfa42d8d037. 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/GBLV62132986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf89831c72cbad3517d8c03d309f29a136cf42bc7dc1b79f2e5e606fd8da560e. 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/CA5KR2252793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75e8ed81404546cdd78c24391646f9b4fed962436172a18a2bb399d28361c27. 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/GBKQU2538605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9544997d554626227c17bcbfb861e88def724573778dc36706ed836578d9a27d. 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/GBKQU2534970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282af5fc29ddbce8780ea67509e840e74da0eea4e578bffa7e6dd6a93929a854. 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/GBKQU2522809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1399f119da20d833c09306a6614b9eeb519028d0ff472ef32757d5700dcbf06. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKQU2456431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b2c3abc14e048e2032a33d608e53df0076f9b8fb6ec151f768245d217fe08. 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/GBKQU2432601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc92a3a48db7d44959242147473c02f1e4fcf36f66d7c7da265dd690c666347. 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/NL8RL2408749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376268c8e71e65057fc44c8f280455cdc0d71bf2aead7d74e8cba1ff15a5a65d. 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/GBKQU2416963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc24ff298bd41e109555709a6ca9feebb3e5e05f1b137abc69b27d47c7a1776. 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/GBKQU2407719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2703fa089c6fe552c9c0157a31328d786cea4c46ca5f62bd3a5e09ee042fef35. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFPL2100488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51bdda6524aa8a456f324ea4f82a5283c0d8a1de86caf9a971925029591cfeb. 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/QZFPL2100443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f035834aafc8c295dcf7bc1598b4b5b4f1656352fa3633c1a1fbb9a4ff63a7. 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/GBKQU2341247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe346c8a418867a54c4af7f0b5d6d3a69242e37a13c625e6fe93b41bac7b1940. 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/QM6N22327869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a60cd7109d1e352162ccc689577b42d9deb753cbcf892997166c178747e24b. 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/QZFPL2100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663df4e2697848bb010f0e263e35c96b49cb661789a458d3d980d27484f1d5c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBTDG1302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610fbc423f432ccab02f60bf541dd4387d2583c746763455d2586eff98ea0528. 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/GBKQU2262959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685056e258c28a391d4a53afcdf93f9250f7d4e5893d6f6bd5479c5bfaf5924. 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/CA5KR2252790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bb85f0bea09a4d960503a7a1a25a7b26cf2256973e295fa28f6e62417ce12f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2252791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6f31d30376f00b881ac76a1aa4cb16d3bca55931473efd2618e310032705d. 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/GBKQU2248849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71568d97e9f19e91f13120c6f93302f0954ab2ee6b2bf3e26b6ac0a292bec5. 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/CA5KR2210309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5592f5369194ead832d64299230a321addefd0f45c1cbed5453dc0d8b4fd9631. 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/CA5KR2197199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cdd763ad2805862119e4c8e668d5a9ae2f0e6bbd17a457723651df50faaf49. 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/USLD91734754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9391f87d724197b67110ee0167b03f630cff260d5facec0fee0e68e43499f2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91734755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfb6f937420481d09bc0194d5a56caf4704cdb7cbb89366ebe1dcf8f9600e14. 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/FRX282101932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cc133eb8fe9713a9c52e46c3b9b9862dfa691979787b5971f73dcd99d63640. 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/CA5KR2148288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba2068c09f413c20a5ad46abe7c28c789e9a9addb230963fb223669c397c12e. 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/NLRD52264048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee6f31d30376f00b881ac76a1aa4cb16d3bca55931473efd2618e310032705d. 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/GBKQU2248849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b71568d97e9f19e91f13120c6f93302f0954ab2ee6b2bf3e26b6ac0a292bec5. 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/CA5KR2210309.