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 0xf0d5b73018d8b42c85621f4011255c58437a50a8e0998a3be076e9fbb2de4e2d. 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/93cfcd47-a70e-44af-a80f-83d98a61cf77.json and https://artists.proofprofile.net/proofs/artist/93cfcd47-a70e-44af-a80f-83d98a61cf77.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 0xa0b53280168a9f341393028862f8f5919c48c1a28d657789fe8548d6ac550784. 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/ARG991040678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47bea2b2b7a9ebd789c177db4b532efa56abdfb8143a354d071eba6f0374707. 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/ARG991040680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431fa7e838ba6c8217b62ac545a438d1b209df2ce59f6430cb91f6db002afcbe. 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/ARG991040681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa49b7bf31fa9d97564c68cbfb3048d5b3e999ec55252bba160d189fdcf182c. 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/ARG991040682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e14b5a6c1473a37de5f7b9b93dd440cd8a6e9af69b2c633877ab4f48a899c4c. 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/ARG991040684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fb9299afa68806094a79074b960ccc2a1eff3a41fc47586ce7448739499947. 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/ARG991040689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99ded3100c278fa33e0648c386631ea0a46fdc46369bc61b8259b4f3005d556. 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/ARG991040690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b255556b3ef01a1e0f2818d18d1f4c53c10a85063fa75cf8c20b85730fa04e. 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/ARG100820602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10ebcd46818a1ade9559096cc8b62a489d69aab1e72bc150bb585e3af2f29f1. 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/ARG100720591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80be8c583fe3c8c30384587fb758bc3470ac4fafa11367c6f31d4a9a1e5794c1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:15:25Z), 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/ARG991001605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6fc383a7e19c080c53af050abeb0f7cecb0ee02acaf21ee9e20c867a1bcb2. 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/ARG991001608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76055db3341bb0bd9d15ab4a667b9993652c885b95124f3e16bed0da42b7d18f. 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/ARG991001609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab24e51080f3a3223a233c3146375c8227b70309613aba6791b2dd987c91af7. 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/ARG991001610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95581736de775e4879e7a1bfb4346f3e11f63d3c9993620c43cfd6f6dd84769. 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/ARG991001611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe1ff27cee30373ab8138c1f065dfea2aca0e791c02789f260abffe642cc981. 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/ARG991001612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa963e0eca8ba78416e53ab3840bc35ae233357e1912ac6c62f6debdfcbfbfa. 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/ARG991001613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417bbb9b3e7923786fa8826650df773d10d6557ed51568280e2e260ba9330398. 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/ARG991001614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23285d10aa9f42becaa0557e19738834686e045f5865114102c42c8a20564abb. 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/ARG991001615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c6c96e352b037b0d625ef4e180df4b2635f794436dc8ce647550f88301df91. 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/ARG991023768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bc1a9222b0f8d856bc2ccb38549033ed4d75f82b7ce87849d63fae4df31a35. 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/ARG991023769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9126d48f6d0a51ced9a589b77840971f47dfd1cc034abf31bb20b4d519111e01. 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/ARG991023770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a95b58b0c0f2be38d3f202c37b7fd352f39500448c523ca9854ccb68826b0ac. 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/ARG991023771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da1770cfd37c20b7309ffdafd1140fc73713d84f9dae7f0b4bd5892ec3a403f. 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/ARG991023772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59531c7490611954ef6a409f23db1a5f19358be258b9af0edda0253191dbf8a. 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/ARG991023773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf44a92c0fb00b1b4c438cd69fdd2b064b5d24734002658e7b5542ff6325386. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ARG991023774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd77b080d73c32f95dd791385278df2fe2bcaf62ff3f21e9338dea27b47baf5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:45:41Z), 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/ARG991023775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3409da282b8d869dfe51c0c65e90651840722a9b58ea819abb26b3317ad80434. 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/ARG991023776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068d2fd06d21ca9d572ea5a0cbe70b4bc7ab658b1a80746bae9f7f3d41f55846. 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/ARG991023778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9505ab094ec6f9f7bd2a024ceadf4d9e3a3c791da7486e2f523198c2538c55. 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/ARG991023780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab29e9af99a64d0d1368ed0e5facedd3939e6d96c820ae1cd14f2fa3ab3e7251. 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/ARG991023781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf6a0af3f22ce59206d6da06be4ddffeb5b8f6da344cfc0257eb4febda4f7c1. 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/ARG991020683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf6a0af3f22ce59206d6da06be4ddffeb5b8f6da344cfc0257eb4febda4f7c1. 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/ARG991020683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44e7d70f1d09aefe10de30fad152f928bedd51dc08704d1f29475577d38218f. 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/ARG991035669.