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 0x3c776910761efe92fc33d86454af581fedd0bd5064840dcd0b51df7c2dfbceec. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3836d736-e2b0-4e54-856c-20e3d32035d0.json and https://artists.proofprofile.net/proofs/artist/3836d736-e2b0-4e54-856c-20e3d32035d0.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 0xef4d2162f7dae4c28f12caca3bf0a57be4cf98494fab1e14a64a12ccf93bd675. 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/QZRPB2159070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851760be6fde80f0f8632fb38a56e597484c78036de2366e5ebe361895f19467. 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/QZHN62033292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf798336cfb576f7a60fd7fadea45a4e85f4b94f0db191c684a2f95e8279181d0. 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/QZTH92227174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff57b6d233bcb25df9788627b1ec8e445e48ada436bf61c87f03abe2772f9bdc. 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/QZTH82112464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8f502fc210b0a04007075d7a3fcf7f730636c59d1e2ce22a88a2efa78024b7. 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/QZT852146340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed9adf12b7fd8c7bf8ee1ed1663e246fae39d44e6472d8a4c3cebe60613bdff. 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/QZTH92227178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f06e69f659575ebf5aebcec85c054971db84bd2605fa0041067e86cae0bba7. 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/QZTH92227179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711b87403dec7bea473a6facb0449c0c78207d58088a97748b424b983d2526e8. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZJRB2196323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac63b93e128bc8b5f99bc1c2e106fa17df1096349b53597019d9cd468b0a1da. 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/QZTH92223923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549f7962ce03667626447d930f33fe4850cdb22bde0e336fc8da4e3fed960079. 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/QZTH92227189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138c6617f9c156bb01502b12d18e57779afe87b55d4299a60316c44cbd1931f9. 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/QZNRS2003292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe56278eb9216e3416408a22457983cc5f51d8da82f5c832890904a7f71ab444. 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/QZNRS2003298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99d0ab4bf20851161f5efb134506967c9705e487a6f69f43b82ea2542665d80. 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/QZNRS2003322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7616eff6c85fe728806ad1667f29cf2eacfa81962a371480ad84eb2b438a8372. 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/QZNRS2003325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62dcaea4e7c39b3a560e242ad8683f2ba91f5ebcc3d213e8eb80e94e366cb13. 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/QZNRS2003331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff236c463e50efdddc2d3f8fc8c3d7e5ddfcad7781f4f6c4aec38a262be15f33. 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/QZNRS2003337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cefc48c6df937dbaec42e3ca0859d15ba4ed194dd5b15e1990edf5802fbcd08. 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/QZJRC2031018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff6c1a98367e6c6da730eb4308d0a051679e3053392ed908352eda1003f9f2e. 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/QZJRC2069205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4c141e0873708b920844f22e1883bdc3fcb8178a67ad9aa489c3424d3eec2b. 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/QZJRC2011721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711b87403dec7bea473a6facb0449c0c78207d58088a97748b424b983d2526e8. 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/QZJRB2196323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38462ebe54e321c2a922eac495e37f048d3275221990d98e2fa8728adcef776. 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/QZHPJ2146901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851760be6fde80f0f8632fb38a56e597484c78036de2366e5ebe361895f19467. 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/QZHN62033292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fc0c1ae53eafb8c715d5cc30521d3bfb67a0190d13c4459e7852d34de48e5e. 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/QZJRB1962573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a863d77f0d90daf89bb8b89cb76e2a02f65813073bf3d4ef3f575eb3cfb955. 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/QZHPJ1987165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6bcfd19ff324ced5129f139d0666dde75e64d9094c88eab28b095c27b08baa. 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/QZHPJ1956688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e09c0d07fc2763051a34e3b4bf99448c89f24849345a0b655e39eea9e9ada1. 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/QM8DG1988842.