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 0x0d21953501fb901ec53ce6188cc836b0c0d167e72104365eb206840c9b5f3a3d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e86cc9ef-258f-4946-96ab-234d7cbd2d9f.json and https://artists.proofprofile.net/proofs/artist/e86cc9ef-258f-4946-96ab-234d7cbd2d9f.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 0x5009395c16e43a83af0997e25824efc2f253f34eafc67d6bf4c540ee0031e79f. 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/QZGLM2517583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c3e82ba0563ce58cf7944ea12a72eb2116d8ca22b4e67789ebd2fc8f8de632. 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/QZNJZ2391117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfc27a1f76d42575d2b0cba021e11f740fd4e2fa61a03715566c63345dc97c0. 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/QZNJV2305828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14987cd2ae3c670b5d4fe1f4d02f1971c85ce1ddafbbe0fedf0fa03f5a03d2c0. 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/BK4DA2307357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda1cd77306f4b8623b4b856d52cf701aa5097f7ceaea1ca0a4857cc2d4f88d8. 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/BK4DA2307358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81381e080f092018d2dd03f489e6c852c9c0285f2e34126807f59e8ca5188bc7. 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/BK4DA2307146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfa745741d0821386a37fc455668fb3e18e2b2392d540b78dddd958e010d6a9. 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/BK4DA2307359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451251eb5964c543ab6b1eba87c012b31dd52e5283d1408750f5740d6241fc0c. 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/BK4DA2306978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe011d998c878ee50c6a6bd293bafe8420ead252596b1aed8dc8e94e15d21da26. 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/BK4DA2307355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6b7b0b64a99402a4a49fc475e95a9306f125e3917bda260dad24f5ef20556f. 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/BK4DA2307361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2828bee5a4659a51637bb867df48c611954f4039819f6560e179af561d0a9f. 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/BK4DA2307364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040cf74dd3a4c7a8984424f5bc41ba1cc8cf160c3e8a3acac13b1db2b4a8bd19. 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/BK4DA2307362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36735ac06335e2d2ca284da864c4d66d9c23320de1af826d2ea4cefa93470959. 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/BK4DA2307363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a407ec34f918373e940de23c12544c87208152830b249e5605d1ec66dc65d. 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/QMFMG2322077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116b5042ac7754f85391de61acf54f0fa3e664c0ee28cbb376595c67edfaae6b. 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/QMFMG2322080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94c272f8853ae95af6f76fb0d4c549b2ab45a8355f05ee62d784d5809ce13c6. 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/QMBZ91969195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f539f080bbee3edb3a2d9a31e7659739e76d15c3da34b49b19ae3dd10e207b4. 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/QMFMG2324646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521c70c291098733debb5b933dc1f62418e00dc25e6863540d7a99ed2e4e625d. 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/QM7282070453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49144e5e9cd0642d28935362b0a12f51613a7f7776f6911acf94962a1f2eb824. 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/QMFME2246617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca8c2760695325ef1daf4455c44bdadbd15513e2db76a9f45064bf19b55677c. 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/QMDA62245088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6d638d6bdb4167248f6f45472064b0c96cf9b639679fed4049c4881e25e017. 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/QMBZ92265164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff5fecc650e8b502d0352a7a112796fc1543651f01d0cb71a198cf53aa8209. 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/QM4TX2232175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3ebf66c015549179e3c83c79c32a62390a32882ca38cc6387881021fd35448. 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/QM4TX2209639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569219df71d4aecd4bd77b202c5856562a30556172053444e94e66fc9d7d7e36. 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/QM4TW2259414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c0c8e8c10cf3f3f971f9f5957e69804a48646c6623acbe7d73d3def15b1608. 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/QMBZ92061696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0691aa40142fcf2abedf7799a45c598501f03faf11146fb8b1f1138dc183302. 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/QMBZ92061730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bebe63d3bc4674a57856273692cef90c9c998dd7a3049953aae3b0bcefff2a. 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/QMBZ92023961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc11215e51a78ca2cb98e14adb355b8a05e705ca5e81e7a8ffeaa2ed875affe. 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/QMBZ92023990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98f16560ec22f8df1d3cf902e90c29350a880dcb55c6aee5b78cb494ba1786c. 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/QM7282046623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2642175a1bcd5a01ddc8bd05f99556fc22c6a646853cd6d8157360270658b25c. 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/ES8481801323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6402ff21763d028e7de68aa8caeea991971f0c3685f77659737ef18dec63c2. 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/QM7281985379.