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 0x5e34e649a86a85eeed74cd997412e5fbb0df9ca5f96b4463393e22047358b567. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09824761-5a05-4a32-875c-214ccd4e08c7.json and https://artists.proofprofile.net/proofs/artist/09824761-5a05-4a32-875c-214ccd4e08c7.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 0xe4ccea488ba6ee7492705509583bef0110fd63c4beb3bfb7d8d29f93a2520fc2. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZRP52516901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9af551e2ba08ae2f84286159e8fea2c2d4626ef6d242c53dffb172769b12a7f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:49:34Z), 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/QZPLS2570769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e7286a84bd4e2fc493b7f074d425d9f60cc7b77e27f6f9452c1152b0df0608. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPLS2570780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4586bca9ed1621363f98dab87cc1a7db807b28c8f0c2b880d5595dafd4485b08. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTAS2540647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2f3d89b599c3549dd40b67b982fb507d5b5c26f991806a0213b8981b1fb96c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZRP42524627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da915e7339a2539b705f9e483a8221e9f58758161b82a54e8865910257e674f. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZPLS2570755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfabe2b65a8e62820b8c97606525d5b0bdd5e87e79a8e56cf9e6399fae0d8bc8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAT2570727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb66cd3446d149c34cf30f194d1d338ec55adb3df0b52fb194097c915c0a208. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZPLS2570747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c0819638da5d4209f53a80eecb1ef8eac83a0bc8fd2bb71905ebeb64ea69c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTAT2570728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081cedc6ff653cc9e94c2ac3cd265a2f7c08c343638ae3d8e991c3ef52f0a086. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZPLS2570767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fac1b7c80e0643533d39ad975de22b4dd1776d9207170cc5b67472afa7dcc3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTAT2570729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bba2dcb40a76e047f6fc513085b146ec729d976f6fff1c00782cfc67dbe07e. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZPLS2570761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e0e8f158822ca7737ba9d7809aeada435f0ea6948734866dbcfb362cc15d0e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZRP52550237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d0068213bb5f75e5d584020778628dd27a1645a318e21008e8aa6235582f18. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTAS2501087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a90bccf7d8b3a95211855f31b4fc3ccc92ab0590b84e4fae06259bb28ed410. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTAT2570730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3ebfb2afcf06ebba3f7df8c23ca9e4966a16f1f686d99a1079d70ae13d641. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:52:32Z), 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/QZTBB2550546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ebfa38d08437e8d4556db038ae50d0b39e37c02c7cb1d5f343e234fe01863e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBC2590143.