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 0x71205dab31a613280dcfa9b9f373d866b828015a94701da870989aca23228399. 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/0245b61f-0d0d-4354-804c-7cd875a008c9.json and https://artists.proofprofile.net/proofs/artist/0245b61f-0d0d-4354-804c-7cd875a008c9.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 0x3d54736e6b48c769cd905577d00ef74fc3cd8ce2cd138c440164cd42ba1aec60. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USIR10000822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d3b2e701a378d02b0ef8c888c2f478a9051fcd189fe1389cc1eee097f10cc. 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/USIR10000821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3e1578033251f53c26b49912343c556915ae4b88a19de0bfae604a72a270bd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USIR10000820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c801e12dbc84569a63679c24d6d00e667d024ff1b6affccf860d7db7b85be47. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USIR10000831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43c8cd44e16ff1297b944213979bde966d5465518d4e29826e30f378c83cd98. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USIR10211597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf044f3251b807d7905ea7161427a1367a5d0535a1f27b1f2b6b8cde4fdd7e51. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USIR10211599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf775b26506275218307665295c1f950006e1c2d3a410586c55b349da0b7d05e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USIR10211600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f31cda522419f1c0086a64802d2b0df4f6ac6074cca69d398bee5dd3fab881. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USIR10211602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201595836d3b30f551021c47a108e615217e94cffecbd387271f6ffb4d3aaacc. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USIR10211603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7f8e13d9ccdc03f69ee0c67f91faac799c5249ecb19981d6775ca96be32ebf. 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/USIR10211604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20be87a7c726a855dad5cf93304734a15397b66e36989c98da1149c3fabee246. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USIR10211605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f77e5674d80bc2efb66f4967b8bbc0142716c7d1e33aaefe945be3521ee6047. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USIR10211606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d92c1ac0399b00ad35e4a7d54d4993a346d0e54aa32881f406c725f5f6eb3aa. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USIR10211607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95545fd04c27086066d956a5014869dcdbb877c99ed40d1477840f477cf27b7. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USGF19711507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8e932a09963ee6ea264f0272f9ad58c69cfd25441b6ee3b2a252220b94e679. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/USGF19711508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9039c210d12289e801d95e7c009061c28eb507dbffddd87d2f1db193a953ddf2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USGF19711510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e213945f61306cadbb9c3c771a132557e6f83abd1f05fd5e8f25cf14bfea80c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USGF19711511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dbb892b6d2a16f766190e51dd2841ead475cd20b7b8f16477cd22ad78f15c8. 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/USGF19711512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8308d36863e4f6a1216e00db7f08446b6bc14e723ee656bd271b078ff245c3. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USGF19470408.
Just The Way / Old LP / If You Just Didn't Do It
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ad49fc71c5a4a3da134c73b5a6bb716cee9ee7ef8aaa132993858dfb3ad7ac. 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/USIR10211598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae79d9ca9a9e029e1898290f6c911d15f7ccddbcf12cf7c90f097884242b8b8. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USIR10211595.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch