thumb|The Lowdown Drifters (Front to back: Big John Cannon, Raina Wallace, Dylan Welsh, Doug Rehfeldt, Josh Willaert) The Lowdown Drifters are an American country rock band based in Fort Worth, Texas
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351158f19a33ac91685b80f3a97cb5b77c75f527d6a93aed29e71486062c4844. 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/4e597050-59a8-4d3a-954e-e7892bbc93a0.json and https://artists.proofprofile.net/proofs/artist/4e597050-59a8-4d3a-954e-e7892bbc93a0.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad81ab7871f7b964f150dac5a6ee4e3e097603f7af6bf5ee6f12f4b0e12c185. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMAAK1634778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cd356812087e196fbe3c4a72d5451c9769742dd14878ed50573179ed55318. 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/QMAAK1634780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aba1043358a4753a6bda3da16a5d27123915fca01394a6552ee6ebc00993e6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QMAAK1634781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e657034e3d46870f7a3c78f378a8d4b18afefa1803dc7a45d7644d65c7e07a. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QMAAK1634782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbecbefed61f967350ddb8fc8c5060e2121b18d96660f912e0a24a04943a7faf. 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/QMAAK1634783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec76fd0cb98a244818e2ac1b64440ed820ae227edd245ff4fb8a1384d267700. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USME31900271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86264bf543bc3030d6e76c16ac00319f76397f8145f652d42f1d13bc910beb60. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USME31900273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d984c2dacabd5896a5b9e5f3ffce8fab0794b24aef5bb6b05fe03837ce4a86. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USME31900278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54561390130ad11bc56d49a53a88c413a4d0da432412cea58dbd74ca2707408d. 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/USME31900279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e20283504287b230000032bc090cce032b056e8a9a4e3e3a8881996efde0be. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USME31900280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c29117d1b14a185b43ca4c2c91bb060fcd0f7e334ec44252d6618dccbfddc8. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USME31900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac88c8f7861401635e815778a1ac5e31d85051825bf07c5b660a6d36b81d5d6e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USME31900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2e1bce7d35f062321898327ce81d71d714b189ad8815488ba8cf44b15d959e. 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/TCAEY2030909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c54a33ae50dfdd991ed87699c0ef9108db633b7e0de1b439c07a4cedd2351d1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAFB2072161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e86a324a7afc2f786635bf7a75dddcfc9e7dd5d7057f90f21a495912d8b4fbe. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWV2140433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df6a5031a00ed9cb9358a2d595ce135141ba6392edea54e3c6f56ca5919b7d0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZK6K2221424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24116bd7815b2c033d2b8bc63bf93c7c080e1d9ef6bef4eee93aac198750dd5. 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/QZNWQ2220294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b15df18b8b2d754ff66a18e53d5b0858bd5387ae184609f70a2674ac385b303. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWQ2220295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2b7f16f049502f7db33b6fd147412f437d3fc09fb7948fe4e595c59221c174. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/TCAIO2481886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fcd88ec0df6e52825a5ceefd9b2fdeba333f2b32f954ca9ab0ac163cfce9af. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/TCAIV2444476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e310c56a227655f0813d7820d151e7df2b47b6e47dc29b9cbc17c86fa8d57b4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAIW2481170.