The Briggs are a punk rock band based out of Los Angeles, California. The band formed in 1999 under the name "I Decline" by brothers Joey and Jason LaRocca and bassist Matthew Stolarz (a.k.a. Duck). I
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 0x6127491cfbdd02cdbf9890cbb0ee62401597ab5ec118c84f8047b8d01540eaee. 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/1b8d5107-a4c1-4676-bbb8-9632251538b4.json and https://artists.proofprofile.net/proofs/artist/1b8d5107-a4c1-4676-bbb8-9632251538b4.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 0x55eca88cc4810bdd6b5175aea3c39bc6e50f4df86bbe59f28f1553fa41bafcec. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/US27V0401801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d89e4d05b9a6f2695dea4e5d39eb3c152af19a0124777b293eb5b94192c117. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US27V0401804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a949267bf32f0efb1349b4cdcab7c5b63ce88ec9b2f53cabffd25cc8350b2e. 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/US27V0401806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73329f5e36b788e405309b73a23fb02c6cb40d933580ebe0b937a7b83bf87fd2. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USA6G0424901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54662ae4b66f66450c511ac4f0728fdb0298de8328fcd223a004e0212c9fdef7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:50Z), 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/USA6G0424902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d50be2162d2ea3d1fc6ed9cbdc11bc29315dd6d48a9ef95e5565ed57619e77. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA6G0424904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10cb70e7aead1a40b257956523c9502207436c204ec794810b76306561b7374. 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/USA6G0424906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fced0ce331d360ed60fb73d5c18292e4c11ce401a088ae68541a21111a9a98d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USA6G0631102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0817cf781a314674f11a600ebf6996b941bdfdfb2e9cfd865038c014400b1c06. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USA6G0631105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291e23f8f06252c88f74e8861f710579b62a463870aeec0069830b6e06f9d621. 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/USA6G0835704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401252ddc29c9fbff64a7affed91843029f05510eb240561e9d350495e2b31e7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA6G0835707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe288d622ea8267a1f07b813b975f197f1217e977fb31b9f05e3febccce826a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USA6G0835709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345e693ce53b26bb0a9f97cd8043548bcf841780aa478c60e55c134419225d23. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA6G0835711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e3f6cc1eab25e31b292a790eb163caa2a9eb0775503b58ee4b784c8676054a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:42:21Z), 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/TCACD1581390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecef5224b6a0607f1163101d0caf369c6a0cb33945c32fc4ea4247bb73998b67. 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/USDHM1509747.