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 0xdf8feb263ba24751261f98ddbb153da2c47410228c5895f5ae315a6fd8739255. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80580d58-4055-4607-9fcd-37e9a1638329.json and https://artists.proofprofile.net/proofs/artist/80580d58-4055-4607-9fcd-37e9a1638329.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 0xb501a55fe8081d7547e1fc9c14cb62a5d9b78c7080e2712313b9c420588eb9f6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FIUM71700300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa843b913c977be446d46ffc9e4e733cb2a7c2dd14e0fdbb59b29f581ee60e8. 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/FIUM71800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e96c94e991363bbb844c885b2b408f1761f780ea182e0571541ebde79a72f4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FIUM71800269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46044210a2dbfad2da5c838477f82d91b124387ffd4277efcd084a8776dc9aa5. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FIUM71800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea985b34f8ad644d0cb69090abc4b5a2f3a866f83b5d6285d312047f3ff1521. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:34:48Z), 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/FIUM71900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77abc889a7f49fe4b7d822dce8606cebcd4ea1617d860b183997e1d235db1112. 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/FIUM71900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa843b913c977be446d46ffc9e4e733cb2a7c2dd14e0fdbb59b29f581ee60e8. 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/FIUM71800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9321eb1d97292b6ec717adf9da01c908ae547f7dd03c48722ac09203d08b536. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FIUM71900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46044210a2dbfad2da5c838477f82d91b124387ffd4277efcd084a8776dc9aa5. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FIUM71800519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80368052dfa43c2d600a75cc976324a93c2ddd0a2de2a3b3a20fa6c789da3c8c. 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/FIUM72000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11aac87dbf81b76ad65be155817a28eb6a04aa4743cc4eefa34ffdf29187386. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FIUM72000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3613c385fa31cf9da5d694643bb8bf9ad007e743591615dd5a050a97c975b13. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:59:24Z), 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/FIUM72000363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9b24b2337c31cf1578727a734c9179fb7bc4ffc2832b69119f1fb66ddad447. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/FIUM72000409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3613c385fa31cf9da5d694643bb8bf9ad007e743591615dd5a050a97c975b13. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FIUM72000363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb657f843d98fc20567989b579ef97995812b5cc781772e79d95483b4478ae6f9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FIUM72000412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80368052dfa43c2d600a75cc976324a93c2ddd0a2de2a3b3a20fa6c789da3c8c. 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/FIUM72000097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbf7773866e79af5131e42053be881bfea92af5e641451aa376e0eff72a968b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FIUM72200326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193237ebe5fede628bc7d3a6e7ba15399d66d6a35d55db54e04606e3d51ad371. 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/FIUM72300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbf7773866e79af5131e42053be881bfea92af5e641451aa376e0eff72a968b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:48:07Z), 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/FIUM72200326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193237ebe5fede628bc7d3a6e7ba15399d66d6a35d55db54e04606e3d51ad371. 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/FIUM72300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc683b0ff6122e161dc6cb22bb8871260431090a7ca23bce3e1f478f694b24e9f. 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/FIUM72400146.