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 0x756de5431d2196d3911fb33d05b22b2930dd4f7ac51906a3c071964b48e43e1b. 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/b0335513-ad14-44de-850a-ba07b2f4563c.json and https://artists.proofprofile.net/proofs/artist/b0335513-ad14-44de-850a-ba07b2f4563c.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 0x2dbb01f36b38927112c4f8b163f8f2d66b7b6d7f1b64e0e49516118635c8d1fe. 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/TCADH1757342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae88a45a610118d70c384963a8a8d4fa2049c572bc970b3c0a29d50b69689458. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCADH1757343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45fd2c19dbe330ea89162de73db9ae4fe90f534567f1d1dd4d1de4fd2839eed. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TCADH1757345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b7f08d08962f6f2aea402a3e9dcc1b19b70be9f5805e0072c40348de7319cc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCADH1757347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd163d03181b1e811b06cc64f611ed8b98ccdfbf3c305759e1955d403c17cef34. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCADH1757351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a8d7dd78da7b54d9f11540c821933a26cfb87d1dda7a3f03cf2ac448dc1a08. 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/TCADH1757354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece4a24f61d55530e13d6675096bbbc7ae4d9f86622ccc7ac6ff8876510b468e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCADL1833231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551740f26864cf3dcf42d59f7d88833922d1f7eb4cffa573a2a16414730286c4. 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/TCADL1833229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6721d6819174e35c3c08e8b27da4f4e76faf87fe714a2bdf3183879f7791fc3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:08:02Z), 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/TCADL1833226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edda75cc4da9539f77bc7d3ad3a392fe573f3c1f0c888336cfc6712ba84a634. 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/TCADL1833244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70127262df7e0b8679f835b2f2270a4a8842d28e17bcfbe91872339f3b026c8e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCADL1833253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cd790a7fccd38c5a7e4dc957ddeac023a183a26732e0e301dd9ae0a0995132. 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/TCADL1833251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36c68bbd1bbf12afc8f3be71e618abdb115fe65bb8495be8cc3408b3afac06d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAEX2023857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca53c041dc3a7006aac582fb96eacbbb3fc3621f515713b0dc19acd94ea559c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TCAFG2025456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638ab889adabd9f270e24c9074208b655ba1068072f07bef907ac42326546b7c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAGE2277937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211102f7ec036d00a04113c194b3481db32d8f870b098fff0e438406e583a67e. 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/TCAGK2268467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fd50881c5df810df268b3bbcf8952809abdc4bc1607870d502a05d05a8976b. 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/TCAGM2244194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e53949003d5c953ee5a61c631a7f0e5570a290ccde24e1cf7bb0743c179343. 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/TCAGZ2334860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe945c4f3c63ede362b58b0c27870e6ac552198cb606120110e85862edcc72e5e. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/TCAHE2395520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a81c2c57603a4e26d74c70dc97da12e13f3cfc37ab342736843ba7aab60ef5b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:06Z), 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/TCAHI2311848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71790503715475e07566c2c5069f2a4f4104c1888e6b7b403153be008c06d19e. 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/TCAFC2066717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f648ccdc37f9c79ec50a6483bac4388949ee2acc20967c0684c5c46e0ff2e95. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAJL2561731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce6475a623ae4eb8a8552914953ae4513fccb024ebe52148f039d22f5bd508. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJJ2518358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f86d05ed9380c879fbf890842e026131fc8ac375b792d5268d0e6605052674. 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/TCAJJ2518342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528c5555aa109ed7efe5f5280a17e866d125503569c2e5f1f91bd3226298b8da. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCAJJ2518334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ce6475a623ae4eb8a8552914953ae4513fccb024ebe52148f039d22f5bd508. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:23Z), 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/TCAJJ2518358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f86d05ed9380c879fbf890842e026131fc8ac375b792d5268d0e6605052674. 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/TCAJJ2518342.