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 0xf13775ef2df95a0452dfbb5b8bb76eae9577c2cb385faff374bca6cb44c87a4c. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a455c993-18bb-454a-b74f-37ef4352672f.json and https://artists.proofprofile.net/proofs/artist/a455c993-18bb-454a-b74f-37ef4352672f.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 0x133f7de33ad1e9af0c9a7be6b26ae8c4f1c87721aabffaa39cd35ce5c02a22f5. 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/KSA012361736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf42d74b3dd556c1261509f42d521f94e3c51bcab86d2194a13f104eecb7cb8. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:29Z), 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/KSA012361737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4e8c77936e4b08b6345d654a273488ca441f6dc170ce0eb85c38e887f7774. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/KSA012361738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca8de4c0b07acbf641f4253175f6f199e2d4b1948e7c3518e32ad990c3095c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:43:35Z), 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/KSA012361739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b29fe7f2c66c254d6dc6f94c8f55c20567ae482a7eadc49d44c2ff66dc689. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:18Z), 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/KSA012361740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1665964bb10e16c3dce2aa6d081c5850cb23825473c5d4cb4f610c755b2413. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/KSA012361741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f3de5e8df59d11eb6e4d67a73ede6f8cd1e2ef81e56696f034f550e6f416e8. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:00:42Z), 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/KSA012361742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5475d3cc86d919558c049e94d72382049a5fd38e11a12437c63bfa9504bf3a55. 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/KSA012361743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b2cf8b61dae8480f650f827c7bec050d70a33481083320f1a05db9b8cf7a4f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KSA012361745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1258ddecaea0056d420c2a15c92430ada9a7f66389a62983577709574e1d28. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KSA012361746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf7068167244a7795fb297b5a99a8cf9ec9426b61fc63c747b41ea8e5f79fbf. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/KSA012361747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fce413b81ef820b318ebe5ff79414f2d9a37020268574c4513bc5bb84c6f11c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/KSA012361748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4992a5f7e89ad0f82e7fc42a5d6686218bf1397a439289aee5b20aa25a9dd195. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:19Z), 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/KSA012361749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ffc2d4ab3abf6f5ce65383e687683538fc2c51e4edc6ced23ee1572b574aa9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/KSA012361750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9f5384fa7ab46026b536a43528d1279a29a5b23ba6f6b7830e8e3f103c0364. 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/KSA012381821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ce4775c540a4b27c9c0377014395c01055742c6d1591e879317d64c6fe7aea. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:37:43Z), 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/KSA012381824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaf6eab718e6fb821fea387a1d879c02b072bea0632ce676ba31a3c07f9644f. 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/KSA012381825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f39a5ef351109a7bcf13025461367744869fbbab5718cb46d9300c5eb213e. 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/KSA012381826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c16d6c99a864e897e4a33fbb8c53bdc5fe2abbd4853fe4a20169c588d8cd513. 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/KSA012381827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4e8649c2172d1bbc0406bba0081a63c18e7f2778aa0ca269f4536ecbf726b1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:53:47Z), 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/KSA012381832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c487e8d41c895db4dd471fff15f36bd815800596bd0912137238688e8f9ae54. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/KSA012381834.