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 0xf23af74dd617dc5cfe59f9ac2f82b20d1aabe2f4399cfcebd96e7c16765ddb19. 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/68ab1a28-9a26-4d85-afd7-fe5e9e230416.json and https://artists.proofprofile.net/proofs/artist/68ab1a28-9a26-4d85-afd7-fe5e9e230416.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 0x86140665b41643ca992d957e02f38b052b1bdf12b9a0c9cd50d05959bc50b68a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2094950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b63291cb5ba21b3bd56fb79dff80ffeb6a7a75c86a3a4b6ae3cd972db9be498. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR96X2094960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa0afcf8321ad343a908ced14af788d0eec11852ae9d1dc5472a257d09b1bc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR96X2094961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa488f7cb38448ca93f32297309d183ba776e1e80700f1b7298c405d3acbf3d. 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/FR96X2094545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241702ac7b997b865a095223279db52dae09ca0a01c3aed1e5c33c368c499c54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cacc2ab7e95227e166d03160b107883536e41d4d74e3b5ed60ba8b98466e187. 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/FR96X2094548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220a10e16eb94aa2e7fb3247d22a26b2135ab4c1ae88c7003d7e26fd6bdd6f5. 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/FR96X2094549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fac3c2a4164f88b13f330e22b0f50ef17bf03855d1ed4bf24c4006b3741e54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37eaae44711c5eeb059c5aeee11bf023ea15664ef59854c2f49cc768c1eb7ec2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2094551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943adeb16abea9a56a8240fb55523ff5484ad36d269ccef42515b54cae236bb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daec9dffd3fb7ce9ea1124361e2a48d2dbbb0f32b32153d65b77dc6951dbdc8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR96X2094555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b85949ac0bb673d2168a7026bc6018c7ba8f2575386914ade2aa4142b5147. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR96X2095311.