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 0x63f74f295722697738908438d593aad7606aa9b47ed42bcbc56ad544c1def05e. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a924a48-bb31-45a6-9622-1524056b357f.json and https://artists.proofprofile.net/proofs/artist/7a924a48-bb31-45a6-9622-1524056b357f.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 0xba88a6590c025447ad1beed2a4df797586a80259cdc215802424b4fc11ae1244. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:18:55Z), 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/QT3F42560056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6be0fffb369855f3063e9c70e66d9181f8cac0708f31594cb00130ea61a459. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:32Z), 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/QT3F42560057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7392f76099cc6f5db5d95f253a221df86e73de279cb8897ecae8589d48c078d5. 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/QT3F42560058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d632c71c19165bbb4cdea49ae566de226df9b650618a9c42b05e5d9e869d3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:09:58Z), 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/QT3F42560059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd6b18147d0125ff0849f7bd89236f568e02a0f92dc90b498884a0fa8cba2e8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QT3F42560060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351d72ea69fb8b47c5aff4b1ff7ced7f0ba4a717860f47ab31e74d5b75af2238. 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/QT3F42560061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93ab990ea4af31f54658bbed85a2a7184c53b76601604941c87be233580b43d. 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/QT3F42560062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dff3457d55685fbbd20f2347c730693d6172bf1c8deaa4cf7575809a020ae6. 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/QT3F42560063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e48770e2c72a14272ebaed73a9e859980c3a6a04be32ea11d4fa08aebd27ab. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT3F42560064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c65f44c3d4bccb0cb9ba331e0f9867563a4703231d3ff2fcea63367331fbf3c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QT3F42560065.