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 0x473bfd24ee6e18019587f9dd9b32361d9b06e06f73855b80b4794261ec20909a. 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/d82fe92e-2068-4beb-a1a6-6a4a2f6c02e6.json and https://artists.proofprofile.net/proofs/artist/d82fe92e-2068-4beb-a1a6-6a4a2f6c02e6.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 0xa4e5132ba59bf79e557ebbc5fc471b380e39c8b1f2e28297cd71ed73f6a46576. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR96X1915458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac3a640da18dbcab7666fcd7c5529887f7cc4561fe284b46ae34b2098f9560a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X1915457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825015c679e8c83d2093e0b65bce302143d93cef330b70bb7362f11425befc1f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S2418364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2becd58399df5aa00336826112fbe0d3e3b92feafa3f716a9b9538404dbe12a3. 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/FRX202453587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05b961aeb0c52161cc60eb6f78b8f1a97daad89a4097d1740fd432649a10ac0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX202339303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa048e6d75bd7711772b97cbb8d3f293ceba410ec5a220d8cadae84c0a324d1de. 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/FR2X42320702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41942174db08149ad7da2b38fc2c6d92612a57eb365f4cb0dae0a095a3e1c318. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX202453589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f562d9ccd71b2f2838b05176a5e5ed724d4f9cd085a4d67485b39136abbcd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX872359777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ea457a912a4385f52c3c82b3f96d859dc2efcca415d4630b135e7a8b521f7f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:30Z), 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/FRX202453590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757103c0613966ac08f74f2d85f5eb926c40d4abe0bdd7ffd0ca4687b60b3445. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:28:51Z), 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/FRX202453591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a4ffbba124de32a1c40b1bbe152308b87302b3bc59e87dd26aae8b65273de1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DGA0R2412413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2ecb1f1ae0b9e13a2044975e9c5116a4cd45ec8af56b9f55a2067ee78549cd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:30:05Z), 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/QZZ8A2521473.