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 0xa38f8b0905a747a62c6bcdf6f0a9eafb90463d5772d6d53f2e316cd27b6b9d9b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23ecc82f-cf4e-4b18-8dfd-bea96e895831.json and https://artists.proofprofile.net/proofs/artist/23ecc82f-cf4e-4b18-8dfd-bea96e895831.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 0xf1e1c2afdf8de5e498bde964be85e9c1acd94edac709e4caeb730c523cb9c779. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/BRM2F1600093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4addb91ff6ab2f35d59dbf6d88c847918380288619135ace8c81e6a6388217a9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:05:13Z), 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/BRM2F1600094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f71f47dc4175c6477bf6c94f3c23487111d76b04d341587456c829966830b87. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:43Z), 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/BRM2F1600096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83048703189a592c0a883e852660015bba42122b9780c6030af56009e5989fac. 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/SEYOK2001115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f3cbf0d9f0532423f4ae8b369e07943835f0f98690e6cfd89039ada25d0fe9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SEYOK2001116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbbeba92ef46e2f18f5bfaa49e8a322c2f4a3f8eb6fb421ab92693bd69ceef0. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SEYOK2001119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea983d13822b14167c5c7ed6561d1da91c85bd78353700b88aaef4164e4ca895. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK2001120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1aecc83f03a9a1f3a169b13c35c74ac2a21389d49dba029481d031cdc54aa0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:18:43Z), 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/SEYOK2001121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd44c70f3078bc2d97b77211ecbd1f9eef83e47880a6b1eb0023b8c6555a0d0. 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/SEYOK2001122.