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 0xfb8b6ba193d20658a8552bbd1311871f9129f8e6cc95827e3e1d4a67b0110bd5. 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/6ddfdb32-ec10-4200-af89-6213fa6db943.json and https://artists.proofprofile.net/proofs/artist/6ddfdb32-ec10-4200-af89-6213fa6db943.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 0x9cc2037538988d4f040ca9aca5cb5ac2f123911dfde915657ba822ad0eb4fe3b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:23:24Z), 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/DEYW82305335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2201257216d4fd45519b1d943cb89cdd557a47e545db4846fce273a0b858280c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEYW82305336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf667f0e175f143dc7c6edd52eacb479a3a612a033a8a324947b190518e6eed50. 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/GBLPF6790087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bea48730a200afc1a1dc08474554797a675d8596748f98e8b278d7f0a4125f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBLPF6809757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dc7f0f1c2d6008cd492b219fbfe91b19b2c85b49f01dc378d16c120854752b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBLPF6808580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5051e417a4056000ae58a289873ff78f3134ea20f486c3e2d5e23797a2510f7. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:32:09Z), 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/GBLPF2518665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8ae2876312ff76af3cf7c4d67a693fcb792156a24b998ff8403e140f384f6b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBLPF2521699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b7dc731a9d0046e7ed20a949e19f0d804d3d502dbd944ea2ce85a32709cb3b. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/GBLPF2521700.