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 0xae5a084324c0eb0e42d8062c18fd0e672d2129889c515ee9b39ee85e4b5e98fa. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b773dbe-ad27-4637-b099-8c50ca10e310.json and https://artists.proofprofile.net/proofs/artist/2b773dbe-ad27-4637-b099-8c50ca10e310.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 0x3acf04d697c08d7d0df7fb625858d8009012fd06a66d8630fda4a3cdf4112110. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZES92490370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61335ac6e5641bd2705d257138707bc2294895a21eb36c39121eca22441feb8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:54:11Z), 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/QZMEN2534821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83345463cdfb9c3d84597609fa5612b944fea6b01f29b49e9afa030b7c2ce1a5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEN2534822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd95ec4b39d12ba4a8d2e78b42c28a9eb29c4a3feb3f5ac9151cdca24017bb8. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:06:54Z), 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/QZMEN2534823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f25428693665c960ee4ea6c5e6a44e1ef6b213940cdbaa1fd38c5ba9832d41. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:17Z), 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/QZMEN2534824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dda3077a9a6f61ed492da0081c04a15c29d510da284d3e5d40cc545ccb849b3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEN2534825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40578d791e5092ee1291068ed0e079d6b8c72b9a0cac41dfd3616cde2b40629. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:18:58Z), 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/QZMEN2534826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3444d1d125932f223207d176f21a4a03694bbe895276971c55afb9830f9a1d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:01Z), 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/QZMEN2534827.