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 0xf320c847e860d9902777a14f4c32226860c60e8423ddea6fc1871e5d362b8921. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9dc6511-3696-4817-81f8-45cfb9503bf5.json and https://artists.proofprofile.net/proofs/artist/b9dc6511-3696-4817-81f8-45cfb9503bf5.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 0xe04a58633797020cbbc46304705826eaa542979ff51ea99823b7e730a86ba6a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLS762300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee5b184c6048c7e6185078f1f2dcd005378738684bfe6270e854b64e559b595. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLS762300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96508c7ba4abece524fdd2d97be06607f9c37ff04ad61cb5fdd3250fde6b846. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBA2343131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe925a58e6fd980a62b005306196b279359960134620dfbb4ccfc7436d173971a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLS762300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67291164ec9f0aa9226ce973eb4b290c481603ed22240e47bf3c51c6918aacdc. 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/NLS762300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58789cf98e9291e6fc05dc7d93dfa4f54baf0662a43fe0633b759546c16e94. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2333069.
Masters Of Hardcore - Magnum Opus (Chapter XLII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dfc9899ed50b7d3cd00453f52e62fbd0a77657bf0cac9b3e9dcbcd6efdc57e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLFL72000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf8b764723fcba3cb14e9b8fd9c5ce3c456052ac377f64cbcfe43456a46f26e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLS762300811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe925a58e6fd980a62b005306196b279359960134620dfbb4ccfc7436d173971a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLS762300771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9caa65f18bfb133fa9a19ca7d7be0ab0bba0cf0358fd109a37b2cec82729f684. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLS762100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67291164ec9f0aa9226ce973eb4b290c481603ed22240e47bf3c51c6918aacdc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLS762300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40fbe6bc17c5986e3abbe98e2901ed67d91162067b5406fdfcf3bd29d872e43a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLS762200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b095eefa919b4251dc12a79d1bb3ca99ae6b42fe91e524e95001d9f246299b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL3GR2203702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96508c7ba4abece524fdd2d97be06607f9c37ff04ad61cb5fdd3250fde6b846. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTBA2343131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2ddcc66015458caaf730c74bda13cd35583b556ef2586de9d0a62937684048. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLS762300799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58789cf98e9291e6fc05dc7d93dfa4f54baf0662a43fe0633b759546c16e94. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2333069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e58789cf98e9291e6fc05dc7d93dfa4f54baf0662a43fe0633b759546c16e94. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKQU2333069.