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 0x2dc41b92962b796f3ee1a73106c19bc2a992a63d080bfca390d60ba9601c509e. 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/47e37e34-06c9-4358-b898-fdbdaee6c1ab.json and https://artists.proofprofile.net/proofs/artist/47e37e34-06c9-4358-b898-fdbdaee6c1ab.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 0xc592bf63cd65b3020cbe6c82a76cfeff561666416a021e6a44e50484f84f1a1e. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZES61852329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3986ae2af49182501e701e0f9f53c62d2e6ea8470bec8a0328c19b0a9e5d1c4a. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZES61852331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5acd21293521c2eefeec8d984aca6b41a81eb7dd75b6d8588ec30b6158f41. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:56:01Z), 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/QZFZ61904026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bbd1fbf3fe72730477bcfce0daa91426204cc8751fef0f14368bd6492ee3f8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHN41933648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f993762488d899cab7c8a08f085457d5471527e13b7d9de8f749f0e0abab11f. 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/QZHNA1946490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c816d84ad3cbc69bbfd23d9da26f41812bc4069b3ed58b96820aa17d11cbe0. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:24Z), 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/QZFZ22053769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e8605b0412fa4b11326411e2292abc36991b734f0389174aa04f4ff85c36ef. 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/QZFZ22053771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc5a2d2200d5c282f4ff87098e9cd5317281c161f306412bef20bea19fa9d33. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:22:18Z), 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/QZFZ22053772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8557213440d3c9de144cf61a693b89d7b5d62da8b4dc3e4ae0b97d0fad629e76. 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/QZFZ22053773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645c17659b92ba2e4dfa04728fbc84b9576854dc85017d447885cd6923d6b56a. 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/QZK6P2095133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcc5c25a494aeebbd4eb31a099e664691e9333ab4ee496f6a4635fbfa79a2c. 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/QZK6P2095134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8690763dd425209850af1c975066a78f21a0b5a94218c9fb892458b30a81aafd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWS2053749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04ce543298d9a9012a62b7ceb35b78e0205abc336adcd6405d837155904dc78. 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/QZNWS2053750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6946461645a22b4c7f119ff515c844b435b09be8907ef0b38de15ef5670e4e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZFYZ2175723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ef47f47132d71d56feded800b752b3b255011b4abc01be8f6b876572035d54. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZES52160643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a5c508c9fbb7fa86702f8a7d0f1bf90eccb7cf97f27df8d4f29a7ab22757fb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:46:50Z), 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/QZK6P2124520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2875077fa18c619c9b1149e0193905677b97ca55f438f6783c31d3f87921ae41. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWV2166710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a7a9d120eb5ddb5a72cef66c22634d5ac36871a7da356f3be6d127a50f7616. 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/QZFZ42269797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf254b2a207aa435b1ce5b219fea68fa9e1f04ad392bbb7770137de50709bdd0c. 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/QZHN62233439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17033b0f54177b182d393293d3de31a968348f7eb74a3e33efd39c5bdc3a8526. 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/QZK6K2208998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5779e3ffb81a47a39200be091621fb05e085735ea2e5b50d21885b9751d726c0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZDA52369968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe296cde4d670d64ff9af7816390be2bbf5fade57c0cd1c433cba51079968fee5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZDA72423071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c86842739fb1f7463a554f52e1ea7282a658795fa22e3f91fc68c6950859ad. 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/QZDA72423072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e3a2b9d1783429b70a38079f2fd532dcb38b806e12a1729271c8ccf24e6726. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZDA72423073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cbbb66c326a6e93335b0c13b8bb8eed2b5f59a0631bb1d9d18283a15c58296. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZDA72423074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a6dff1070de71847f9f2e0ee2783ac8256ab33e7e2757c18403e5c509acf6. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZDA72423075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee7193e6c304dc6e72676f11bc90fcf10f29187db4ae3692482259a7d631eda. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA72423076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af1ee458203f0e4ba8acd483dae13b763c3f8d1e26584b7c5c3226cb3bc281b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA72423077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc82b66bae012c89daf65b77d81b64965b6e2086515b689cfbcbb08a639a770. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA72423078.