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 0xb7937a51dd7057c551f59b5f8636bde8735da63b3a377b067f213f1f05e7f0ac. 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/db1f526e-3d24-47b9-b567-d193df17f132.json and https://artists.proofprofile.net/proofs/artist/db1f526e-3d24-47b9-b567-d193df17f132.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 0x8b49c2a920293897890bc587d28002c05942b1ab48db13a0e119b3e9265ce45e. 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/DEQ022271437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e95d1efc6bf5f475e0d71da7a5a4abd24a4e24ed6eaf549ab4b2c7c3ae7e687. 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/DEQ022271438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f0fc08eb21b71ae3dc8fb57c798adf87b245f5c15ac74aaa7cbdcd38ca3f9a. 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/DEQ022003185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9a7722c315c675c867f494e3ec69c3376d6324d4b0ec63a86188e7662d27a6. 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/DEQ022003186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7905bc96f5ad280679b689a709074e13a08acfe102c031f64db8ebd5f51fe72. 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/DEQ022000196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe572d49665e26ecb1cff3876fc54142abe28fd3162570a16795af8f1e21a2707. 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/DEQ021903138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb7cae58d17c87042323fe9c6ac7e6ce88b090a9bc665d994dca8e7d16a79d8. 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/DEQ021903140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83d847c2874dd2fee4b0b741a5a6d68a533fbf37ce209b05378cebe72f8f96f. 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/DEQ021902985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655abfdfa1249c2ba0eb988215910658ca2dc6997dc30f18d91704775cae36a3. 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/DEQ021903143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732de92cbbf7206beb92b9278d229dd74665fb0c355269611cbfa1d94941a219. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEQ021903149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fd61fa0bfddbc030b133da66af061fa3cb2e9307fac157f15811904903ccfd. 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/CH7812526904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3771bef590ae47f77b9450467c63d8b7b1456153c7c01f544622fbcea0639de4. 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/FRX872460119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455bb1f2f2f6cfe05adfa8eb454d80b74504a408e63a0e735ba3a774647c4df4. 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/FR59R2434942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6e3817b68b17ca8fcf10929e5743002508b011b687b17479d4070d2884f264. 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/QZW9L2385802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f616b10868a9c354657be565640306c9bacb0320f5dcba3be95a856b6df54b3. 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/QZNJX2365080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a79c8ffc7c3f4c59d07c502ff043beea8e894ec7ef0df77141f6486bfff11e. 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/QZW9K2294370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe991ba4d20f03e88bad689ddd3cbf24502d2c8712d4043927a8b7c526f217399. 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/DETM41611192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f0fc08eb21b71ae3dc8fb57c798adf87b245f5c15ac74aaa7cbdcd38ca3f9a. 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/DEQ022003185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83d847c2874dd2fee4b0b741a5a6d68a533fbf37ce209b05378cebe72f8f96f. 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/DEQ021902985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441ef5e5391050f213f2b40822e19af588f05fa4e7181c515b89df52b0200e17. 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/DEQ021805519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e69a838c29338dbc89dae7855c86df5c3b1157f998bb31339fbb356ba70313e. 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/DEQ021804187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e1c6ff9031151e73b99980c00da40397caecc42451e27ad1148924761c8c98. 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/DEQ021802280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5911081397f2cb03b53cf82e4b10d6498b9123c93b3413dafe400c7a086249. 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/DEQ022007102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c6b3681fb8f111e196a423fcaf8a08e123c45042b960de357063de9363233f. 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/DEQ021909944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a01649a83efe6ff791b191adee1f00051f9d424c06b225a6b069b3907ffbbe5. 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/DEQ022007111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7006c0a7a53ccc49aa57468f3594e49c26e05090f3ecfbde91510b4839d88c. 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/DEQ021911823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4623645de9cdc2eab45a90625d7a1516e8c7daff115ad77f1e435a5b9490a9. 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/DEQ022007112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8854fcca858f3f9c20208c3a6b8cf041b21586761e4bcaf4d6cee2e3b832143c. 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/DEQ022007113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272dcca8d928cfe5c402754e8d4f57042622d25878344fd036f989dd99b5dbe0. 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/DEQ022007114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19038cf4b2151fec2d92b35be4c3e95fd49e088b42df5eca0034e2d8bac66e94. 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/DEQ022007115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13adaf832c60261b315a8968d26ac42f94fffe68bfc554b13350f690a42c62e. 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/DEQ022007116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d10db01a0b0f24a5ff29598752bac6595733f61eec8d4743a59c80b5e43944. 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/DEQ022007118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fa7796e9c438b53140171b9af7218e50b93744ef310d2eb6118e5089333b4f. 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/FRPET2402440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe8fee0e900739a1228effc29c21c75818db3fc274c64ab0d453603851d4bcb. 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/FRPET2101740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d84caff7cf74ff8efcbe0fd20821bf94f7e3704c25ad848511bfd0a6f9e4a6. 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/FRPET2302220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7342d3acf59a1ba39415c4ac04396a85b08f0a3434b6560e7bf47996ef93d7d1. 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/FRPET2402470.