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 0x7c42a98772247abf206edfebae6ed129bd2cd444c34057985fe8f07edb8f011d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd18a163-f463-4869-b3d0-f30427ead111.json and https://artists.proofprofile.net/proofs/artist/cd18a163-f463-4869-b3d0-f30427ead111.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 0x7e6088dd7e9606cd7122eb6d37e41ff905705137b4fa1317fc9ea76d5a67f6cc. 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/SEBGA2000951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c9811ecb00a61adfe25fa7ed14b11e060104e43afdce19a31804dfa554ea65. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SEBGA2000953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0abc70c7d1ad5bb31cdda84d8465c0e21e286952f4a735ffab623f17ee9302b. 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/SEBGA2000956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deaabfec06104bafb50eeb500f22744d1c18d6482b52eac44a3337f795c54f5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/SEBGA2000958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83ca4fef69afc4e2b88123fc8434f41b1582991e9cb2bb6ee5545dfca9dee6f. 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/SEBGA2000959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fb1ac65e110fe3723832041dbd28f32e13f788b67b5f7b3c3c086c57b63952. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEBGA2000989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec702278a950076a477f242af56a5f81095671a87c046cfcd7ca825665df2ae2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:50:18Z), 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/SEBGA2000991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4109fa1928fe0b8a11d0fb9644eacd4770e8ccef9d9283d50f30e6364f989d7b. 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/SEBGA2000994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf922551450536c90c8e5c721f9447b19e5f9bb40eae79a346de79882da2332b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/SEBGA2001004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9768e13d29754b785223258b902c41201f8518d5538552094315c31f6f51d150. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SEBGA2001028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406288eda1fbabaf7d84bc77be119b2d8f6823f87c70a6fb7bd88f970c65ba93. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/SEBGA2001029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d7ef129c64f643fa1e10c21a56fb05d821761af4c5f24c127757f0845e71ad. 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/SEBGA2001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358ccee532ed81a8fd1c55ea72f3973fc424c160b52551b6b4860bcc4d704e8d. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SEBGA2001031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a267b0572f954c6556a108151e3ab91ef47b65cbe441e20147c1ac465687a38. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SEBGA2001032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be0584a321d72791ac786d2bf93769c8e5c3f87e9adda660221c411194b254d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEBGA2001033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d40145a8d356b1c4c381bd5d4924eef0e109dea20183b7f095f67a8031766d. 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/SEBGA2001034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9793d2d35b4edd32810054e11de436246f0b41eb3c168adfb9caeaf669afe16b. 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/SEBGA2001035.