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 0x95f29d6f8b2e89ca897c9389f6b076bd8cda2e0900e68423a6958c03d8e39b41. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa2eda50-fb98-4182-97b1-ef029ebaad13.json and https://artists.proofprofile.net/proofs/artist/aa2eda50-fb98-4182-97b1-ef029ebaad13.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 0x291200a8b97eeaa25c1c61db6dec8efee2b317493cbf1f4b0094f614cf4a1f10. 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/QZFZ72229519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a1ec6629604c16b3e59952ed259841a44ca83ae6510b7b4d4ff08f5669e7d1. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZDA72278089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae789b7e0a7fcd2d28f82f05c9165de7665ccc09541bddcebc3d8db7a373ea0. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZES82230469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0714c9801d2ef4e09be9f49e02213e7022a09d7c3a6b6c12b73426a3d0a18fb7. 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/QZES82231449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb437fa1ae531506711ba62dbf2f50cee66b080f6e4c562ebad5f4d08f5f2eb5. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6H2263088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1648ef88a832a00c5d89190583bf56b465087071a7b6e57156e8f26ad12af441. 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/QZTAS2242933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0709059d7ee944aa147cce5256f7b4a32a6d47b7faa19ed3c12919773e6875. 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/QZHN52357922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc269fa77729adc9779dc495cb24df81be44fb8a5ecccb12f92d3104c3197d0c. 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/QZNWS2333614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51be63fcdb0e4d5f13d9bd3f0413b83b49907bed4ea048645a2780bed0ae90fd. 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/QZTAT2349973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf654c977a21c404fad7b8c565c222ff414dab46f2bc175c1ab6537ff8ee1fd1a. 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/QZWFH2377631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9239ece74968e290f72174d7ba223b685150e3eb8b8fd0847ed4d0ad951e61c5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZDA82478103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de5b229b2367a5d68da388283cdb84fb0de0d668c4d770a0c85640ac12d31ab. 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/QZTB82432890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cebc74cb6c6fb0979a6442f50e4ccbee21fe97c8b24325d06d0d5fc9e37ded1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ7L2400883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2283ef45cdbdf4cdeb5a1d5fcfd6ea80e7c567f1b381b609b4bb7e0204729d99. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA82530211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6600e116bd8b350e52247994dcf416d800a81863940263ada19490d8930b05b1. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZDA82528863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5761e0410393db8a6bd9df3bf71210bf885a071c5daf4df98d38d083065e8e2f. 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/QZES82570806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e0f040d0f5801b20b66ee9cfbac7c621d2578af52f7faa3a175a55a2b553d. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/QZES92556263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e1178b17bf5a1155629821a6cb58c9bfdf0ee94e6623cd44c80965635f96e8. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZES92576037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1838ae01a1a9008ec775224dde5abb624e7d05a0aa7c6151c3ea542b49404. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZES92556248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd85e6fae030149a45c8f9e141921343328b77fde150a7780b8d75e73e15ace. 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/QZES92549995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b70e242eb84a3cfe3da263828c50b792e7fa3589c925d66ba4468458b901bcd. 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/QZES92560766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dddf2e6bfc996559485ea69fbab83c331ddb08aa2f016e08670cebfd17dada. 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/QZES92560763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1253886c47d1d426ec95d4715db7d840e83cb8f116303d7532b06525d1c146. 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/QZES92560764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1a9eb1717998aa91b5ce7b691a38821e734ff68310b64da1ab181d5b4f56dc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZES92560765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769fd45b147b2ca933ef8cb35c0e3f08d47d199a9c10ad53c305fbf6015ae8e5. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZES92560767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab80c3158e44be2ad4d8b2d3ab341c79a8f1a88836f9368482f66ee3f9639176. 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/QZES92560760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d56edebfa8404fc82577fdb9a0e06a80e4fa82e584165d8a72535f9f9fbb07. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZES92560762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55da9d7f460533c94c1caf211f3460ce8cfb26a0e65640f168d6b17e5183ed3. 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/QZES92560759.