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 0x8ae37da38869d3f156d19b5aa14360951b06c1a33cf10c7511e07b55d16216cc. 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/6cb289a8-3b85-48f5-bd91-aeba61e59ab5.json and https://artists.proofprofile.net/proofs/artist/6cb289a8-3b85-48f5-bd91-aeba61e59ab5.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 0x9f61bc46bbcf3e014d8eea9f75d20377146b14776f5bf61d515f8c1f1c3bd732. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:30Z), 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/QT3F42400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca418b3b15000af9051420bf5450e911f5a7f5045c15cd34de654f5b8df001. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QT3F42400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c94299c418628be71679b6336e3090b92141db62b146dbfc9c96ffd7663777b. 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/QT3F32469403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa622abacd2d0fdfbf07498c03470ffc40ed596a5a979a40bf3d4ba681954d364. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZFZ72514801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a12f8a7d6b9dab07fc232fab47de2266f6ce59590f15cbd46211e76b08d40c2. 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/QZFZ72514802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8274330733d8da8726d09be16628e0ac88e44315a24c613cecfd424dfba51b3f. 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/QZFZ72514804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdf9b7e1ed0e5a8394c50dd12f64d995a86f49d43f77d8ac1b374bd162d3464. 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/QZFZ72514806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192e59d70af801036192c87e19ccb71b9b504a4abdadb14d017c2c4c96cc6e12. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QT3F32470116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54194d5f30176d8c1f83719f01a08e378496719526bd9ad332fb54088c2571d. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QT3F32470118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71e3e37ae9d3d0f08cecf0c086b1b8c2e839d8913711426c400b57a478ad542. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:41:43Z), 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/QT3F32470119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71be43adcbb722ccc4c2a2dc34523fc165c13c8c6be52e0c10147ad9cb036767. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:31Z), 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/QT3F32470120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b227bd9ef8ef85a19391b8976440273255faf753189a58d7a72593c9387a46e. 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/QT3F32470121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cca9fb959e2b98edf6f9dd53f826fb2d25a21bc1b8246591b73a3caca199324. 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/QT3F32470123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8c9dda0871fcb146312589ca5ac583fa6fb7bf995797b227dd08be9547cc2a. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:17:54Z), 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/QT3F32470126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8f1ab57f110a91e206c5d9f321fa7d4fd219f4b72b429e4f57f076c35d3641. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QT3F32470127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009cfcd7e6e544fb862492ece01d570cf4ae469768c4efb9874fbc39ccd885e6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWS2564096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f5ba10c23909181aa986b598e61919a853bde9d727192c645f200ff506304e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:13Z), 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/QZNWS2564100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd02e847c4ae43f9800138363f68788817c181a516459e0be451f78468af123. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZNWS2564102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446ee8587a143e148557e2455a632c3a24b42a218610aaf964bb8b4ca536fc38. 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/QZNWS2564103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06270a22dda18f8035bd70a4115c84d75e74a40285863cb93754c03bd82f79cb. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:17Z), 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/QZTB62528554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63b9a238763db3db96f47d6cf33cb612bf7d274eb83e3c28e1f170528dcfd2f. 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/QZWFK2562670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1437f6ca82604ebe51d08cbe1cc8c357f89ce858514abcdd7dbcc216aadbe9. 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/QZZ7K2566007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd4f5868f645f0e64db2457995957875f1926c0497ce3647e2a3e8754f8a011. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ7L2584208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa5606ad0864842ecd9fc541aaa8ac55efb73d4233b55c18f2b110919b36ea0. 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/QT3EX2537740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09c54dd071c103daed05fb2f4912abe8e788eb368f61bab7e8578d3d8ab640c. 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/QT3FD2507949.