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 0x9ea3fd6dac858e5420825f61e99822de32b02da2a061e6aabbbdb9c674d7692e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/466bd162-a18a-4204-8c27-1342d1fd81ba.json and https://artists.proofprofile.net/proofs/artist/466bd162-a18a-4204-8c27-1342d1fd81ba.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 0x9f2b6a94cb548045d9aa6f3b12a0cf697087f2a12f2c42b327df820bd1169c7f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T12:00:18Z), 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/QZNWU2026241.
In The Shadows (SoundFactory ShortCut) - SoundFactory Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426636eb81112f34989c606d381ead71cac76c457dc222a6895a9670106f424a. 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/QZNWU2026242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e6eb9169debbbe04eacd2b76fc94bb5c4ca8403dc835c405be3829d15e3ea5. 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/QZTB92216729.
All Around The World (SoundFactory ShortCut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584cfdb53455370ca091b54abd4b8a9c2b54d2ef6fa1938031aca80b135629e6. 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/QZDA82397861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6b77c0d03f5ca7fa72c01735fa6a3e66852c1ef1b1fc84437f15376e8828a0. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFP2380588.
Not That Kind Of Girl (SoundFactory ShortCut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ad5c1ba1137700dabe54d96725eae8b7fde61d68b0dd0863486320437f496b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:42Z), 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/QZFZ72439684.
Not That Kind Of Girl (SoundFactory Extacy Dub)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7983ef40f4e4fbc0a7705b727855f0aeb2389a1f056427cd873c632b6105e2a. 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/QZFZ72439688.
When The Heartache Is Over (SoundFactory ShortCut)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6808817f3bacbf8fd1e1e891cb5b77d066324678cc1bdfa5bf20c9e33e0d2c15. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPLS2463080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8123e1841ba37ff9d9e9f3e21a3c205c48873707dc31e41fa1a3a7e09f507924. 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/QZFZ42531599.