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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c85dc9ff1bf49cfb31a99f6e727c13921ed57275375e1f1a2548769d5da364. 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/ab5e0ae9-34a7-424b-884b-801157a2e3a8.json and https://artists.proofprofile.net/proofs/artist/ab5e0ae9-34a7-424b-884b-801157a2e3a8.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3670c65a6ff5b3d91418fdf5c8c617dd8b824dc447784568e0e958e5f99db4c7. 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/USRE49900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4b5531b389db2215ff27ac86b6b0252ff4b0ca9eba0ed5a99f25ed6d43ca3c. 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/USRE49900033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c92641a4d869b5d61f557e88f25f93d51b6e1351f18dae5a7e1dfb3ec8d1dd. 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/USRE49900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e21dbbf90daf81b6430f01b009342c159779a51a6c0730280596893f26bf4. 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/USRE49900035.
Throw Your Sets (feat. Crucial Conflict)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d315d38c34bb15bf098c776fcd23efd90a030c14028e6c1098e082901109138. 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/USRE49900036.
Undercover Freaks (feat. Too Short & T-Rock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55fd9edb33149bf04b8a467a036e46a9b8a31c4e3fdf2042b583bcfe408f2c9. 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/USRE49900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbf5cd55dafeaf8db471ad1c2796b4172aee5f54ee63e87bf2ad0cb4cdccd4a. 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/USRE49900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637e19e1e5a940f0e6685f8bb961c9c1a575c8d57e78620b8e209e9c073da803. 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/USRE49900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed82519c11047f4b650dea304e4894da4f4f3cf870024d543983edc7fede454. 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/USRE49900039.
Get Buck, Get Wild (feat. Crunchy Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615485f233724667005ce3cfca0f8bbc9b3266b3f532792c996120dc41721e98. 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/USRE49900040.
What You Lookin' For (feat. Project Pat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f34487679fe4a755fdfd6fa760350aa3e883052ddb59c076e818a219c282af. 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/USRE49900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c7c74c7379167273538c2cc3f1ef04d40dcbd1b1ac45dc7e31380f654009bd. 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/USRE49900044.
Hypnotize Cash Money (feat. Hot Boyz, BG, Juvenile & Big Tymers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1c27929d85fb163320cc993c69c7e5424aea614745d08b0335b4ee4aec256. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRE49900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0aec5e08e2aa930124c6456a43c2a9a631dcfc1b85ac8f41b4c400833bc281. 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/USRE49900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747e4ceaf2ce26e1bd4b94c6569e8e3b8e71d71f60e9916c80361244980c3bf5. 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/USRE49900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b0b902f873f2b8c0e7f18b6295a2994faa4c9b69b707c2a2a2243d629b3165. 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/USRE49900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d74f05b26ee9fe27a951da860aca89a4ed6f0deeef610a7930e791a1ce1884e. 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/USSM11308206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af7b8b11013ca352b455c37523176b1802c6f2be76be7b16e63f0556d1f36e0. 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/USRE49900051.
Triple Six Clubhouse (feat. Lord Infamous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8147b073255a5c7b0244f41df9e3ccc929e8bdbfaa4ffc58b2e206c7b1b502. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRE49900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee06d0042a223f8800fdd9cd48154b3d5a6b85e899b2e09850ec06950c924c. 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/USRE49900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8315ba79339df87951bc35245c2d77a36dc6a9ab8b1e506ba32bbcf85fb8bf. 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/USRE49900054.
2000s Hip-Hop Classics - Top Hip-Hop Tracks From 1999-2009
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d74f05b26ee9fe27a951da860aca89a4ed6f0deeef610a7930e791a1ce1884e. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/USSM11308206.