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 0x2951efcf2be3767aa796df40de62c9966b0a4c879292ad1685a7196073421463. 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/019b005a-e4fb-4540-9427-7a51f267246f.json and https://artists.proofprofile.net/proofs/artist/019b005a-e4fb-4540-9427-7a51f267246f.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 0x1d55b66a6b321b4542c0a812e1aca6d8413ba7d848cfe4930d91a0c162b87510. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLV62001505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07d0c8831f9e8fb894ae0bccf1519e4fa67581b8bd24dc2f12bbbca2e66818d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2468102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99d75cb12a6bfd4416eece865730e45d5eb3b743997af106d1b1e5f909747ff. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2436001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e305fd2eed1984b04b9dcfc2719e852391a22abb3ace86de0fdce7e450104bf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2436002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f65f8dfa39e1f8b9d336a2d291dbe07063ab9250cb6fdc68814c9169092ab68. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2436003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cbbc7bb83b68d0b3d809dd0a5b58d6bcc6d369ade124a24fb1229c12f3b1af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR2398048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2223b9a742dc567ed624567f513d498f20fe14a621f5361401316a6a9ee1b59. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CA5KR2398051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299987d9c3d8d0f676015a4a860e47919027ba196c3d7b13c01f052702f86f12. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CA5KR2398049.
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 0xe47f1c19bf5a5ab92e5a5a3ad7a0c2b63e55c60c6eb2eeb7117eeecbb61e2ecb. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CA5KR2398050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e736dc6aa6aa7b7facabe2502da0135f0db5d8f81b3409423b00482963412e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB8KE2313606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29883307fcc2a286d4f76200019aca6c28858498e747a97b3fcd3ca40f8519a0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA5KR2336387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b600cf67088e19df9f048361a46d34069bad6c0b9c39fce2f199cc909c74f7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CA5KR2336388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e3ff950fd2a9b63c2ba134615b3d1ce273d04a1c95ce6e81a31b7f72ca6aa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CA5KR2336390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa996d6c58b687bb410bdae52ed794902974e2f839ca214fa56cec1c9f624691. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBKQU2189212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ff7506c0c32228e6c354578dcab63fc3e137c3b1b71e9be9ade3f0ffbd7518. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2189213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa16e52255550f80dcb8dc67494f68b82ba960206be5e49c55fe655e0e7d411. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2167158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7bba42c826be9eeafc6d65c32051e4162e7e6b9ece4a9aba454b4da0f9c46b. 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/CA5KR2125526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab476644786db5a47d7af4527abe9ceeceab443b545d01555d203a2185884a5f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/UKGHE1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc69b8e9ad660f2af2306d833ea845318e005587797593a7d353a96f47b92557. 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/CA5KR2014509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f7aeee3889a737349296364b53f13605e758ea25d940ebe3b3a3254e67ad8b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2014510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b2e1077644a91ee52e9361fe8af7e80e7742286feed2bd4a263ffa534c869e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBSJN1300953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3886c8d0eda20a427b785c6d1c93669c22d0e9658eb97c0798eb97f51aa38040. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRIDO1911478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1624f282f3bd9f3b4a81c1c49b01f4d493978a238639db6c52afe4f3c88aa7e5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBXJH1000150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261187853927f9b90a1b1221d1df37b4029432ad6b7f34ff69f74889241515c0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBHYE1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c438105b317b0a610a2c93c5347df9efbf2d4c25cf4f808bd0e740b5b80604. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBHYE1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2e88a9ce80327c502f8e6ed5faa4e4f4155c22bd7819b0206fba2b3419a02. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBHYE1900003.
Captivated (ft. Tali) / Diversion (ft. Rick Payne)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8268d395f2189b0f8037e69ab98bc3538c9b8834b604b4456b87963f5c7fa4a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBSJN1300827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7373d586c2f79cbe3de1b3e28e7b582db501cf8d8925045db657975aaddf3fe0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GB8KE1851811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5bcdc52a41b79b2995da7a358152fab78d355bbe57de0fc1ceb9955f635385. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GB8KE1851813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3efe99be76c50ea2810df5a85c6d23557992c01d83b15f02c26fe040f39327. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLCK41038953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c00638ab321f301939a7d31b724b27e767bbc233ef7e72afdbb81f8a5c2633. 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/GBXJH1000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971e04f3c5d5bcc549cb09c93528fb14aebfc24815fe0676df0538235fd00fc7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBXJH1000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9389b0f6b9d8bd3ba45c6d4e3eed1730d70f429e51b70f19077ac8cd7bb18c1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK41038280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f0deee2f84d861d060ccde7d4a1251620e2eb076201c509891ed54c8a4f92e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLCK41037262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa611e931ca694826d60f1387df8893f0bebd4013bcb7c66417c91004d8b05. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:06Z), 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/NLCK41037261.
Initiate (Ill Truth Remix) / Change My Mind
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8b8e7391b5969a61803017bed308e20a2fd3bfe5991fcb333308dac52ff3ce. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBPWR1900032.
Computers Are Learning - Ill Truth Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4dea0ee439af2c59c0f2ff644dfd3d5a49e0e81357019f13165281d6e1a3ed. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRIDO1911595.