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 0xb6982bd5870158c6607637ec078f348dd97d9ae63300a00245addf529d4dbe01. 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/c13931d6-c828-4382-ae81-b1dfe2cb6f8f.json and https://artists.proofprofile.net/proofs/artist/c13931d6-c828-4382-ae81-b1dfe2cb6f8f.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 0xf05bf1c2dbf9fa2176f62dd67f65d2aba78fd94c9426d16a5129db4181a43a0d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/DEK790117001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271a4497e28ed8d9c7cf8613dbd0ffd2fb824d180e0e0bf475488a5b01e45533. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEA310902551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35555809e7318f27e2e41a7b9cef40d52d66689fc936e66ef7607a420b7cfefd. 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/DEA310902552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdf3d687373f284bf423073f4be2fc24ae47f75f17495b5dfc4b7f2494812c5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEA310902553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a0df5768fafb253abe5e80f0c21b2115073a5015511c2b4113bc6e19e56e45. 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/DEA310902557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac940d291c1b00c31833fd910014af5d60dee02884b41233e1591a3d004e03a7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEA310903996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf8354e00e168aa937e103bdfa69fa207ebd1321bebcb71269a69c9d9a8d0e9. 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/DEA310904007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac940d291c1b00c31833fd910014af5d60dee02884b41233e1591a3d004e03a7. 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/DEA310903996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914ff8a65c3721af05b38c6cc6aae182f3dbbc6aa81ad6c205a689f0b744a7f5. 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/DEA310904253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d4e9e5ea90ae36bcbfe0ebb275bee79c666926f8ec96e780b075af693d4d46. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/DEA310904254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f46899eb0b9374b911319321f394f3d3635288109e839710f74e2cad96b364. 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/DEA310903992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f46899eb0b9374b911319321f394f3d3635288109e839710f74e2cad96b364. 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/DEA310903992.
The Best Of Mark 'Oh - Never Stopped Livin' That F
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02e7a1ffe008a5aa02f5cd92142a85e340209de3ba3f055064d7527678bad61. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEA310904862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15d669f0f838915ac0cc0a15b211a1a69a2ca9c05b0ba570d851de421cd76e3. 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/DEA310904863.
Randy (Never Stop That Feeling) (Remixes)
Randy (never Stop That Feeling) (Westbam Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b771320fdef5af9f1a219926c663525d2c0e1b362fc9a3b9e928146e578d14. 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/DEA311406101.
Droste Hörst Du Mich - Original Short Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c699f1292e1c2f92bc30afa6603f0b8d3057cecea56fbe47dd06d85d820fa98. 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/DEA310904001.
I Can't Get No (Wahaha) - Original Short Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96a57248276ad184691abbea1e5b08451cdea89bfc6092331eff29a22dcb59c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/DEA310904005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb3ab14199dd1bf46b2b14b81133892665c4473a15961e02cb4eaee952f7fbc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEA310904002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4ec222119d050a0a3b06d8c0d9faffa0965cd4b72d69c997b77574b879d594. 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/DEA310904008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0254c9dfd71dbab101d1deac0c9d373cd1cd4a75bd912668f710e2b7d0e3fb7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEA310904859.
Never Stop That Feeling 2001 - Video Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30baab60f1405b3c26abb787a038874db6e29e6ab03a48f4f197e0e744b730fc. 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/DEA310904003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9495523e152d049372344522504a2b07a8840146bcd2d86dca416834b7e3f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEA310903997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff4cb58d27539f2833b75d7e32140f7b84d2868f5c673e4438ab49f8f128e31. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEA310904861.
The Sparrows And The Nightingales - Original Short Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ad4508c4575140473c2646f7adb24e4c6d09d8a1065babc527bcb5fa04e3ae. 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/DEA310904006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb3ab14199dd1bf46b2b14b81133892665c4473a15961e02cb4eaee952f7fbc. 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/DEA310904002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac940d291c1b00c31833fd910014af5d60dee02884b41233e1591a3d004e03a7. 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/DEA310903996.
The Sparrows And The Nightingales (Original Short
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ad4508c4575140473c2646f7adb24e4c6d09d8a1065babc527bcb5fa04e3ae. 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/DEA310904006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcc7a12afae78d141e348f82c510901210e6419c8c02c94febbf91b54781644. 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/DEA310904000.