Zak David Zilesnick (born ), better known professionally as Zak Abel, is an English singer, songwriter, and musician. He has also been an English Cadet national table tennis champion. He is known for
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 0x49a26c224bbc5282b5bd6ff06bd5655c199b212f2f2d2b4566b060f61de2648d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e91fe161-7c78-4451-bb58-6ce3c8711a29.json and https://artists.proofprofile.net/proofs/artist/e91fe161-7c78-4451-bb58-6ce3c8711a29.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 0xcb5dfc6d3ed4eacb1f0cf0a6c8715cc6d9b266b4134a39f2e8c89b41914dcf11. 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/NOG842305070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00550c9bf77d33ef1628b8d1859873b183f86b2c605eb926c8c8f890b5f7af4f. 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/USRC12400376.
For Life (feat. Zak Abel & Nile Rodgers) - Vandelux Remix
For Life (feat. Zak Abel & Nile Rodgers) [Vandelux Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b74ebcc18d453a61e560b1cfe83acd046bb98e58e05a2232660fe099ca3dc3d. 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/USRC12401747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d036b984e88e2edc97c654fac83813d64571acb3438d70b8cbaa58fd6ca6e. 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/SEBGA2000285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72e9f9cf0a8e596ceaf7cc319579a7027fa8e964357577e0c7ff5a8da3008d7. 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/NOG842305010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3addba8229e6945c9d0594686d24890031fde7b60efbb7c2176f162da0006. 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/QZLBC2311259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e136a1271ef9586c23b716abf91a8eccaaa5e2cfd0d143412f8573fd34d41a. 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/GBUM71806191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c7b9c602511dbfb6ea2b645cd181653c752ce0c8d294a2e7d6ff3a0123395. 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/NOUM72000245.
Madness (feat. Zak Abel) - Martin Jensen Remix
Madness (feat. Zak Abel) [Martin Jensen Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeceeb382e9a25066dfc0cf67a970eb2ca27d2b972aedf5c421ce19def7b9cd24. 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/USQX92202899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060c7b9c602511dbfb6ea2b645cd181653c752ce0c8d294a2e7d6ff3a0123395. 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/NOUM72000245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322e5563b943fa27edcd6e244d61a97593ebbc5caa138e997e3bbdc6ccd5d122. 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/NOUM72000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cdae39900d1d2e4d634f920eda3744543e01542ad0065b297368ee602933a4. 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/GBUM71903984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cdae39900d1d2e4d634f920eda3744543e01542ad0065b297368ee602933a4. 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/GBUM71903984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cdae39900d1d2e4d634f920eda3744543e01542ad0065b297368ee602933a4. 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/GBUM71903984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795ece257e0aba4a6a991d4aebae55fff99571b2f208addb31c5197918bcca8b. 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/NOUM72100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c4ec40d8a927b7d4b7f8a5a99874aa6e88d4bf2a6253dd827de83110c07e06. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NOUM72100140.
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 0x5e7ba1dbb8f8eec47f0df81a15ca5e48572ef60312ff8ce3ecc83c0a094ce120. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/NOUM72100155.