Mike Lévy (born 24 June 1985), known professionally as Gesaffelstein (), is a French music programmer, DJ, songwriter and producer from Lyon. Often called the "Dark Prince of Techno", he has worked al
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 0xcb5fe5a4e035f877fe47b4fe22f0146ad76a1780104bba982e57ff3ab4bb2c5c. 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/e3f6da52-97d4-4a52-bd6a-59514af89d7b.json and https://artists.proofprofile.net/proofs/artist/e3f6da52-97d4-4a52-bd6a-59514af89d7b.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 0x25cf0508cb0bdf1e4dd674ad0d88c1e8ee70cba13a59dac907b1229ee1bcbe30. 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/FRZ111300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e516207bb9bc97c5210466f95d8340c849399764adf2fb29a086e264dcafa9. 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/FRZ111300562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea5dac214aff8fa3454b488ae139346589562845d75f1ad15bc4759133248ae. 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/FR8Q11100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473c52340a87be460bf2332f0e2795291a6789ab67d1222f0c5ccc318bb892d0. 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/USQX91803311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f24bffdcd35a3ad8dfb9d318ee0e9e6f924c710d4898b0bb8644406030e80. 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/USQX91803313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b2de4dfa156e6c8d9d3558698ebfd8faaeffaea0d88188af492133426316de. 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/USQX91803314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6deaaaab7e634d5035d55fdacffc8ec5f62cc0209f0ab465285904fca5931c20. 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/USQX91803315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75aa0e885be049954742a3da28add247859f5ce02fb5e6e785857550dc07f919. 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/USQX91803312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83402d257b1403d86c89062175cf0161d70024b33af664f6da63a528d6c94eb7. 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/USQX91803316.
Forever (feat. The Hacker & Electric Youth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9c98a713822b895bbaf1039673ceb25f90f6a9812e04fec6a9a3bc1845647c. 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/USQX91803317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a480e3317c5dd894044578e92bda8ef342c4ca1a8f59b7c459ad5f8b236c00. 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/USQX91803318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7cff670073043a67f7c7ec211c9502f8492ffe51a1d976578846ce3993d141. 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/USQX91803319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c08485f121d35173d2b651329e1a94caa53e334fc0023b19fa629477d7c5c3. 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/USQX91803320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb278b262c526876e14062d098d494014a3bf7f85f74a8a6bd4731ea7b6867d9. 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/USUG11800570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbffff426352b881f0bb823a0729d98cb29a055cf810f45f78e05e0257f827e. 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/CAT391100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a30bb0e6e7fb40fe335427e0a7fe373096109c86c4696a8c37f08085ba04250. 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/USUM72412585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd880c52cf2a6e54b3dd618d3300522af460641e5d6d2aea240c1bc7d69833ac3. 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/USUG11800566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dc4b247b6ad0591715ef5d7c5f9d96333c0f6c610561c4c3593ef39f3b3ef6. 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/USSM12302369.
ASHLEY'S HEARTBEAT (Prod. Gesaffelstein)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd949c2265bfc2a1c6f2c5819486b27835189c85112a87472c0405a2c11b0e72d. 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/USSM12302367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf142b5be057a1dbc7b876165abf72205c6c2470da69d5b562b5b50a850a14e41. 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/USSM12302368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd656bccf9c834a9064e68432a8705778a719b0f27f0c9b82ec3fdd0672175bfe. 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/USSM12302370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043f86eb96ce9ae3df54886fdff7d5231fb203ec0d15064502756256fac98d85. 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/USSM12109672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b412aeb4f0896a6b31db4bc815c3b6f465f29c708434bcce80d826a4c89e4aa. 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/USSM12109671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac5bbab25b3b054562634a053614eb1fc4717da55694299c0f56ad5b92e268b. 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/USSM12109673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043f86eb96ce9ae3df54886fdff7d5231fb203ec0d15064502756256fac98d85. 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/USSM12109672.