Stephen Lewis Jerzak (born May 5, 1992) is an American alternative-pop musician, singer, and songwriter from La Crosse, Wisconsin. Some of his notable singles include "Cute" which gained popularity on
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 0x809ad66274b45a33b33aa6827badeeb7287915d2c4fe7613d0b919bd3b40186c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2462e2f2-0e53-450e-a891-4970ac0ab902.json and https://artists.proofprofile.net/proofs/artist/2462e2f2-0e53-450e-a891-4970ac0ab902.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 0x838641a6378845e523ceb63ab28182ea75f0d50d55bb1fa76d7f8091da1f9ce1. 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/USUM71108958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6296e9b417ad67e2cecee4f79f4ed10305429e5291aa97cd443f5a13e582ca0. 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/USUM71108961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec65c5afe03422eccc748b423aa5d050fc32eb7759daf610da4c99efafb3aa33. 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/USUM71108964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f81548ce783022b7cc0e2eab0aa58d605607bbd0687564136fe86ca727fe59. 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/USUM71108965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292214ae8b148b34972b31b97db3b30fba14b05f557053acde9e7794a0b7ed9b. 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/USUM71018379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8488c14534c1f908411a21c3c6a1947cf59c03785a85ed3afa0f8a4013447e1. 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/USUM71108967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e246c0ce4e43cf68ab77abc16da5e64415ce45d1fc641792407706d5627ecc5. 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/USUM71108959.
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 0x7ce464afdfb21915b212066fa47104382df715d969821f3f56acbd3a30e20ea8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USUM71108960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4d6e809d658d2ea2437158c27bf8c1f3b0a592f52c528c8c98b532921b397c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USUM71108963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf1bea61b1bf164c349de98f971216d8eeedf5ceeda492578e69573c7a66280. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USUM71108966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb7e576cfc3edf9ec255a5222e81f81d51c75253ec75ca0d65fa34714124e87. 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/USUM71026036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ba82ad761d3d6b0955d04412dfeea8a03527517da311cf58323afa7e5133b2. 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/USUM71026038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b6a0617a3afe6142eaf853ca34e49564a883886defd6153c0bc1ec0ed5a20. 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/USUM71026042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32f3c42786c7cc27ba89ad0b0bb5937e813445f3d33e239e9af5ded0832d6f1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USUM71026030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d89c80679680449dfd1bcf1aa5d6eeb730800fe94d2f687bac13fc2949f358. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USUM71026035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad668f4b41f016cd7ce57fb11577e273d3461c58d541452613f39224c74805d9. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USUM71026037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5c2c680f9fde6f0091dae82b933444f677956b45bda191048f3dd8fdc386f8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USUM71026039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c9f53d9263ba6c1693c612d214709a16c235d1158808cc47b76ecb87d5fa4e. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/USUM71026040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c44055aeeecec373a8ac247a863751f8e87132513b1f013cee60310119a86a. 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/USTCB0937690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6565e7fabedce444fbfa1931159f49406b7f1eab5a226e6b886bcaa638a2454. 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/USTCB0938696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6722b0b9fe629aea5ca718e7b8858dc45013e2fb661ec5a96f845ceab1317011. 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/USTCB0938735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd32cfca80e99125e9db181aa6af8614e03a2cb0e7407c74472a9025dab4a1c. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USTCB0938734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a17b3d90ed506556ca18e4bac6dacfe942933497b295967e9122573f5d417a2. 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/USTC90962131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b50ed297c466e33eb61e80ad406a507e376815245a6b418141d8c3268598ba1. 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/USTC80987485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ec9e4c3758c7407ad26f578959d9f018adb2bca0b426890fc87e7fc4b90221. 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/USTC80987495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c0d0502b316e78cb10636d30bbe860aeff83ec182b4fe52a491c526e924d8c. 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/USTC80987497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023abe84e0ce22ff1a12eaea98046fb84c4f94abce02cf388ed60ef6d45d205. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USTC80987460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f549a07adcdf87e393427cb6afee4fbb2c51bbd7100b7ef3de13ad4b7ef152. 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/USTC80987522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602bdd95f877866851dd09fab93fe13280b9a551f11ded7bf02fcff1d31b45d5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USTC70838631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e3a5fb422b6d83f5755a94d448ea55ad292ec23f8714943ac806a49fef45ee. 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/USTC70838722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7e3bfbcc0b2e7eda4ceb49fbf68fb6fbbc3680a3c44cc5a99c54f011de4ff5. 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/USTC70838739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35cbbbaf28133f02789a8db6a228d151bc2accdc82e4d750601236f51e80aa25. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USTC70838684.