John Joseph Theodore Rzeznik (; born December 5, 1965) is an American musician, singer, songwriter, and producer. He is best known as the founder, guitarist and frontman of the rock band Goo Goo Dolls
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 0x2b83dddae89742d4ba2ab9ffc2c0ff28c32aa4e7f82bb254a8e634af24fa4b5c. 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/26337cc0-0fb0-4aa1-a392-f75672f6999a.json and https://artists.proofprofile.net/proofs/artist/26337cc0-0fb0-4aa1-a392-f75672f6999a.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 0x9cf573cc14c1f6bfc5c24e32549205ee757a80a5e03aac089cdb0f65df2682f4. 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/USAT21400860.
Lightning (feat. John Rzeznik) - EDX's Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84cacb425a6e041bd760529bd8aff368a6ff718bb46f4ae09ff246401ddce1c. 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/USAT21402817.
Lightning (feat. John Rzeznik) - Sex Panther Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a225cbb357a4313c0d1374a521474950d416d091ca5561f4664d6b60c9d67b. 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/USAT21403092.
Lightning (feat. John Rzeznik) - Audiobot Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e92f64037b7aad4f747e89792d913a0120b72ebaf0b617a2d823e2e0913bdae. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USAT21402815.
Reimagined for Ballet Class, Vol. 1: Songs from the 90s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b711f74f449aabcba1f625d4cce17c8178e69dec2bc9473a0d27ff17e61e355. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBKPL1975787.
Lightning (feat. John Rzeznik) - Dash Berlin 4AM Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70de5d1ac8fb01816c78baf054715f46d40d86a830505b79cb4eaf6b1f67e713. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USAT21402813.
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
Lightning (feat. John Rzeznik) - Jump Smokers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ac023699a1b9939aa8ff99e8db0a3e594edcc15478ff9925f59b42b56777a7. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USAT21402818.
Relaxing Piano Covers: 14 Beautifully Chilled Arrangements of Pop Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9dd0b53586ed2fcde567df004f844ba5d5510e8fd218a019282243c5173ddd. 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/GBMNA1901516.