# USC Testnet Releases

This page lists and describes Docker Images created after the public launch. 

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Creditcoin USC docker image numbers may not be consecutive since some internal versions are not publicly released. We recommend to always use the latest version number available.
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### USC Testnet V2 Docker Image Releases

<table><thead><tr><th width="166">Version</th><th width="124">Released on</th><th>Change</th></tr></thead><tbody><tr><td>3.103.0-testnet</td><td>2026-04-01</td><td><p></p><ul><li>Introduced attestation chain reversion capabilities</li><li>Increased attestor reliability and networking controls</li><li>Enhanced proof-gen API and added stress testing</li><li>Introduced archiver service</li><li>Improved indexer and runtime features</li></ul></td></tr><tr><td>3.100.0-testnet</td><td>2026-03-11</td><td><ul><li>Added on-chain maturity strategies</li><li>Improved attestation reliability and ordering</li><li>Added operator controls for elections and updates</li><li>Enhanced proof generation and validation pipeline</li><li>Standardized digest and continuity handling</li></ul></td></tr><tr><td>3.92.0-testnet</td><td>2026-02-10</td><td><ul><li>Improved EVM gas estimation reliability</li><li>Enhanced ChainInfo precompile and query outputs</li><li>Improved proof generation pipeline (GraphQL integration)</li><li>Fixed continuity and checkpoint edge cases</li></ul></td></tr><tr><td>3.87.0-testnet</td><td>2026-01-14</td><td><ul><li>Implemented native query verifier, removing old zk proving infrastructure.</li><li>Attestors transitioned to run their own p2p network</li><li>Overhauled attestation &#x26; continuity proof system (new proof model, smaller data, better validation, improved pool &#x26; fork handling)</li><li>Improved EVM precompiles and gas efficiency (block prover optimizations, new chain info methods)</li><li>Introduced proof-gen API server to efficiently produce continuity and merkle proofs</li></ul></td></tr></tbody></table>

### USC Testnet V1 Docker Image Releases

<table><thead><tr><th width="166">Version</th><th width="124">Released on</th><th>Change</th></tr></thead><tbody><tr><td>3.65.0-testnet</td><td>2025-10-22</td><td><ul><li>Improved attestation validation and removed rewards</li><li>Enhanced attestor reliability and configuration</li><li>Refactored proof verification system</li></ul></td></tr><tr><td>3.59.0-testnet</td><td>2025-09-11</td><td><ul><li>Refactored prover and caching/logging</li><li>Rewrote attestor engine (sync, better validation)</li><li>Made config changes epoch-aware</li></ul></td></tr><tr><td>3.55.0-testnet</td><td>2025-09-04</td><td><ul><li>Asstestors: Improved block fetching, interval handling, and restart logic</li><li>Target sample size changes now apply at epoch boundaries</li></ul></td></tr><tr><td>3.49.0-testnet</td><td>2025-08-27</td><td><ul><li>Attestors: Restart attestation production when attestation interval changes</li></ul></td></tr><tr><td>3.48.0-testnet</td><td>2025-09-26</td><td><ul><li>Attestors: Improved gossip and vote propagation</li></ul></td></tr><tr><td>3.47.0-testnet</td><td>2025-09-13</td><td><ul><li>Runtime configurable vote acceptance window added</li><li>Indexer: Use chain genesis hash instead of a hardcoded value</li></ul></td></tr><tr><td>3.46.0-testnet</td><td>2025-09-12</td><td><ul><li>Voting rounds config: Fixed an issue where round config wasn't being initialized when not yet set</li></ul></td></tr><tr><td>3.45.0-testnet</td><td>2025-09-12</td><td><ul><li>Reworked attestor network <code>last_digest</code> tracking and gossip window logic</li><li>Fixed error in attestation fragment creation in prover</li></ul></td></tr><tr><td>3.44.0-testnet</td><td>2025-09-08</td><td><ul><li>Initial testnet release tag with functioning attestation and transaction proving cross chain infrastructure</li></ul></td></tr></tbody></table>