CTY-PROOF · RECORDED TERMINAL · SELECTABLE TEXT, NOT VIDEO

A Codex session dies. A new Claude session resumes it. Proven, not staged.

This is a real recording of Continuity's cross-agent persistence proof. A Codex session records work, then exits. The harness injects a random nonce into the ledger after Codex is gone. A fresh Claude session — with no shared memory — retrieves that nonce through Continuity, completes the task, and the ledger verifies. Correct use of a nonce that never touched either session proves the resume came from Continuity retrieval, not model memory or luck.

Reproduce it yourself

pip install continuity-mcp then, from a repo checkout, make cross-agent-persistence-proof. Same harness, same result. The proof and its ledger artifact are open source and run in public CI.

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