I am opening PNPK, an integrated SKYGRID transaction-safety architecture, for technical review. The design introduces two AWS-backed workflows: POST /pnpk/intake Receives a structured transaction and evidence record containing elements such as a network identifier, transaction hash, wallet address, evidence digest, timestamp, nonce, operator condition, and signature. POST /operator/condition Records an operator safety or recovery condition and connects it to SKYGRID emergency routing and controlled response playbooks. The objective is not to claim automatic reversal of completed blockchain transactions. The objective is to make transaction intent, evidence integrity, chronology, authorization, and recovery conditions independently verifiable. The architecture currently uses: • Amazon API Gateway • AWS Lambda • Amazon EventBridge • Amazon DynamoDB • replay and idempotency controls • fail-closed processing I would especially value feedback on the threat model, signature envelope, replay protection, evidence-digest format, chain-neutral identifiers, and safe handling of recovery metadata. No PNPK payload should contain a seed phrase or plaintext private key. #aws #security #web3 #serverless #cybersecurity

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