Hello everyone,

as some may know, Bitcoin uses DER-encoded signatures in its transactions. However, OpenSSL (which is used to verify them) accepts more than just the strict DER specification (it allows negative numbers, extra zero padding, extra bytes at the end, and perhaps more). As we don't like the de-facto specification of the Bitcoin block validity rules to depend on OpenSSL, we're trying to introduce a rule to make such non-standard signatures invalid. Obviously, that can't be done as long as any significant amount of clients on the network is creating these.

I've monitored all transactions the past weeks (1.4M transactions), and it seems 9641 of them contain at least one non-standard signature. Below is a list of the top 150 addresses that had coins used as inputs in such transactions, sorted by frequency. If you recognize any of these addresses, or have an idea of who owns them or what software they are using, please let me know. Thanks!

[BBE] [b.i] [google] 132qi1NCMqNB1bEU6HnmXmPQBsyV53Tv1q (592 x)

[BBE] [b.i] [google] 15DEU7jsJoQpgi6PTGjxJ32TQiApFtwfXP (559 x)

[BBE] [b.i] [google] 16moCd5oTg6XdvyM8rJkURtRpQrttZ4KFx (400 x)

[BBE] [b.i] [google] 1LG8ZFZZryWc8H3h8iktBNpXovni7P6Ve9 (335 x)

[BBE] [b.i] [google] 1DYcsSycrp5dAsHsodpv4cwwksfUNtg7MN (259 x)

[BBE] [b.i] [google] 1QJxz79cmdrqX9aAWV8vh4XXp9NRQpuhNE (240 x)

[BBE] [b.i] [google] 125iNj3y1figYKgFVoXaf88mCGoRxwXmRE (226 x)

[BBE] [b.i] [google] 1odh9G5QVtohMEycjTmmLg6aVTRNNtC26 (173 x)

[BBE] [b.i] [google] 1NqhoR6WPL1GthoiiMtXqEteqaK5XWkJRF (171 x)

[BBE] [b.i] [google] 1Ap2Yeont1eDmFbkNWEsHQbwHnJw7EjPBm (158 x)

[BBE] [b.i] [google] 1PrJNBJeGt44ZdoHZ8pRSzsMiVmuMXi9mX (156 x)

[BBE] [b.i] [google] 14YB3Tuwym4T9aJxT6eXTXRXWVLypwas77 (150 x)

[BBE] [b.i] [google] 1B4TVxR2ozssdbGorL2tBoBgcopAZZruBV (127 x)

[BBE] [b.i] [google] 1EWUna1WHDvRs3FDFJh9rCRSMT9MwjgJWT (126 x)

[BBE] [b.i] [google] 1EfBqGRp8GXEVZaCMHVQ5pXay41rHfnor4 (120 x)

[BBE] [b.i] [google] 1HKm9u2VcKP23AEUQRcPcjAyR4NSda97kC (111 x)

[BBE] [b.i] [google] 1PvtqFJb2twCJ67DSs8oFCDqtF7NngQ6Jw (82 x)

[BBE] [b.i] [google] 1CwusVDm8PxucEbBJ1moT7gdkkhmp1tcG8 (75 x)

[BBE] [b.i] [google] 1DvSJuFmDg2NZrt1uZ7asfTbhchvjP9Nbr (74 x)

[BBE] [b.i] [google] 1NuE71TnweKbhXtBPyo9GoJKYTio5hxB37 (72 x)

[BBE] [b.i] [google] 1BhF44x2EtJFvKHLGg8zSB3Dkd25A3q4Lp (70 x)

[BBE] [b.i] [google] 1GdFMzUiDdnu3DkQxdyrgDZVsCNrk3RQtE (63 x)

[BBE] [b.i] [google] 1PYVL91XyPzKPsL6bHjvYmd4bkkcUBm6qz (54 x)

[BBE] [b.i] [google] 1EMzCe8Q6KB7Sne64z3U34nVvmj5ueRg6a (54 x)

[BBE] [b.i] [google] 1BowP9AXuMTjiiR1u1AJjUwMNuRaZP9BSp (50 x)

[BBE] [b.i] [google] 1NAgDUBSotZKP4xSm8uaTkZ25Z5NNEprXK (44 x)

[BBE] [b.i] [google] 144JkmhfPDEyRfkLP21ie98Rx6pEs6eBAn (44 x)

[BBE] [b.i] [google] 1ALTa5wdGFmYPYYJkF1Sre9x2doGjCZ12b (41 x)

[BBE] [b.i] [google] 13XCZEMcfNayLddjT1fmgTu6mTu7mddGgr (41 x)

[BBE] [b.i] [google] 1EKtKALeoSjugVi2bVLsr3YvzLsqXyXsCs (38 x)

[BBE] [b.i] [google] 15tVpH12xqu9nMuxcayZNw2261iVUjywwH (38 x)

[BBE] [b.i] [google] 1LeVXmaxJ3RawczTY1MfvHN1h1qtZwRL8h (37 x)

[BBE] [b.i] [google] 184Y2GNzoZHpsEzpZcmoLxeda5gweyzHfs (36 x)

[BBE] [b.i] [google] 15uvrK8gGLxq6j85YM8nEyc3dNsdiMkYiH (36 x)

[BBE] [b.i] [google] 1Lxqx8e2e4Pq3jYjeD34rn9ExFmjPvhFNf (34 x)

[BBE] [b.i] [google] 1hDbFR7x1rwgCkMVsrBXzaYoBkGt89V8e (33 x)

[BBE] [b.i] [google] 15fkPeoZ8YfCSQD9tzveACNosKqd95fdPj (33 x)

[BBE] [b.i] [google] 13WQ45gQPeEnTwchuUc37HwrEaZWNtY1yA (33 x)

[BBE] [b.i] [google] 188BDtTAFJAn9WGn8h56mVpvth31RMYaXC (31 x)

[BBE] [b.i] [google] 14GnN2kGzij91Yd4KgCzdX8x5CAccHHe9x (31 x)

[BBE] [b.i] [google] 12M3URJVCKyxfU7THQ1KFVoeXPZoW5xkf5 (31 x)

[BBE] [b.i] [google] 14t7H7fsWkWo8qHgB7WjNgmny83KbVMp9z (30 x)

[BBE] [b.i] [google] 1NnghQNWY9MSgHNX56Z3VaL631fx3TK72K (29 x)

[BBE] [b.i] [google] 1HFWQz8mB6wf9GgrM3KuJaDVwbNxB3Gd7W (29 x)

[BBE] [b.i] [google] 14JzmMaSzxc9AGTsKCMV37M4zBJAg4yfRn (29 x)

[BBE] [b.i] [google] 1CZPvje299xsSHD9M3J2Cp3hV2h8tfYJLy (28 x)

[BBE] [b.i] [google] 1BQNHKi7YagT2Vozo1jsgnL1LgfAPfQ2MT (28 x)

[BBE] [b.i] [google] 1BGgRjZMqLn7XS1K8qiDxvTN71Up6wr7XA (27 x)

[BBE] [b.i] [google] 1Anq319DuqfFbEKtmfuANAR7mRqu7Scsvy (27 x)

[BBE] [b.i] [google] 1JkPjbHa3LPRfQEG9bGaVZwdn8jDarUVXF (25 x)

[BBE] [b.i] [google] 14XWpAuJ1xqWwyU9GxPUkChdFr7esYPGhN (23 x)

[BBE] [b.i] [google] 1RoLLsgNXws1fNfkXrUPAbhVmir5xkhFX (22 x)

[BBE] [b.i] [google] 1LXDi88VbsGFW69bqZ6dhdXQTH1ZQBgRYq (22 x)

[BBE] [b.i] [google] 12J1TqYw9FCXzWpC1zoMRTPGvquPJLAL4u (21 x)

[BBE] [b.i] [google] 1DSnduiZb91sKf5jTxkTQFyBYXmjDraSFX (20 x)

[BBE] [b.i] [google] 1BxfcSYLpSgu3ANaG49H7nNW1xvMqqvGPg (20 x)

[BBE] [b.i] [google] 1DMg1rA4U2NybNaUfoeE8AtvrXFu5pTV8T (19 x)

[BBE] [b.i] [google] 1DaZbGFmUskfBmAV3XHhcAxkpjs32UGBfh (19 x)

[BBE] [b.i] [google] 133a1seCmdyKBc5GjmjWdyyCr4A3Lth6Zj (19 x)

[BBE] [b.i] [google] 1JHztH2WGJxBGb6Xzv7Vmq9iPkgt942nJy (18 x)

[BBE] [b.i] [google] 19Bd7ci22v9bG4iWYvgpeSTxKeXBtXWjj4 (18 x)

[BBE] [b.i] [google] 16UBzqXVnXEQGA6Za4t4mTavRzazkCGeWi (18 x)

[BBE] [b.i] [google] 1ANqD4w4rHEWyf93sRQyc259QSVriab8d1 (17 x)

[BBE] [b.i] [google] 16uBqiGur9nohgMPyS6QzPA7EzF5gstA8q (17 x)

[BBE] [b.i] [google] 16rrFWnx81UkhqFktcyniVEZEHL6k51iub (17 x)

[BBE] [b.i] [google] 12DK76obundhnnbGKcaKEn3BcMNNH5SVU4 (16 x)

[BBE] [b.i] [google] 1PPddaBVYHLUNBbU8vhhqKr5nUvBspL7v1 (15 x)

[BBE] [b.i] [google] 1LgvQSLsyQUgDkpu9nM66qinuysSTg5iSQ (15 x)

[BBE] [b.i] [google] 1KJHFTRuQncgaNoEyXjGUi19QaKMB5VfN2 (15 x)

[BBE] [b.i] [google] 1FWq39AU9cx2kbqHgNhiWC6T863NgUGp2e (15 x)

[BBE] [b.i] [google] 1RNSdQGbrLP51wcrc84mne8zYC5GkwJ1C (14 x)

[BBE] [b.i] [google] 1NKd66PKvRGWqH2TQjcEiAzHfdKfhumqnJ (14 x)

[BBE] [b.i] [google] 1Kt9FAg8HAXrs8VWafsPjhL9dvq9NMDck4 (14 x)

[BBE] [b.i] [google] 1K7xZrzS41f9RNgRNnjttCKPNCAJk9BU5s (14 x)

[BBE] [b.i] [google] 1BuMcah7BVLGdDKRH63TyVabscKeULiEpu (14 x)

[BBE] [b.i] [google] 17uY6a7zUidQrJVvpnFchD1MX1untuAufd (14 x)

[BBE] [b.i] [google] 15iGs1jiTaW5oRVPJ9Jdt4exjVvWTKB9Dr (14 x)

[BBE] [b.i] [google] 1Lpp4qpinaxY9oznMskLAEGtBtdhPaS1eg (13 x)

[BBE] [b.i] [google] 1Hm55fL8wdwGqcZX9aZFe9ysM3gSAkE11x (13 x)

[BBE] [b.i] [google] 1EfZoGfbREGun4d5US7ARyyjZZPL11Egg8 (13 x)

[BBE] [b.i] [google] 1CxKmPeX2SuxXYosrvZr2jBvakjmxq1UJc (13 x)

[BBE] [b.i] [google] 1AshPGUbzMxbiGin3SvnfYk4CAnyQHzpHP (13 x)

[BBE] [b.i] [google] 1PowAnGLQLvNNnJ9Tuk7FNqYQpQUZqa6f3 (12 x)

[BBE] [b.i] [google] 1MZMEshX3Sp5AjGHR7dGp3nk8qkUfMgHQJ (12 x)

[BBE] [b.i] [google] 1MNH6WrJgSMxZwsMDhG92uxV6w7uawRVHQ (12 x)

[BBE] [b.i] [google] 1ManuSfoTfDVLrGkohsLbcShBD9Ahf8rPa (12 x)

[BBE] [b.i] [google] 1M2B4zktTxXZ1pqi4JkGkuRyLpMAEcXH37 (12 x)

[BBE] [b.i] [google] 1GzrQDm1tRx2P8DFe1f9pMUDiPfZyXvMmi (12 x)

[BBE] [b.i] [google] 1GAd65EGU2AKknrbmmkdgwL3FgVgwr7za9 (12 x)

[BBE] [b.i] [google] 1EfANwXf8oPHhy7Euc8DVzPKpXaZN7xfL1 (12 x)

[BBE] [b.i] [google] 16mKG9PNDFxRqWJXNi5tMBqVqzpdcqMk5 (12 x)

[BBE] [b.i] [google] 13NXx75d3YyiU83vb5P6kPaVpGKCdRAkur (12 x)

[BBE] [b.i] [google] 1Q7ZzqVtQKQ8vUvHfoNBRCoKeQD3df96a6 (11 x)

[BBE] [b.i] [google] 1LUDcDX8ixUVHEiZkw9rjk5JxdLisqqgku (11 x)

[BBE] [b.i] [google] 1KCcg3XCnZovNJzBnptjWvjwqz71dHYV1L (11 x)

[BBE] [b.i] [google] 1GWLpgvvgFWz2LN4VfidwEjpueM5mojjG6 (11 x)

[BBE] [b.i] [google] 1EPHjWZbZRUCBgzvkYGiWpLWNpK2ce31Vi (11 x)

[BBE] [b.i] [google] 1ChWbjxDi8NuGA9Pb9HLoy3hN38zJj1MvX (11 x)

[BBE] [b.i] [google] 1Bn1BaLibWMndHNZLxph77cz8uj9UvxGP6 (11 x)

[BBE] [b.i] [google] 1AQb7RsfMsXpdErHUKvuFEDFiDS43pNzPA (11 x)

[BBE] [b.i] [google] 17Ux4V8RVedGEDWCA5ZuUWX1CNqHphBiJj (11 x)

[BBE] [b.i] [google] 16u8NazpHqTF3WQXSeKry1jKDptxL8GvAo (11 x)

[BBE] [b.i] [google] 1PNX8xkC1BjtYXZudqYQSpWegtdT4Ks5Q3 (10 x)

[BBE] [b.i] [google] 1Pb6y7z25p81tzhaKbvqSykijB9y6yBEWq (10 x)

[BBE] [b.i] [google] 1P9xNaECSD8oR7mn18tB4DiSQ3Zf52vuVx (10 x)

[BBE] [b.i] [google] 1KMECq7FKVVHaMcmBWQFjkQBuUPE7RCTNp (10 x)

[BBE] [b.i] [google] 1JYZXAksakJuqoPgaF2REcVFUYLBLzTQrB (10 x)

[BBE] [b.i] [google] 1JChXiLbRtiFUsDsiw5Lbr1Qev4849wPiJ (10 x)

[BBE] [b.i] [google] 1J13NBTKiV8xrAo2dwaD4LhWs3zPobhh5S (10 x)

[BBE] [b.i] [google] 1GCTtQcHnS7BC93eNu3JaFhDgXvt3gfKXb (10 x)

[BBE] [b.i] [google] 1DFUPy1ggSMXmLuobyCiAAkes4QbD5LtJK (10 x)

[BBE] [b.i] [google] 1CXgSECGyHVwcwgcVoxti8nBHzBUphfQLc (10 x)

[BBE] [b.i] [google] 18eDmL4ov4YfZ6F2Wb5VFPyremFP8KuJYE (10 x)

[BBE] [b.i] [google] 1332BaqrqaMvjZGFNGVCviNbesMNxaYvDk (10 x)

[BBE] [b.i] [google] 1Q2mdgsgcRovAjsBFg8AHXypWzdjnKX2nf (9 x)

[BBE] [b.i] [google] 1LF9D48Sk48KNb9e5i4ZreftmHfCLY5NUS (9 x)

[BBE] [b.i] [google] 1L3Xq4A2v4Kg2QLAKzva3gKJYshHjKiqUS (9 x)

[BBE] [b.i] [google] 1KB16Cbs4VzDqawBcvLueXSim2tyFJp5dB (9 x)

[BBE] [b.i] [google] 1G6uaqz7aa3s969VRgevN8woeXEvepnDDi (9 x)

[BBE] [b.i] [google] 1Eqrpv6R5GFc92zoDDoMcRRSzqdGLPBc8H (9 x)

[BBE] [b.i] [google] 1D5imyAhoGzhzuhFauMp2aFRFQgZ5SmQV8 (9 x)

[BBE] [b.i] [google] 1BWhjzqob34B2gV3D8tgP6yV44oSsmXx17 (9 x)

[BBE] [b.i] [google] 1Bjaewgk3bXujiJUqLcrkk7aKSS1f9kUV3 (9 x)

[BBE] [b.i] [google] 18TG9ubxK3MU6DrCFgKiv3XTAE6SH3aDXA (9 x)

[BBE] [b.i] [google] 18qmrut47YftRkFDin2ZwctpDBjUaNiYtd (9 x)

[BBE] [b.i] [google] 17KBKMyTBkh9Qeza2AftMFRQss5a7J16Mj (9 x)

[BBE] [b.i] [google] 15kv5pJSiQUiPAa9L5Uxsc9ErMPJ8sRSau (9 x)

[BBE] [b.i] [google] 13CsjoQAACEwYwp5yGcsrbMmfbbYdwUXDb (9 x)

[BBE] [b.i] [google] 1PYHMBrQHLAtEPnDsT5Y1yvPA1wkpDqMZe (8 x)

[BBE] [b.i] [google] 1PEUFG7RFK3EJuDxSP2XMCv4n4f1AnWPLb (8 x)

[BBE] [b.i] [google] 1NzzG4TUHA3VgKXCy1i2ffVoCZBGUQHV4G (8 x)

[BBE] [b.i] [google] 1NFkjUVenDU4U1TVr5jm7YxwZ5ocjeizmU (8 x)

[BBE] [b.i] [google] 1n3PbYoZ7SKC4aLiRPKzjEYaNWCn4SHTP (8 x)

[BBE] [b.i] [google] 1LRsMQVVJmwgYYqtM7hL8uQqjepz27yFrj (8 x)

[BBE] [b.i] [google] 1L3ayzv8P4dRZLQ3vLcCVW3GEJauM5vKo8 (8 x)

[BBE] [b.i] [google] 1Kx4JK93A74rr3QuE3Yt3z9wruKKeUrJFw (8 x)

[BBE] [b.i] [google] 1KmNyVqQdimRR7eoRT6DRfCkiM4UW6tPJA (8 x)

[BBE] [b.i] [google] 1HaBCqaEQNcPcySFf4MkCTuc9Gh2ptHJ6F (8 x)

[BBE] [b.i] [google] 1DVGSxiMHNZsQDKQA5yAPHCPBtxaAtKG6E (8 x)

[BBE] [b.i] [google] 1Di97qTpRbnYrNonRnA82oaWdSdMTJW8JF (8 x)

[BBE] [b.i] [google] 1DEsxZ9fWCVAjkZgn4EoBc2YytSieMppCH (8 x)

[BBE] [b.i] [google] 1C41uDfQsBnt6FXeXo6tkVes3Cu7LFpcKC (8 x)

[BBE] [b.i] [google] 1B7FTiH3tzNgKqpnHNyrvmP53Zjvv3dszD (8 x)

[BBE] [b.i] [google] 19sgHtnHsT7ho67SKqLvgY9xm3BZEoahzR (8 x)

[BBE] [b.i] [google] 12a3Re3LN9JY1sSrhiGSQq5i2jNJtx4t8n (8 x)

[BBE] [b.i] [google] 1Q5RfT8a5YHnqaZPqA7K2x1J1mvbfJKwFs (7 x)

[BBE] [b.i] [google] 1NWDJpjqj6KEgKWZVGAwdFj4bCSihc1RjL (7 x)

[BBE] [b.i] [google] 1MPHRJvv6jhjp32GLo7jUW32qK7Wy7Fe29 (7 x)

[BBE] [b.i] [google] 1MMc227TR2ropsB7CaHaYGqPZNNdfs1yH (7 x)

[BBE] [b.i] [google] 1MaysWLxwd96onmLwsb1jYyKQY4oYjaTZU (7 x)