chain: prefer to keep more than less

lib/bcoin/chain.js

@@ -220,17 +220,20 @@ Chain.prototype.getLast = function getLast() {
 };
 
 Chain.prototype.toJSON = function toJSON() {
+  var r = this.index.hashes.length % 50;
+  var keep = 1000 + r;
+
   // Keep only last 1000 consequent blocks, use every 50th for older
   var last = {
-    hashes: this.index.hashes.slice(-1000),
-    ts: this.index.ts.slice(-1000)
+    hashes: this.index.hashes.slice(-keep),
+    ts: this.index.ts.slice(-keep)
   };
 
   var first = {
     hashes: this.index.hashes.slice(0, this.index.initialSize - 1000),
     ts: this.index.ts.slice(0, this.index.initialSize - 1000)
   };
-  var len = (this.index.hashes.length - 1000) - this.index.hashes.length % 50;
+  var len = this.index.hashes.length - keep;
   for (var i = this.index.initialSize - 1000; i < len; i += 50) {
     first.hashes.push(this.index.hashes[i]);
     first.ts.push(this.index.ts[i]);

lib/bcoin/protocol/preload.js

@@ -5971,25 +5971,7 @@ module.exports = {
     "194e2e10a12cbe3fd762dc5ebcfa13beb31b4830a54e63930000000000000000",
     "658787eaba3809974ac4ae7eb39f7f289dd6be08555cc01e0000000000000000",
     "c9016739af151d881107cbc9bcf0252bc5983ca64f1c7d040000000000000000",
-    "6e50abfa3b42e894c93aefcb829efa22426c912ff618a2600000000000000000",
-    "043df4a533614646fba3e63bb6908fc4433941f92a4e8f0f0000000000000000",
-    "74888bd1d292f14d50c13dcccdfca192b449413a9ee2fb460000000000000000",
-    "cacda54ea62dea0f14660db29d56aa66c3bcb1af1d47307f0000000000000000",
-    "eb9befe4620ccc184d3b18dbf8e8c8bc427e0f4d4555316a0000000000000000",
-    "660cae068d61fed30c66ddde785be6c016d5486e19abf3360000000000000000",
-    "f2f9356f76cb6543298d9f56bbf777b2d29076d412e488250000000000000000",
-    "ed2c95ab74b5261f8102de7f08920278c4a21cf32f265c680000000000000000",
-    "64db739288d302513d217df546e7db00f7cd415fb2b4f66e0000000000000000",
-    "c8cd5ba3767a889d0765d37928c3e9d582794738610287340000000000000000",
-    "1cb0541d1f960062497830f1cf14f4bc6cd4b30ce5ddff650000000000000000",
-    "c57db4b9547799e1ae5192085032822d5699fea07707c9240000000000000000",
-    "fce89e7bd016cc455c9c368a3d2f1884689c24e61303fb700000000000000000",
-    "ad53c19a51cea28bbe42676209807b9c4e49b9e0539e99120000000000000000",
-    "f7fceda8d4e9c9edd66c2429da99722ce7289ccbe6ccb6360000000000000000",
-    "85459cd22019cdfbf0a58d7fcd863d98de275deb129075600000000000000000",
-    "3c1eaa9235927023ef98da64af5f649edbd240b569c8fb730000000000000000",
-    "500cb64081287553fe3f578a154db7e0ad4836ea2584eb780000000000000000",
-    "3ac6bb16bc39a6c8c89b2a9facde9dc1f23a2488f00be63f0000000000000000",
+    "65dcfa4fbb1b9bece06e8cba3b6414c7596ace980e63ea3a0000000000000000",
     "ab8aba2b070327ce682dc4711a028d3e66ddff0fcc8dda730000000000000000",
     "8b8e374399b7a4dd71f61201492cad4b4a16578fdd43602b0000000000000000",
     "e54bd23130fde04921e73d5334ef85e7e4528770904d73880000000000000000",
@@ -6970,7 +6952,28 @@ module.exports = {
     "b3b7d1740c3d8f45846c0e0c8c32f6eb42523201ba861c7e0000000000000000",
     "8a4736663770bb0615f9e7319be4ce797928e8a26ed0422c0000000000000000",
     "7bf2b32e35ef003b2c2d3bc0669c47db70acafa5f7203e240000000000000000",
-    "b933fbe14a2a5f55971f0e58fd36de9fe953e2e04b123b630000000000000000"
+    "b933fbe14a2a5f55971f0e58fd36de9fe953e2e04b123b630000000000000000",
+    "2ca2b48da3b01b84569087f9c21bc61fa34d9b4dee4aa94c0000000000000000",
+    "dddae5576b34487fdb82464ba4abb3a7d124eaed5b888d270000000000000000",
+    "f503baef30d79d8604e0e0a3743339322f16ecb99dc090710000000000000000",
+    "de2ac1570cdbf2fb221dff135a68d363770b8ab764f79f260000000000000000",
+    "d3bb15254b9e1d42959d471c588cfe6567446d6c893c2b660000000000000000",
+    "362c353220abd658717ab4b163d511af12ba3f13052c2e440000000000000000",
+    "11c280e4c88987beae81705738ac96f8a2bbcd6f51ea43370000000000000000",
+    "2b447ae4208cc9f1789ad89e9d5a340b8e0b4aa504c6a4070000000000000000",
+    "34b7b1586fcd537504d03c343dbe10284420bdf76e90861d0000000000000000",
+    "4b1e3960cd53eccc7d338687d60b5efcf6df75f8f0574e420000000000000000",
+    "828c76ddbbf9f2b0ca0750fd877d0f5334b1dee9e62412180000000000000000",
+    "7f1aa9765675eb56774e03b8a1244a8f4b63744477dcb4580000000000000000",
+    "e940f20843d10cf543386653e7ee73cf2002a545de0dde4f0000000000000000",
+    "951982a83bc37f26c6cb583ba769ec9775920928585f5e850000000000000000",
+    "6217f12f6cd2084d192005eb534d860a112c0c4b381b64860000000000000000",
+    "818c257fb2a4c7f0477d6817b7d8cc47c253d7bb22118f260000000000000000",
+    "13ccc453774cdbcec9b0fe55ced20dc1d237581ff7679f6b0000000000000000",
+    "ddf38509534c9395da13556ce64582a9250e784a8149a3380000000000000000",
+    "8cbbacbb9144b3dffaac301c069cef6e17283c6aceadac180000000000000000",
+    "89e6327c8ec6cfc63b5b31d49dc0700e7f043127c135c8320000000000000000",
+    "055736ccb314f860820e7fe8e9d01509b8bb0f3808c11b540000000000000000"
   ],
   "ts": [
     1231006505,
@@ -12941,25 +12944,7 @@ module.exports = {
     1398750211,
     1398778093,
     1398802330,
-    1398838691,
-    1398839785,
-    1398839786,
-    1398841163,
-    1398842685,
-    1398843125,
-    1398843173,
-    1398843575,
-    1398844646,
-    1398846053,
-    1398846528,
-    1398846772,
-    1398848156,
-    1398848800,
-    1398848829,
-    1398849091,
-    1398849291,
-    1398850435,
-    1398851974,
+    1398827521,
     1398852169,
     1398852363,
     1398853035,
@@ -13940,6 +13925,27 @@ module.exports = {
     1399397552,
     1399399037,
     1399399358,
-    1399399595
+    1399399595,
+    1399400179,
+    1399400914,
+    1399401098,
+    1399401234,
+    1399402500,
+    1399402889,
+    1399403068,
+    1399403389,
+    1399404079,
+    1399404225,
+    1399404914,
+    1399404928,
+    1399405313,
+    1399405628,
+    1399405762,
+    1399406047,
+    1399406192,
+    1399406418,
+    1399406964,
+    1399407628,
+    1399407752
   ]
 }