include "first seen" on address pages

routes/baseActionsRouter.js

@@ -610,8 +610,16 @@ router.get("/address/:address", function(req, res) {
 							pagedTxids.push(txids[i]);
 						}
 					}
+
+					// always request the first txid; we'll use it to show "first seen" info for the address
+					pagedTxids.unshift(txidResult.result[0].tx_hash);
 					
 					coreApi.getRawTransactionsWithInputs(pagedTxids).then(function(rawTxResult) {
+						// first result is always the earliest tx, but doesn't fit into the current paging;
+						// store it as firstSeenTransaction then remove from list
+						res.locals.firstSeenTransaction = rawTxResult.transactions[0];
+						rawTxResult.transactions.shift();
+
 						res.locals.transactions = rawTxResult.transactions;
 						res.locals.txInputsByTransaction = rawTxResult.txInputsByTransaction;
 						res.locals.blockHeightsByTxid = blockHeightsByTxid;
@@ -666,6 +674,17 @@ router.get("/address/:address", function(req, res) {
 					reject(err);
 				});
 			}));
+
+			promises.push(new Promise(function(resolve, reject) {
+				coreApi.getBlockchainInfo().then(function(getblockchaininfo) {
+					res.locals.getblockchaininfo = getblockchaininfo;
+
+					resolve();
+
+				}).catch(function(err) {
+					reject(err);
+				});
+			}));
 		}
 
 		Promise.all(promises).catch(function(err) {

views/address.pug

@@ -100,6 +100,25 @@ block content
 											div(class="summary-split-table-label") Witness Program
 											div(class="summary-split-table-content monospace") #{result.validateaddress.witness_program}
 
+									if (firstSeenTransaction)
+										div(class="row")
+											div(class="summary-split-table-label") First Seen
+											div(class="summary-split-table-content monospace")
+												if (getblockchaininfo)
+													span Block ##{(getblockchaininfo.blocks - firstSeenTransaction.confirmations).toLocaleString()}
+												else
+													a(href=("/block/" + firstSeenTransaction.blockhash)) #{firstSeenTransaction.blockhash}
+
+												br
+
+												span #{moment.utc(new Date(firstSeenTransaction.time * 1000)).format("Y-MM-DD HH:mm:ss")} utc
+												- var timeAgoTime = firstSeenTransaction.time;
+												include includes/time-ago.pug
+												
+												if (false)
+													pre
+														code #{JSON.stringify(firstSeenTransaction)}
+
 									if (balance)
 										if (balance.conflictedResults)
 											div(class="row")