An external bitcoind index management service.
By default, this module maintains script, spents, transaction block, txout and block indexes.
The module uses getblockheader, getblock and getbestblockhash RPC methods, solely.
-txindex is not required for this module; but is still useful for individual transaction lookup (aka txHex).
See bitcoinjs#6 if you think an independent transaction index should be added.
Uses yajrpc for the bitcoind RPC;
leveldown for the database;
and zmq for bitcoind notifications.
See example/ for a functioning express HTTP API example.