ChangeLog¶

Note

you must add the following line to your bitcoin.conf file:

rest=1

I strongly recommend also adding:

rpcservertimeout=120

If you see messages in your logs about truncated messages whilst syncing, you may need to increase the timeout (in seconds) further.

Version 1.20.0 (21 Oct 2021)¶

get blocks via the REST API from bitcoind, and process them incrementally and in a separate thread
support for TSC merkle proofs (AustEcon)
sockets tweak (rt1212121)

disconnect excessive resource usage sessions faster (SomberNight)
better handling of task groups to reduce memory usage and report errors properly
add MAX_RECV environment variable defaulting to 5 million bytes

switch to 5-byte txnums to handle larger blockchains. Upgrade DBs during restart.
accurate clearing of stale caches
coin additions / updates: NavCoin + Hush + VersusCoin + Zero (cipig), DashRegtest (colmenero), Quebecoin (morinpa), Primecoin (Sunny King), multiple (Panagiotis David), RVN (standard-error), Sumcoin
other: Jeremy Rand, Jin Eguchi, ddude, Jonathan Cross, Carsen Klock, cipig

require Python 3.7
support for Bitcoin SV Genesis activation
DB upgrade to allow for larger transactions. Your DB will automatically upgrade when starting, the upgrade should take approximately 15 mintues.
fix server shutdown process
fix cache race condition (issue #909)
faster initial sync
coin additions / updates: Emercoin (yakimka), Feathercoin (wellenreiter01), Peercoin (peerchemist), Namecoin (JeremyRand), Zcoin (a-bezrukov), Simplicity, Mice (ComputerCraftr), Sibcoin testnet (TriKriSta), Odin (Manbearpixel),
other: h2o10, osagga, Sombernight, breign, pedr0-fr, wingsuit

daemon: use a single connection for all requests rather than a connection per request. Distinguish handling of JSON and HTTP errors
recognise OP_FALSE OP_RETURN scripts as unspendable
peers - attempt to bind to correct local IP address
improve name support (domob1812)
coin additions / updates: BitZeny (y-chan), ZCoin (a-bezrukov), Emercoin (yakimka), BSV (Roger Taylor), Bellcoin (streetcrypto7), Ritocoin (traysi), BTC (Sombernight), PIVX (mrcarlanthony), Monacoin (wakiyamap)), NamecoinRegtest (JeremyRand), Axe (ddude1), Xaya (domob1812), GZRO (MrNaif2018), Ravencoin (standard-error)
other: gits7r

require aiorpcX 0.18.1. This introduces websocket support. The environment variables changed accordingly; see SERVICES and REPORT_SERVICES.
work around bug in recent versions of uvloop
aiorpcX upgrade fixes from Shane M
coin additions / updates: BitcoinSV, Bolivarcoin (Jose Luis Estevez), BTC Testnet (ghost43), Odin (Pixxl)

require aiorpcX 0.15.x
require aiohttp 3.3 or higher; earlier versions had a problematic bug
add REQUEST_TIMEOUT and LOG_LEVEL environment variables
mark 4 old environment variables obsolete. ElectrumX won’t start until they are removed
getinfo local RPC cleaned up and shows more stats
miscellaneous fixes and improvements
more efficient handling of some RPC methods, particularly blockchain.transaction.get_merkle()
coin additions / updates: BitcoinSV scaling testnet (Roger Taylor), Dash (zebra lucky),
issues resolved: #566, #731, #795

introduce per-request costing. See environment variables documentation for new variables COST_SOFT_LIMIT, COST_HARD_LIMIT, REQUEST_SLEEP, INITIAL_CONCURRENT, BANDWIDTH_UNIT_COST. Sessions are placed in groups with which they share some of their costs. Prior cost is remembered across reconnects.
require aiorpcX 0.13.5 for better concurrency handling
require clients use protocol 1.4 or higher
handle transaction.get_merkle requests more efficiently (ghost43)
Windows support (sancoder)
peers improvements (ghost43)
report mempool and block sizes in logs
electrumx_rpc: timeout raised to 30s, fix session request counts
other tweaks and improvements by Bjorge Dijkstra, ghost43, peleion,
coin additions / updates: ECA (Jenova7), ECCoin (smogm), GXX (DEVCØN), BZX (2INFINITY), DeepOnion (Liam Alford), CivX / EXOS (turcol)

extra countermeasures to limit BTC phishing effectiveness (ghost43)
peers: mark blacklisted peers bad; force retry blacklisted peers (ghost43)
coin additions / updates: Monacoin (wakiyamap), Sparks (Mircea Rila), ColossusXT, Polis, MNPCoin, Zcoin, GINCoin (cronos), Grosetlcoin (gruve-p), Dash (konez2k), Bitsend (David), Ravencoin (standard-error), Onixcoin (Jose Estevez), SnowGem
coin removals: Gobyte, Moneci (cronos)
minor tweaks by d42
issues fixed #660 - unclean shutdowns during initial sync

restore protocol version 1.2 and send a warning for old BTC Electrum clients that they need to upgrade. This is an attempt to protect users of old versions of Electrum from the ongoing phishing attacks
increase default MAX_SEND for AuxPow Chains. Truncate AuxPow for block heights covered by a checkpoint. (jeremyrand)
coin additions / updates: NMC (jeremyrand), Dash (zebra-lucky), PeerCoin (peerchemist), BCH testnet (Mark Lundeberg), Unitus (ChekaZ)
tighter RPC param checking (ghost43)

minimum protocol version is now 1.4
coin additions / updates: BitcoinSV, SmartCash (rc125), NIX (phamels), Minexcoin (joesixpack), BitcoinABC (mblunderburg), Dash (zebra-lucky), BitcoinABCRegtest (ezegom), AXE (slowdive), NOR (flo071), BitcoinPlus (bushsolo), Myriadcoin (cryptapus), Trezarcoin (ChekaZ), Bitcoin Diamond (John Shine),
close #554, #653, #655
other minor tweaks (Michael Schmoock, Michael Taborsky)

Neil Booth kyuupichan@gmail.com https://github.com/kyuupichan