Orphan Block - Bitcoin Wiki

"Businesses and individuals should ensure that their software is #BCH compatible by running @Bitcoin_ABC . Alternate nodes are incompatible and risk chain wipeout or orphaned blocks."

submitted by xd1gital to btc [link] [comments]

Is it true that we haven't seen orphaned blocks in years? If they exist, how to check/monitor this? (x-post from /r/Bitcoin)

submitted by ASICmachine to CryptoCurrencyClassic [link] [comments]

BITCOIN BLOCK COLLISION! Orphan Blocks and Reversed Transactions Explained By Programmer

BITCOIN BLOCK COLLISION! Orphan Blocks and Reversed Transactions Explained By Programmer submitted by LightningPlus to Bitcoin [link] [comments]

Ivan on Tech - BITCOIN BLOCK COLLISION! Orphan Blocks and Reversed Transactions Explained By Programmer

Ivan on Tech - BITCOIN BLOCK COLLISION! Orphan Blocks and Reversed Transactions Explained By Programmer submitted by Yanlii to cryptovideos [link] [comments]

SV will not succeed in attacking BCH. The defense is simple, honest miners should orphan malicious blocks that contain attacks. Reorgs and emptyblocks are defined as attacks by the Bitcoin whitepaper. Anyone carrying out such an attack is a dishonest miner and should be orphaned.

SV will not succeed in attacking BCH. The defense is simple, honest miners should orphan malicious blocks that contain attacks. Reorgs and emptyblocks are defined as attacks by the Bitcoin whitepaper. Anyone carrying out such an attack is a dishonest miner and should be orphaned. submitted by VeritasSapere to btc [link] [comments]

BitMEX Research:" Our Bitcoin SV node experienced a 2 block chain re-organisation today, at around 4am UTC One of the orphaned blocks was around 62.6MB in size, which may have caused the issue"

BitMEX Research: submitted by money78 to bsv [link] [comments]

ProHashing stops mining ABC: "According to @el33th4xor, the two orphaned blocks related to yesterday's Bitcoin Cash fork are a "temporary hiccup." When you are dealing with so much money, mistakes cost jobs and change lives. We decided to stop mining with @Bitcoin_ABC as a result."

ProHashing stops mining ABC: submitted by cryptorebel to bitcoincashSV [link] [comments]

Help needed diagnosing another Bitcoin Unlimited Cash orphaned block

We had yet another bitcoin cash orphan this morning, at 7:11:23am EST. I attached the log and the getinfo() results below. I remember that jtoomim has said he was willing to look at logs, so perhaps he or someone else can figure this one out.
In this case, it does not appear as if bandwidth restrictions had any impact. The daemon never hit the bandwidth cap at any time, before or after the block was found by Bitcoin Unlimited Cash. The block was accepted by the daemon as valid, and then our checker later determined that it wasn't present on the main chain.
Does this log contain any information that could assist in determining why the orphan rate is around 5%? I thought that it should be lower than that.
{ "version": 1050100, "protocolversion": 80003, "walletversion": 130000, "balance": 11.99153576, "blocks": 561230, "timeoffset": 0, "connections": 16, "proxy": "", "difficulty": 137513968721.5887, "testnet": false, "keypoololdest": 1542387258, "keypoolsize": 100, "unlocked_until": 0, "paytxfee": 0.00000000, "relayfee": 0.00000000, "status": "ready", "errors": "", "fork": "Bitcoin Cash" } 

2018-12-17 12:02:38 Acceptable block: ver:20c00000 time:1545048143 size: 42558 Tx:106 Sig:179 2018-12-17 12:02:38 UpdateTip: new best=000000000000000003648d35c1bee30a62c93b004d8e5b05df1d0098a8d46aff height=561204 bits=403185772 log2_work=87.75729 tx=268355142 date=2018-12-17 12:02:23 progress=0.999999 cache=0.1MiB(351txo) 2018-12-17 12:02:38 CheckAndAlertUnknownVersionbits: 36 of last 100 blocks have unexpected version. One example: 0x20400000 2018-12-17 12:02:39 CreateNewBlock(): total size 1085 txs: 0 fees: 0 sigops 100 2018-12-17 12:02:39 Acceptable block: ver:20000000 time:1545048159 size: 193 Tx:1 Sig:1 2018-12-17 12:02:39 CreateNewBlock(): total size 1085 txs: 0 fees: 0 sigops 100 2018-12-17 12:02:39 Acceptable block: ver:20000000 time:1545048159 size: 193 Tx:1 Sig:1 2018-12-17 12:05:11 Acceptable block: ver:20000000 time:1545048307 size: 1584 Tx:6 Sig:13 2018-12-17 12:05:11 UpdateTip: new best=000000000000000005ded68295e2f941b4875ba4699e8d6ff5e925bfa7b8573a height=561205 bits=403190346 log2_work=87.757293 tx=268355148 date=2018-12-17 12:05:07 progress=1.000000 cache=0.1MiB(19txo) 2018-12-17 12:05:11 CheckAndAlertUnknownVersionbits: 36 of last 100 blocks have unexpected version. One example: 0x20400000 2018-12-17 12:05:11 CreateNewBlock(): total size 1085 txs: 0 fees: 0 sigops 100 2018-12-17 12:05:11 Acceptable block: ver:20000000 time:1545048311 size: 193 Tx:1 Sig:1 2018-12-17 12:05:11 CreateNewBlock(): total size 1085 txs: 0 fees: 0 sigops 100 2018-12-17 12:05:11 Acceptable block: ver:20000000 time:1545048311 size: 193 Tx:1 Sig:1 2018-12-17 12:11:23 Acceptable block: ver:20c00000 time:1545048311 size: 261 Tx:1 Sig:1 2018-12-17 12:11:23 UpdateTip: new best=000000000000000001d2d4401618fd1c598ab126f407a30df326ccfbf99d2823 height=561206 bits=403197915 log2_work=87.757296 tx=268355149 date=2018-12-17 12:05:11 progress=0.999978 cache=0.1MiB(48txo) 2018-12-17 12:11:23 CheckAndAlertUnknownVersionbits: 36 of last 100 blocks have unexpected version. One example: 0x20800000 2018-12-17 12:11:23 CreateNewBlock(): total size 10511 txs: 24 fees: 33055 sigops 144 2018-12-17 12:11:23 Acceptable block: ver:20000000 time:1545048683 size: 9619 Tx:25 Sig:42 2018-12-17 12:11:23 CreateNewBlock(): total size 10511 txs: 24 fees: 33055 sigops 144 2018-12-17 12:11:23 Acceptable block: ver:20000000 time:1545048683 size: 9619 Tx:25 Sig:42 2018-12-17 12:11:25 Acceptable block: ver:20000000 time:1545048655 size: 2987 Tx:8 Sig:14 2018-12-17 12:14:20 Acceptable block: ver:20000000 time:1545048836 size: 14401 Tx:37 Sig:62 2018-12-17 12:14:20 UpdateTip: new best=000000000000000005ded68295e2f941b4875ba4699e8d6ff5e925bfa7b8573a height=561205 bits=403190346 log2_work=87.757293 tx=268355148 date=2018-12-17 12:05:07 progress=0.999968 cache=0.1MiB(85txo) 2018-12-17 12:14:20 CheckAndAlertUnknownVersionbits: 36 of last 100 blocks have unexpected version. One example: 0x20400000 2018-12-17 12:14:20 UpdateTip: new best=000000000000000002b6dbc218db453dcf75ddce6e8fce27924769429f647c47 height=561206 bits=403197915 log2_work=87.757296 tx=268355156 date=2018-12-17 12:10:55 progress=0.999988 cache=0.1MiB(100txo) 2018-12-17 12:14:20 CheckAndAlertUnknownVersionbits: 35 of last 100 blocks have unexpected version. One example: 0x20800000 2018-12-17 12:14:20 UpdateTip: new best=0000000000000000051ed80cfac2bfcb6736608d13dd4c122365ef5095606dee height=561207 bits=403196363 log2_work=87.7573 tx=268355193 date=2018-12-17 12:13:56 progress=0.999999 cache=0.1MiB(167txo) 2018-12-17 12:14:20 CheckAndAlertUnknownVersionbits: 35 of last 100 blocks have unexpected version. One example: 0x20800000 2018-12-17 12:14:20 CreateNewBlock(): total size 2297 txs: 3 fees: 1223 sigops 114 2018-12-17 12:14:20 Acceptable block: ver:20000000 time:1545048860 size: 1405 Tx:4 Sig:9 2018-12-17 12:14:20 CreateNewBlock(): total size 2297 txs: 3 fees: 1223 sigops 114 2018-12-17 12:14:20 Acceptable block: ver:20000000 time:1545048860 size: 1405 Tx:4 Sig:9 2018-12-17 12:18:18 Acceptable block: ver:20000000 time:1545049076 size: 8023 Tx:21 Sig:41 2018-12-17 12:18:18 UpdateTip: new best=000000000000000003c4d52a41d6c702be827a7048816fdf74e8a3272cdd12eb height=561208 bits=403198104 log2_work=87.757303 tx=268355214 date=2018-12-17 12:17:56 progress=0.999999 cache=0.1MiB(101txo) 2018-12-17 12:18:18 CheckAndAlertUnknownVersionbits: 35 of last 100 blocks have unexpected version. One example: 0x20800000 2018-12-17 12:18:18 CreateNewBlock(): total size 3755 txs: 4 fees: 104676 sigops 108 2018-12-17 12:18:18 Acceptable block: ver:20000000 time:1545049098 size: 2863 Tx:5 Sig:9 2018-12-17 12:18:18 CreateNewBlock(): total size 3755 txs: 4 fees: 104676 sigops 108 2018-12-17 12:18:18 Acceptable block: ver:20000000 time:1545049098 size: 2863 Tx:5 Sig:9 2018-12-17 12:21:50 Acceptable block: ver:20800000 time:1545049250 size: 11480 Tx:26 Sig:41 2018-12-17 12:21:50 UpdateTip: new best=0000000000000000039d58dcb3bcd2e5a8a79b5b47227a97e21d22a1028e3dd4 height=561209 bits=403193955 log2_work=87.757306 tx=268355240 date=2018-12-17 12:20:50 progress=0.999997 cache=0.1MiB(115txo) 2018-12-17 12:21:50 CheckAndAlertUnknownVersionbits: 35 of last 100 blocks have unexpected version. One example: 0x20c00000 2018-12-17 12:21:50 CreateNewBlock(): total size 2463 txs: 4 fees: 2387 sigops 109 2018-12-17 12:21:50 Acceptable block: ver:20000000 time:1545049310 size: 1571 Tx:5 Sig:10 2018-12-17 12:21:50 CreateNewBlock(): total size 2463 txs: 4 fees: 2387 sigops 109 2018-12-17 12:21:50 Acceptable block: ver:20000000 time:1545049310 size: 1571 Tx:5 Sig:10 2018-12-17 12:30:52 connect() to [2607:f2c0:ecae:3d:1262:ebff:fe48:85f3]:8333 failed: Network is unreachable (101) 2018-12-17 12:37:40 Acceptable block: ver:20000000 time:1545050227 size: 69173 Tx:76 Sig:146 2018-12-17 12:37:40 UpdateTip: new best=000000000000000002b2982882663cf01b1db0bcc2876fa55c2a41d3ef354d7b height=561210 bits=403192877 log2_work=87.757309 tx=268355316 date=2018-12-17 12:37:07 progress=0.999998 cache=0.1MiB(548txo) 2018-12-17 12:37:40 CheckAndAlertUnknownVersionbits: 34 of last 100 blocks have unexpected version. One example: 0x20c00000 2018-12-17 12:37:40 CreateNewBlock(): total size 2533 txs: 2 fees: 2316 sigops 103 2018-12-17 12:37:40 Acceptable block: ver:20000000 time:1545050260 size: 1641 Tx:3 Sig:4 2018-12-17 12:37:40 CreateNewBlock(): total size 2533 txs: 2 fees: 2316 sigops 103 2018-12-17 12:37:40 Acceptable block: ver:20000000 time:1545050260 size: 1641 Tx:3 Sig:4 2018-12-17 12:45:19 Acceptable block: ver:20000000 time:1545050688 size: 10306 Tx:14 Sig:29 2018-12-17 12:45:19 UpdateTip: new best=00000000000000000378d55568094cb4aa60155798edd1e4d046c7bfac286a42 height=561211 bits=403185479 log2_work=87.757312 tx=268355330 date=2018-12-17 12:44:48 progress=0.999998 cache=0.1MiB(131txo) 2018-12-17 12:45:19 CheckAndAlertUnknownVersionbits: 34 of last 100 blocks have unexpected version. One example: 0x20c00000 2018-12-17 12:45:19 CreateNewBlock(): total size 13214 txs: 34 fees: 20859 sigops 165 2018-12-17 12:45:19 Acceptable block: ver:20000000 time:1545050719 size: 12322 Tx:35 Sig:55 2018-12-17 12:45:19 CreateNewBlock(): total size 13214 txs: 34 fees: 20859 sigops 165 2018-12-17 12:45:19 Acceptable block: ver:20000000 time:1545050719 size: 12322 Tx:35 Sig:55 2018-12-17 12:51:16 connect() to [2a02:1812:1426:a600:84e:ea09:30b:2772]:8333 failed: Network is unreachable (101) 2018-12-17 12:51:40 connect() to [2001:8003:258d:3200:43:6475:500:8286]:8333 failed: Network is unreachable (101) 

submitted by MattAbrams to btc [link] [comments]

"Although Bitcoin was intended to be a decentralized digital currency, in practice, mining power is quite concentrated ... [O]ur work further motivates the study of protocols that minimize 'orphaned' blocks, proof-of-stake protocols, and incentive compatible protocols." [abstract + link to PDF]

submitted by flexibeast to compsci [link] [comments]

Another bug in ABC? "The timing of the blocks is spaced very far apart, making the odds of two orphaned blocks occurring by coincidence, right after a fork, very low. Because of the low probability, we had hoped that someone would investigate whether there is still a second bug in @Bitcoin_ABC ."

Another bug in ABC? submitted by cryptorebel to bitcoincashSV [link] [comments]

Bitcoin [BTC] experiences orphaned block; not a rare occurrence: BitMEX Research

Bitcoin [BTC] experiences orphaned block; not a rare occurrence: BitMEX Research submitted by leftok to atbitcoin [link] [comments]

Skeptic’s lens: Orphaned blocks in Bitcoin are becoming less frequent as miners improve direct communication

Skeptic’s lens: Orphaned blocks in Bitcoin are becoming less frequent as miners improve direct communication submitted by ThrillerPodcast to thrillerpodcast [link] [comments]

According to @el33th4xor, the two orphaned blocks related to yesterday's Bitcoin Cash fork are a "temporary hiccup." When you are dealing with so much money, mistakes cost jobs and change lives. We decided to stop mining with @Bitcoin_ABC as a result.

https://twitter.com/ProHashing
submitted by 2763rxmh to bitcoinsv [link] [comments]

Bitcoin [BTC] experiences 'orphaned block'; not a rare occurrence: BitMEX Research

Bitcoin [BTC] experiences 'orphaned block'; not a rare occurrence: BitMEX Research submitted by ChantellVeloz to bitcoin_uncensored [link] [comments]

@binance: RT @BinanceAcademy: Recently many outlets have reported an “orphaned block” in the #Bitcoin $BTC chain. They are, in fact, stale blocks and are entirely normal. Learn about what an actual orphan block is on @BinanceAcademy https://t.co/1nmcwqmfUL

@binance: RT @BinanceAcademy: Recently many outlets have reported an “orphaned block” in the #Bitcoin $BTC chain. They are, in fact, stale blocks and are entirely normal. Learn about what an actual orphan block is on @BinanceAcademy https://t.co/1nmcwqmfUL submitted by rulesforrebels to BinanceTrading [link] [comments]

Bitcoin [BTC] experiences orphaned block; not a rare occurrence: BitMEX Research

Bitcoin [BTC] experiences orphaned block; not a rare occurrence: BitMEX Research submitted by n4bb to CoinPath [link] [comments]

Block propagation and orphaning in Bitcoin over time

Block propagation and orphaning in Bitcoin over time submitted by nullc to Bitcoin [link] [comments]

[BLOG] How Bitcoin SV Block Reorgs and Orphans Affect You

[Head over to the Bitstocks blog to read the article]
Bitcoin SV gives you access to the benefits of Bitcoin - without having to understand the nuts and bolts that make the blockchain tick.
At the same time, opponents of the #BitcoinSV (#BSV) project periodically set out to befuddle and frighten the public by framing some of the more technical features of the Bitcoin protocol as ‘struggles’, ‘attacks’, ‘accidents’, or ‘BSV woes’.
And so, today’s article sets out to clarify a much misunderstood feature of Bitcoin’s design as retained in the BSV protocol: block reorgs and orphaned blocks.
submitted by Bitstocks_ to bitcoincashSV [link] [comments]

Was there a period of high orphaned block during Bitcoin history? (Fack check on /u/nullc claim)

and either are large blocks due to orphan and bandwidth risk.
This is a common misunderstanding about the system. To the extent that miners are concerned about orphaning at all they can eliminate it by centralizing further. This is precisely how they've always responded to high orphaning in the past.
Moreover, if for some reason they couldn't take the high payoff strategy of centralizing further; they can simply use improved relay techniques which render block propagation times arbitrarily independent of Bitcoin size.
http://np.reddit.com/Bitcoin/comments/5hggzt/letting_miners_decide_the_block_size_is_like/db02lq5
submitted by Ant-n to btc [link] [comments]

Bitcoin Q&A: Orphaned blocks and stuck transactions

Bitcoin Q&A: Orphaned blocks and stuck transactions submitted by cyberlife88 to Bitcoin [link] [comments]

Hi everyone. I can see that most fork of bitcoin reduce the block time to have faster transaction, and that this change cause an issue : orphaned block. I know what is a orphaned block, but the thing I would like to know is : what are the negative result of orphaned block ?

Orphaned block issues
submitted by amadeus82 to Bitcoin [link] [comments]

Maxwell warned that without a cap, big miners can drive out their smaller competitors with huge blocks. This is actually not an attack. Instead it's the way Bitcoin was designed to scale. Orphans are market discipline for intransigent miners who can't keep up. This tweet sums it up.

Maxwell warned that without a cap, big miners can drive out their smaller competitors with huge blocks. This is actually not an attack. Instead it's the way Bitcoin was designed to scale. Orphans are market discipline for intransigent miners who can't keep up. This tweet sums it up. submitted by ratifythis to btc [link] [comments]

aantonop - YouTube Block Digest #221.5 - Orphaned Block How does a blockchain work - Simply Explained - YouTube I found my first block Bitcoin mining today with Kano's ... PIVX Staking - Orphan Block?!?

Although orphaned blocks can be quite a headache for miners, they actually occur more often than most Bitcoin enthusiasts would like to admit. Blockchain.info keeps track of all the orphaned blocks that appear on the network, and there is usually 1-3 of these mishaps every single day of the week . Types of Blocks in Bitcoin Blockchain. Ten minutes is an average block find time for Bitcoin. In reality, it can vary from a few seconds to even a few hours. For example, it may depend on how fast blocks are being processed or how fast nodes exchange data with one another. Miner A and miner B solved block 101 at the same time. 60% of nodes got the new block from miner A, while 40% got it from ... Check the Bitcoin orphaned blocks which are not included into the main blockchain. Indeed, in the Bitcoin source code and in more technical discussions, orphan blocks and stale blocks are two separate things: both are not part of the longest valid chain, but in an orphan block it is because the parent is unknown, whereas in a stale block it is because that part of the chain is known to no longer be longest. However, in general discussions people almost always mean "stale ... Orphan blocks are most commonly linked to the popular Bitcoin cryptocurrency network. In the case of a valid transaction existing on an orphan block, they are added to the next valid block ...

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aantonop - YouTube

aantonop's YouTube channel is THE place to find free, unbiased educational videos on all things Bitcoin and open blockchain. Subscribe & join the channel to ... I'm so excited I actually found a block with 19th on Kano's pool today with my antminer s7 while heating my house and its snowing outside. ***Make sure to su... Article - http://bit.ly/2E89GkK Ledger Blue / Ledger Nano S https://www.ledgerwallet.com/r/ae80 Trezor Hardware Wallet https://shop.trezor.io?a=rdysv8k8w29q ... Bitcoin Q&A: Empty blocks, orphan blocks, and valid chains - Duration: 14:44. aantonop 6,984 views. 14:44. How to start Proof of Stake Mining - a cryptocurrency guide to what's needed! And the ... Bitcoin Q&A: Orphaned blocks and stuck transactions - Duration: 9:06. aantonop Recommended for you. 9:06 . Coin Staking What is Orphan Block? NavCoin Pivx Bitcoin - Duration: 4:28. crypto ...

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