b10c

@0xB10C

Bitcoin developer and observer. @OpenSats grantee. Previously funded by @spiralbtc, @hrf, @bitcoinbrink, and @coinbase. [email protected] (not an e-mail address)

Zurich, CH

Joined June 2011

215Following

10KFollowers

Pinned

b10c@0xB10C · Jun 24

I've persistent my notes on the May 2023 Bitcoin Core node DoS problems. These are background information for the disclosure from last year. When non-ideal sorting, mass BRC-20 mints, and spy nodes caused a CPU Denial-of-Service on the Bitcoin network: b10c.me/observations/1…

0xB10C's tweet card. In October 2024, the Bitcoin Core project disclosed a Denial-of-Service due to inv-to-send sets growing too large, which I authored, for Bitcoin Core versions before v25.0. I have a few notes and...

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b10c@0xB10C · Jul 18

I have too many other projects currently, but I think this could be a fun side-project for someone: Can we spot public spy-Electrum servers run by Chainanalysis? github.com/0xB10C/project…

0xB10C's tweet card. My primary interest here is finding out how many Electrum servers are Chainalysis honey pots and sybils that collect your data, link your addresses to your IP, and use it to enhance their address-c...

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b10c@0xB10C · Jun 9

Anyone have the contents of the stale block at height 635366 with hash 0000000000000000000e83ae1e2f069094cc1deab4aede641e028df3c8507b41 ? Gotta catch 'em all!

bb10c@0xB10C · Jan 19, 2024

I show historical forks on fork.observer and started a dataset here github.com/bitcoin-data/s…

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b10c@0xB10C · May 22

This is one of my favorite bitcoin blockchain visuals. The share of low/high r and S values in ECDSA signatures. First high-S is made non-standard and then wallets begin to grind r-values to make smaller signatures. mainnet.observer/charts/bitcoin…

0xB10C's tweet card. Shows the distribution of low and high r and S-values in ECDSA signatures per day.

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b10c@0xB10C · May 21

With 100% of the hashrate, it would currently take about 800 days to rewrite the complete Bitcoin block chain. mainnet.observer/charts/mining-…

0xB10C's tweet card. Shows the Proof-of-Work equivalent days.

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b10c@0xB10C · May 20

In sum, there have been about 2^96.5 hash attempts for Bitcoin mining (the cumulative log2(work) is 96.5). It's clearly visible when GPU and ASIC mining started. mainnet.observer/charts/mining-…

0xB10C's tweet card. Shows the cumulative log2(work) done.

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b10c@0xB10C · May 19

Currently, more than ~500000000000000000000000 (500 zeta or 5×10²³) hash attempts are required on average to mine a block. mainnet.observer/charts/mining-…

0xB10C's tweet card. Shows the work required to mine a block.

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b10c@0xB10C · May 16

This is the current hashrate distribution among the top 5 pools when taking AntPool & friends into account. mainnet.observer/charts/mining-…

0xB10C's tweet card. Shows the top 5 pool hashrate distribution (including proxy pools).

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b10c@0xB10C · May 15

More than 42 BTC are now forever lost in provably unspendable OP_RETURN outputs. mainnet.observer/charts/output-…

0xB10C's tweet card. Shows the provably lost OP_RETURN output values in sat.

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b10c@0xB10C · May 14

There have been close to 1200000000 (1.2 billion) transactions on Bitcoin. mainnet.observer/charts/transac…

0xB10C's tweet card. Shows the cumulative number of transactions.

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b10c@0xB10C · May 13

There are currently about 172M UTXOs. Here is the UTXO set composition by output type: mainnet.observer/charts/utxoset…

0xB10C's tweet card. Shows the UTXO set composition over time.

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b10c@0xB10C · May 12

The "Mining Centralization Index" (with proxy pools) is now updated daily on mainnet-observer: mainnet.observer/charts/mining-…

0xB10C's tweet card. Shows the Mining Centralization Index (with proxy pools).

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b10c Retweeted

Stephan Livera@stephanlivera · Mar 27

DMND: The First Full SV2 Mining Pool with Alejandro de la Torre | SLP649 Fixing the problems of FPPS and centralized block template creation with Stratum V2. @Bitentrepreneur, CEO of @DEMAND_POOL joins me to share his thoughts on decentralizing mining, the risks of traditional…

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b10c@0xB10C · Apr 2

How many distinct mining pools should mine >95% of the blocks for Bitcoin mining to be considered not centralized? Pick the smallest number you would be comfortable with.

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