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Bitcoin Core versions run by mining pools

An archive of bnoc.xyz · view original topic →

· b10c · #1 ·

By looking at which pools mine P2A spends, we can guess when a pool roughly upgraded their getblocktemplate node to Bitcoin Core version v28.

pool first spend first creation total inputs total outputs
MARA Pool 867278 (2024-10-25) 881521 (2025-01-30) 186633 186660
ViaBTC 883626 (2025-02-13) 883626 (2025-02-13) 412064 412084
Foundry USA 896194 (2025-05-11) 850457 (2024-07-03) 884113 883988
F2Pool 898061 (2025-05-23) 850307 (2024-07-02) 737765 737769
AntPool 900676 (2025-06-10) 867352 (2024-10-25) 479620 479701
SpiderPool 907615 (2025-07-28) 907610 (2025-07-28) 368225 368199
Ocean.xyz 925458 (2025-11-27) 925458 (2025-11-27) 21173 21181
Innopolis Tech 927765 (2025-12-13) 927765 (2025-12-13) 1 1
Braiins Pool 956252 (2026-07-01) 850000 (2024-06-29) 61275 61274
Unknown 957382 (2026-07-10) 957382 (2026-07-10) 36982 36987
Solo CK 959115 (2026-07-22) 959115 (2026-07-22) 1224 1224
Mining-Dutch 959195 (2026-07-23) 959195 (2026-07-23) 1820 1817
CleanIncentive 959666 (2026-07-26) 959666 (2026-07-26) 14505 14505
NiceHash 964462 (2026-08-28) 964462 (2026-08-28) 280 280
Luxor - 962760 (2026-08-16) 0 4
BTC.com - 961321 (2026-08-06) 0 1
Binance Pool - 958434 (2026-07-17) 0 1
SecPool - 896193 (2025-05-11) 0 3
Mining Squared - 894977 (2025-05-03) 0 1

As per Bitcoin Core :: Software Life Cycle, v28 was released on 2024-10-02. It seems like MaraPool upgraded fairly quickly. ViaBTC upgraded sometime in early Feburary 2025, about four month after the release.

On 2025-04-14, v29 was released. In May and June, Foundry, F2Pool, and AntPool upgraded to v28. SpiderPool upgraded sometime in July. This matches what I’ve heard elsewhere: some pools are lagging behind on purpose.

Braiins, SecPool, MiningSquared don’t have much hashrate, so we don’t know if they would mine a P2A spent if they see one. Similar with the remaining pools not appearing here.

The same can be done with Ephemeral Dust to see when the upgraded to v29 as described in Observe which mining pools mine TRUC, P2A, and Ephemeral Dust · Issue #101 · 0xB10C/mainnet-observer · GitHub.

· Antoine Poinsot · #2 ·

Which appears to exactly follow the release of minor release 28.1 (2025-01-15).

28.2 was released at the end of June.

⚠ post #3 missing (not fetched, or removed/moderated on the source site)

· b10c · #4 ·

As of 2026-09-03:

pool first ephemeral dust
MARA Pool 894455 (2025-04-29)
AntPool 900676 (2025-06-10)
F2Pool 901146 (2025-06-14)
SpiderPool 913602 (2025-09-07)
Ocean.xyz 925458 (2025-11-27)
Innopolis Tech 927765 (2025-12-13)
ViaBTC 949140 (2026-05-12)
Foundry USA 949159 (2026-05-13)
Braiins Pool 956252 (2026-07-01)
CleanIncentive 965144 (2026-09-02)

Bitcoin Core v29.0 was released on 2025-04-15. MaraPool mined their first block with it two weeks later. AntPool and F2Pool upgraded (at least partly) about two months after the release. Spiderpool upgraded on 2025-09-07.

· b10c · #5 ·

mainnet-observer now has daily updated tables for both P2A and ephemeral dust:

· b10c · #6 ·

I’ve updated the two tables above. Since January this year, there are the following possible upgrades. For the pools that don’t frequently find blocks, the data might not be accurate. For these, an upgrade can always have happened earlier, but we didn’t know about it until they ended up finding a block.