Unknown mining pool with address 1HGnRsZSiGwkMhCqMkVRxz75gfGrUt2CG3, 1PYDG8rSTbyfrDKKo3kvBP6cCfJqdcEzUh, and 14eyqCii2cBsryd6hY7HiDshAeoGxH77dy

[0xB10C]

This pool mined:

• 263 block to the coinbase output address 1HGnRsZSiGwkMhCqMkVRxz75gfGrUt2CG3 between block 564692 and 604372. The coinbase includes the tag t2CG31HGnRs.
• 243 block to the coinbase output address 1PYDG8rSTbyfrDKKo3kvBP6cCfJqdcEzUh between block 596663 and 604315. The coinbase includes the tag cEzUh1PYDG8.
• 239 block to the coinbase output address 14eyqCii2cBsryd6hY7HiDshAeoGxH77dy between block 564863 and 604182. The coinbase includes the tag H77dy14eyqC.

The wallet including these addresses is listed on walletexplorer as https://www.walletexplorer.com/wallet/0ad3842874c888f3/addresses (archive.is).

[0xB10C]

https://oxt.me/entity/tiid/2116341235

[0xB10C]

The address 1FCMHSWjy6cWPVoKQ5YM7FgY9C2XuMcMQf received 235 coinbase outputs between block 544600 and 565622. The coinbase includes the tag dc6tapk2x8ef. Likely related or the same miner as the above addresses.

The address 18bXSCSXiTD3DB3XEz851VpB4ZK49rkprT belongs to the same wallet. Received 94 coinbases and has the tag 0ghas8edxx9w.

https://www.walletexplorer.com/wallet/053e7c9cb4ad3410/addresses

[0xB10C]

The address 1D8E5NRfu95vLoZgLriYna8EtJejQodLjs received 128 coinbase outputs between block 564824 and 604130. The coinbase includes the tag odLjs1D8E5N. Likely related or the same miner as the above addresses.

[0xB10C]

These are all ASCII parts in coinbase transactions active around the same time. I'm assuming most of them belong to the same entity.

0ghas8edxx9
dc6tapk2x8e
rr6f5kha0m
waok5u
rrzskpkhxgl
vx8ylmbf39r

t2CG31HGnRs
TKZA21EtpPf
cEzUh1PYDG8
H77dy14eyqC
odLjs1D8E5N
RPSuH1MfHqC
DsMX11FXpcY
B7VGL1NcYR2
W5hQo1MrWpS
3hTtJ1CcoUs
Hv4Th3DXUT
MthcH129sqf

[0xB10C]

This shows the activity periods per ASCII combination of these pools. Each dot is a mined block. At around block 565000, the lowercase+digits ASCII combinations stopped and the mixed-case+digits ASCII combinations started. The last block was mined with 611851 by t2CG31HGnRs.

[0xB10C]

The mixex-case+digit blocks are clustered into the same entity by OXT.me that tagged it's blocks with /taal.com/ starting with block 612077. Taal.com is / was offering mining pool services.

https://oxt.me/entity/tiid/2420606377

• coinbase of block with the H77dy14eyqC ASCII paying to 1HHzkojhwQ1wibkmhVNBTmiKAmcWsduT43: https://mempool.space/tx/5f1118188be9b2c3f3968e05b01e252f45e9e3bd6dbf81c3a0958b5afe47d1c8
• coinbase of block 612077 with the /taal.com/ tag paying to 1HHzkojhwQ1wibkmhVNBTmiKAmcWsduT43: https://mempool.space/tx/89f80c2af75b869634eb4e3f276785bad0230a9628e7b4d74864bd12f0d186c5

It's still unclear to me if lowercase ASCII is linkable to the mixed-case ASCII.

[0xB10C]

The OXT.me entity for the lowercase ASCII miner is: https://oxt.me/entity/tiid/2109234910

taal.com and lowercase ASCII have similar activity times for outgoing transactions.

taal.com

lowercase ASCII

[0xB10C]

Additional mixed-case ASCII linked to taal.com: https://oxt.me/entity/tiid/2222232505

Link: Taal.com and https://oxt.me/entity/tiid/2222232505 both paid to 115PxHwpvg7Q2bgCv9yGwq56UyZ6nsNVhS in e.g. this and this transaction.

https://oxt.me/entity/tiid/2222232505 used these addresses and mixed-case ASCII strings

1CF8ud9JiKUcBRThxZpjW5GP8ZU2hmEkCB
1ArCJb9CdFTA4JhdKDZwy72nRxvEgQuWif
1NcYR2XvBEu7JcK56CoWLZyYGZfF6B7VGL

QuWif1ArCJb
mEkCB1CF8ud
B7VGL1NcYR2