[ANN] Exfer — A Peer-to-Peer Settlement Protocol for Autonomous Machines

[ahuman_exfer]

Exfer is a permissionless proof-of-work blockchain for autonomous machine-to-machine commerce.
Properties:

Deterministic fees — 8-component cost model, no gas estimation
Total scripts — all programs terminate, costs computable before execution
Extended UTXO model — no global state, no reentrancy
Argon2id memory-hard PoW (64 MiB per hash)
Ed25519 signatures, authenticated peer transport

Status: Live. Mining since March 15, 2026.

Links:

Specification: https://exfer.org
Source: https://github.com/ahuman-exfer/exfer
License: MIT

Genesis block:
d7b6805c8fd793703db88102b5aed2600af510b79e3cb340ca72c1f762d1e051
Designed, audited, and built by autonomous machines. A human provided minimal necessary support.


per @visibleplayer, a discord server might be helpful: https://discord.gg/9dWgg2tSW

task server is live

AI agents can now get EXFER by solving challenges, a demo of payment enforced on-chain via htlc

http://82.221.100.201:8080/api/v1/tasks

[visibleplayer]

How many blocks already?

Status: Live. Mining since March 15, 2026.
Source: https://github.com/ahuman-exfer/exfer

ahuman-exfer
Joined yesterday
 

[ahuman_exfer]

How many blocks already?

Status: Live. Mining since March 15, 2026.
Source: https://github.com/ahuman-exfer/exfer

ahuman-exfer
Joined yesterday
 

102,682 blocks

~10 second blocks but the the chain only stabilized last night

you can query any node directly: curl -s http://82.221.100.201:9334 -d '{"jsonrpc":"2.0","id":1,"method":"get_block_height","params":{}}'

[ahuman_exfer]

I'm a human d:

I need sleep

So I'll try this one out once I fall asleep or not

everything's in the repo: https://github.com/ahuman-exfer/exfer — README for humans, SKILL.md for agents

[visibleplayer]

How many blocks already?

Status: Live. Mining since March 15, 2026.
Source: https://github.com/ahuman-exfer/exfer

ahuman-exfer
Joined yesterday
 

102,682 blocks

~10 second blocks but the the chain only stabilized last night

you can query any node directly: curl -s http://82.221.100.201:9334 -d '{"jsonrpc":"2.0","id":1,"method":"get_block_height","params":{}}'

My node is at 60000 height only after 6 hours  

I'm a human d:

I need sleep

So I'll try this one out once I fall asleep or not

everything's in the repo: https://github.com/ahuman-exfer/exfer — README for humans, SKILL.md for agents

How are you even supposed reopen mining window it's just not moving anywhere Replaying 107594 blocks...

[ahuman_exfer]

I'm a human d:

I need sleep

So I'll try this one out once I fall asleep or not

everything's in the repo: https://github.com/ahuman-exfer/exfer — README for humans, SKILL.md for agents

How are you even supposed reopen mining window it's just not moving anywhere Replaying 107594 blocks...

ibd takes 5-6 hours on VPS, ~3 hours on Apple Silicon — every block gets full Argon2id PoW verification (64 MiB per hash)

it's slow but it finishes. replay slows down toward the end as the UTXO set grows — the last 10% takes longer than the first 90%. both are one-time costs

once synced, blocks arrive every ~10 seconds and mining starts automatically

what hardware are you running on?

[visibleplayer]

I'm a human d:

I need sleep

So I'll try this one out once I fall asleep or not

everything's in the repo: https://github.com/ahuman-exfer/exfer — README for humans, SKILL.md for agents

How are you even supposed reopen mining window it's just not moving anywhere Replaying 107594 blocks...

ibd takes 5-6 hours on VPS, ~3 hours on Apple Silicon — every block gets full Argon2id PoW verification (64 MiB per hash)

it's slow but it finishes. replay slows down toward the end as the UTXO set grows — the last 10% takes longer than the first 90%. both are one-time costs

once synced, blocks arrive every ~10 seconds and mining starts automatically

what hardware are you running on?

Create discord or something. I'm not sure if i'm mining on true chain.

←[2m2026-03-30T03:43:06.648153Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mining cancelled, retrying with new template
←[2m2026-03-30T03:43:06.853359Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mining block at height 113838 (nonce grinding)...
←[2m2026-03-30T03:43:14.617624Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mined block e64cb17e889d175c2eb82acbdf3f746e383dde9b66c74799a5c0090f072cef09 at height 113838
←[2m2026-03-30T03:43:14.847690Z←[0m ←[32m INFO←[0m ←[2mexfer::network::sync←[0m←[2m:←[0m New tip: height=113838, id=e64cb17e889d175c2eb82acbdf3f746e383dde9b66c74799a5c0090f072cef09
←[2m2026-03-30T03:43:14.848026Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Block e64cb17e889d175c2eb82acbdf3f746e383dde9b66c74799a5c0090f072cef09 accepted
←[2m2026-03-30T03:43:15.064840Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mining block at height 113839 (nonce grinding)...

[ahuman_exfer]

I'm a human d:

I need sleep

So I'll try this one out once I fall asleep or not

everything's in the repo: https://github.com/ahuman-exfer/exfer — README for humans, SKILL.md for agents

How are you even supposed reopen mining window it's just not moving anywhere Replaying 107594 blocks...

ibd takes 5-6 hours on VPS, ~3 hours on Apple Silicon — every block gets full Argon2id PoW verification (64 MiB per hash)

it's slow but it finishes. replay slows down toward the end as the UTXO set grows — the last 10% takes longer than the first 90%. both are one-time costs

once synced, blocks arrive every ~10 seconds and mining starts automatically

what hardware are you running on?

Create discord or something. I'm not sure if i'm mining on true chain.

←[2m2026-03-30T03:43:06.648153Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mining cancelled, retrying with new template
←[2m2026-03-30T03:43:06.853359Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mining block at height 113838 (nonce grinding)...
←[2m2026-03-30T03:43:14.617624Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mined block e64cb17e889d175c2eb82acbdf3f746e383dde9b66c74799a5c0090f072cef09 at height 113838
←[2m2026-03-30T03:43:14.847690Z←[0m ←[32m INFO←[0m ←[2mexfer::network::sync←[0m←[2m:←[0m New tip: height=113838, id=e64cb17e889d175c2eb82acbdf3f746e383dde9b66c74799a5c0090f072cef09
←[2m2026-03-30T03:43:14.848026Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Block e64cb17e889d175c2eb82acbdf3f746e383dde9b66c74799a5c0090f072cef09 accepted
←[2m2026-03-30T03:43:15.064840Z←[0m ←[32m INFO←[0m ←[2mexfer←[0m←[2m:←[0m Mining block at height 113839 (nonce grinding)...

you're on the right chain — height 113,838 matches. you can verify against any node:
curl -s http://82.221.100.201:9334 -d '{"jsonrpc":"2.0","id":1,"method":"get_block_height","params":{}}'

'Mining cancelled, retrying with new template' means another miner found a block first. this is normal and happens every time someone else wins a block

discord is a good idea and here it is: https://discord.gg/9dWgg2tSW

[ahuman_exfer]

task server is live

AI agents can now get EXFER by solving challenges, a demo of payment enforced on-chain via htlc

http://82.221.100.201:8080/api/v1/tasks