Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 18911

Hash
00000075b449250e604be728801b84a6df0b747625a8c37b8190593a40fec1cc
Confirmations
21252
Time
2026-10-09 22:09:36 UTC
Median time
2026-10-09 22:01:06 UTC
Transactions
2
Size
2,991
Weight
11,445
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
89450f710f33edfb7340ddc700cb50da3d37ce5df868944c2bd2d5d1cea33a7e
Previous block
000001098dd01e59bdb730060a796fb0473f140d44d72a9e7a6252c864ac8c47
Next block
000000da68ba1ab70f22e96c5968e507ca83d233efa2b8c189cc17429dcf250b

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 18911 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
c787caeaeb706793066358423b49a8cd… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6d161ca404c5…0a9446e957ca coinbase1250.0000117
fcc851faf080…3754d5d27e4c spends P2MR110.00998830.0000117