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

Block 18959

Hash
000000c40ac7a8b1ec32e612519c3f3aabdbee664fd4d0e39700e5d23912b1fd
Confirmations
22690
Time
2026-10-09 23:29:40 UTC
Median time
2026-10-09 23:20:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
830f8aed23276307a07b9adfb7afb1f84d9a7459ba51b96550d9e985dccd5029
Previous block
0000006839b907f3db5590942a294bcf0b84ca51551094728e0706831655205c
Next block
000000e41ed5d613b4080c91cab873a8f72242f5ed19ab5398731cea0f29d3fd

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 18959 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
56aa21997b57a04042349ef43245ff3b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
830f8aed2327…e985dccd5029 coinbase1250