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

Block 18468

Hash
0000002b2d53f95d2fe158ea191ea44604c0da963e92c33e6119dcd8f0120ff6
Confirmations
22056
Time
2026-10-09 09:55:48 UTC
Median time
2026-10-09 09:47:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4ff0cd729b0a7f09858f1510e82dff78ecea4183e098696c8d052a4df3e328b8
Previous block
000000e1a20cdaa5ddb7b9b21e502ae6a39e1f9ea049e95cd0228872d9159d5d
Next block
000001024c7c29002bc3c8f5fa0ebeabb8c427e3079353e1fcc44b600ae1bed9

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 18468 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
4b40668efdb2e8822f05715ae42a2725… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4ff0cd729b0a…2a4df3e328b8 coinbase1250