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

Block 18920

Hash
0000008cec3f90e28b05c1b8d5fa3bc64fd3f9e3d0147c9b16f850c8d4fb6973
Confirmations
22025
Time
2026-10-09 22:24:09 UTC
Median time
2026-10-09 22:16:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9da2c6b0a4e035921e4bf611dea76dda4ee7e20202e2867e313c2c3c477bff29
Previous block
000000ec62ab4757f0180a2a9212d699ed6e3bc2eb749bb68fc94de9fbb5bd95
Next block
0000007ec99998357d766869bd85009a9e91ac3620e50bc3881a20bfcec8653c

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 18920 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
3dfefb6c13bce8151f1eb9cd0d9e10e2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9da2c6b0a4e0…2c3c477bff29 coinbase1250