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

Block 18931

Hash
000000e4029ed1a192fa909257bd7ea23e51903ed87871a78e44e3060b990036
Confirmations
22169
Time
2026-10-09 22:43:07 UTC
Median time
2026-10-09 22:34:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a039047a64fafe5ecc5227e15a2e2be96a63232ab54a3dc98a8af5ff6588597b
Previous block
0000000a737a9fb75215da263aa8ef074a7cbac943e7057b11134ce1d89d282b
Next block
0000011151631b36760e2d912068cde800c6086cea00141a5a97a536f575d436

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 18931 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
6a696fe687498ee1f4834d8699e09fe0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a039047a64fa…f5ff6588597b coinbase1250