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

Block 18681

Hash
00000047aafa42a3fb95fbe239a4b1ad8fab14eec9dd133c23e6a53376729b0b
Confirmations
22965
Time
2026-10-09 15:46:48 UTC
Median time
2026-10-09 15:39:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
af1f271a01d26a16633aacf37fc2ded4299a17e773907f2ab47d74467314186a
Previous block
000000623ddcec62818064773e3985f7860fe6a77f24814d51bb913d950566f6
Next block
000000f3a2d978417acc70a6c2352c207603c20db9a96dba2c39359a04947b0b

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 18681 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
17f56ddfa39ac83eec9835062679ae4b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
af1f271a01d2…74467314186a coinbase1250