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

Block 19454

Hash
0000007fe844eadb2e8052ee4733682ef7425ccf55c6fde1154a180e17c65d07
Confirmations
21359
Time
2026-10-10 13:26:20 UTC
Median time
2026-10-10 13:18:09 UTC
Transactions
2
Size
3,179
Weight
11,792
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b389df2603680f37aca13a1a1862d54ed242f0c7848353f99d776e3a829eaba8
Previous block
0000009ac9c490b34771f8078ceb6edd66a38763e78938ec66675b43aa137921
Next block
000000c3d6a67677927167915068fcb31c5917d223913de5d7e48a5e801e8280

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 19454 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
a84acb16a6121f9cda6508eb150f3056… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c15d8b0cf65b…2796a297d6c9 coinbase1250.00000406
1f139039dfae…2ffbdf961971 spends P2MR pays to P2MR2118.999594940.00000406