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

Block 19402

Hash
0000004e0dd0784d471ad375535caa8fccf0b786adb34a6b33682b32323323ad
Confirmations
21569
Time
2026-10-10 11:59:06 UTC
Median time
2026-10-10 11:51:19 UTC
Transactions
2
Size
3,084
Weight
11,826
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
38b30746e3ead73f4d2ec674b729e40404a0fb07d2cca7d93f83fedc03b3999a
Previous block
000000dc774d883fb530f2f0202c576d25f8cd2894ab41176c36843c27392056
Next block
00000084b988004b2e6a147147cfcb38fe7232b2fb783606de0850594e0cd48f

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 19402 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
5b1585d55c1f5c900932a2ef05ab6a40… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3de47a68bb5f…3c1dd8ab0696 coinbase1250.00000424
cc2a46a5ec72…ea2a8bf38fdd pays to P2MR221.97900590.00000424