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

Block 21672

Hash
0000008254f16c77645234b7f8d4d94c0cfb68d4dbb0bf388eadb998ad575870
Confirmations
19301
Time
2026-10-13 03:08:23 UTC
Median time
2026-10-13 03:00:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
fc6a0060305a5941dcd9c8bbfbf6068b467e436edd48a1e0efd259b8f722f530
Previous block
000000e05149d315cd53e001b11001bff8f8f7add4630bd427364f7040dd2df3
Next block
000000ca9e533a026c29c298b4aa65d04552a1b0492ea1c2e383c001a4cbf4ac

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 21672 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
b0e4fa49b1cc6116e3e47833af968a1c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
fc6a0060305a…59b8f722f530 coinbase1250