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

Block 21307

Hash
000000e5f7518426c1123ee7b134d9f685c11083c1dbd33ebf6bb56cdbb245ca
Confirmations
19517
Time
2026-10-12 16:55:35 UTC
Median time
2026-10-12 16:47:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
3ef0dd2ed9053f857ea581f7beb0c4670ec24f1011bcc9ccc3e93dfcb81eb473
Previous block
000000357208f2042eea76ebf65374240a24caaa9938dca18011379a97054ec8
Next block
00000059be5f9721766ad7e1d4feb48ff3899aaa8b511d09392fcdb0c25012b1

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 21307 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
d2b80bb0d8fd2723c51799fe1aaad35a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3ef0dd2ed905…3dfcb81eb473 coinbase1250