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

Block 21435

Hash
00000136f272f9cd44be14bb692ac12dfa5305833958cf7ef235abdb1b86a4fd
Confirmations
20537
Time
2026-10-12 20:30:47 UTC
Median time
2026-10-12 20:22:02 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
aaae41bf5d59e94760f4e2b7d377226c913a124cda88182553848e0673a11bfc
Previous block
00000033341abebfce7a89d11b31ee95ebcc35729c090a9fce4de60d1da2ea61
Next block
000001150f2ffa439fe32d3e35e676f4f7f96b4e9b736c9a82a64792d3ff8baa

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 21435 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
d596ab9a7fee163e0fe65842d2fa0402… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
aaae41bf5d59…8e0673a11bfc coinbase1250