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

Block 21880

Hash
0000011addeaf05bd76c0badd5626a96e6d4d30a4462a43d24e48c9050965aa8
Confirmations
20112
Time
2026-10-13 08:52:24 UTC
Median time
2026-10-13 08:44:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
3412866e3f9b3ce26c3601bdfeb96a94fb84731af0da8230e3cf32d0e14fc1b2
Previous block
000000ae98c265583d47306cab8f3d30b8afcd8e10fcaedc2a44a352f3932016
Next block
0000006c4d5ec171cab1c96a2cd1ff89649a52814aa3ebd6649a21610c814aee

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 21880 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
882242adafa42eaac5832b3360d873fe… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3412866e3f9b…32d0e14fc1b2 coinbase1250