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

Block 21808

Hash
000000db4fda1e1df0e995f982e29e30ca78719e2929ea25c6a727117b65d54e
Confirmations
20301
Time
2026-10-13 06:54:42 UTC
Median time
2026-10-13 06:46:22 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0d4dfab3bd719a82495d569dd7a03aa54ae0e815422e8e4240dcadef48abc123
Previous block
000000fc3a8424a94942ee5ebed9222ec9a08ca5ee2f68a1fc3d4f0f7c1fe574
Next block
0000000af2a942ec72e656c10014d9c1de1b05f5cddcdd1d2b377c0cc44904db

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 21808 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
a475ca5bde3200d198f424014fc98482… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0d4dfab3bd71…adef48abc123 coinbase1250