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

Block 21124

Hash
0000004a78ba50817b7f4891d02cda8af9a759e76a003c48199049e7cad3ffb5
Confirmations
19847
Time
2026-10-12 11:46:17 UTC
Median time
2026-10-12 11:37:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c5e92e5f04410ff67a6ff4f1e93675cd85a837b5e716622afdee9c797e1c0b4d
Previous block
00000064efa337f9c223c120f42fb2573e5401d937a830ed6971ec3715c4ea8a
Next block
0000009a17e9ff7674655caf4dd8e507ba4f42e6540dff61fc2fec88f71317d6

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 21124 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
46524b43c75732b24e618987c83a56e4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c5e92e5f0441…9c797e1c0b4d coinbase1250