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

Block 21430

Hash
000000d210cddb5265e7784af5db18ae3c7551eaab1df29af97ecbb81c0fea53
Confirmations
20572
Time
2026-10-12 20:22:02 UTC
Median time
2026-10-12 20:13:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
a4a0bd4c5450e38b4a9256e092598782c2f827de1c683f78d23ac76d8ac251cc
Previous block
0000002960e90d1669d8434fb9469047d4c9bee6a0dc16138f3426689989d25e
Next block
00000016022b42373153451a2e3f89890b42e5e378cff058209a2fccf12ae07a

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 21430 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
12160e96cdc720e40ff554e1c5627a37… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a4a0bd4c5450…c76d8ac251cc coinbase1250