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

Block 21291

Hash
00000006bb777c62e6ab61a4b24ee33e48211cb33ae583a950e420f002372f45
Confirmations
19133
Time
2026-10-12 16:29:27 UTC
Median time
2026-10-12 16:21:17 UTC
Transactions
2
Size
3,166
Weight
11,908
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
54a06a4b805faf8c7c0f5fcc5537ee7e3dc0e6afd2833c7f663f28eaaf8bf98f
Previous block
0000006791ff8bf38dd68ed196a10cd118561bc552447509735ac119b579fea0
Next block
000000f818ad3331ab0449e691d6bf2f19b726f68a152ac592b4062fc81baba1

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 21291 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
712bfba4e28f74318a4ff2374d45c9f1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8a599ec9823e…c42bdd54e882 coinbase1250.00000466
f5079247956d…4299d1a52982 pays to P2MR220.019971940.00000466