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

Block 21817

Hash
0000001107692b50b6aeadd26913734ea4ee12873eca9b4c477d75ea5c3438e9
Confirmations
20064
Time
2026-10-13 07:09:33 UTC
Median time
2026-10-13 07:01:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
27fee6dd1ce89aafc15354c846deba68fbdb3ad8c19324bfe41fd1bbaa3923b3
Previous block
0000005bc2bf056ef503e2789665c179e11071be51af7c6bdc302325dc57dcdf
Next block
0000003d1839dd952ee1710907f099b860e481677e9042aa05b7dfb7303447e5

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 21817 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
2714e0751066ae86612c67a6c3a0395f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
27fee6dd1ce8…d1bbaa3923b3 coinbase1250