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

Block 20642

Hash
000000c72231aaf0305d5f7301eb6bc7f5c032dbcdd88f7efcf2e2f7e429e38c
Confirmations
20550
Time
2026-10-11 22:27:30 UTC
Median time
2026-10-11 22:19:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c1cad12358ebfd7e40c9c6a72891863db5b91184237743f899ab4e33ad2e00a2
Previous block
0000013a5c726cbd6c301181ee4992745a6f69b6db3283382f095251e9cd0eac
Next block
0000008a8213b0054631f311ea9fb2a31189f65dfc93bae99e1bedff573a5c54

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 20642 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
05f89ee10efabf3fab46279b667c76bf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c1cad12358eb…4e33ad2e00a2 coinbase1250