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

Block 21728

Hash
000000843016a40bc1251fb929f87f9a41896aed90dcec5785612da45581e7b6
Confirmations
20063
Time
2026-10-13 04:41:07 UTC
Median time
2026-10-13 04:32:30 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
edc23a4a9057ac773e251a7466d85eae064bdea1963fb7c64802141cd3ae80a9
Previous block
000000660061c84802a2e8aac94502373781f9360c6e0d6f9075f57b223482f4
Next block
0000006fca2c7161d738fabfcd4c70776c7bebee172ad0965e5e127d7f771b01

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 21728 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
47a70427d9d0cea10dacc96480a1aa81… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
edc23a4a9057…141cd3ae80a9 coinbase1250