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

Block 21906

Hash
00000093b103519656ab8559807a56f15fc612efe03acdf6ed78bc72dfc26665
Confirmations
19976
Time
2026-10-13 09:36:51 UTC
Median time
2026-10-13 09:28:12 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ecd3a5d8a23bbfd1851e2a1cfdd5d0911ef4011596d0e4ef1aba0f56f3a81172
Previous block
000000d59ba9b893678d3b354ebacc355573960c84596919141ae9290207bb00
Next block
000000c16667adb5969bf2f5c661370f617daa7cdf76cbe348b502455d92ec4e

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 21906 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
803b4aa285d21fe743f3501ba664ea61… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ecd3a5d8a23b…0f56f3a81172 coinbase1250