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

Block 21158

Hash
000000652af35f74c9ac99cb2fa986208cf72de768fd7ad4c25009bd145be809
Confirmations
20007
Time
2026-10-12 12:42:30 UTC
Median time
2026-10-12 12:34:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
405beff4caf4410fca7e4d4adcdc1c9e34cac82965f9bff24629fb3b2daaab68
Previous block
000000fb3bf1a59d30aee6e4919daf061e6b3e0947f1fa7fd61befe12d1d191d
Next block
000001244d687d43db5c9db1b7acf34ab651a7e3e382e6889a8ea1a8dcb4b1ee

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 21158 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
29fdc8b0888b88ddbde776ed3cc687e4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
405beff4caf4…fb3b2daaab68 coinbase1250