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

Block 21178

Hash
000000f9c07c683e2a1bce64c946ba95e8830d53c9598e13859bdbceeb595063
Confirmations
19714
Time
2026-10-12 13:16:47 UTC
Median time
2026-10-12 13:08:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
1b857e38bb9202b30f9c9eafd4e18a8d9058eefcac69b3595c0c74028958e022
Previous block
0000012ef864c74889b81f1d9665e297490c396ab0a219abe8bed09db67a7a11
Next block
0000009d54b46143068281f29a26095572ba0c23c8ea79e363c90cc16384d9e1

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 21178 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
e6537c5dca6a9406084036e1f2eaa5b3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1b857e38bb92…74028958e022 coinbase1250