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

Block 21627

Hash
0000000613e6e3a5d4afa53330b8fb43b92240d5253df85e968b6c5c03f5e033
Confirmations
20274
Time
2026-10-13 01:51:47 UTC
Median time
2026-10-13 01:43:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
52566e9214a3f90c6e51c0d133c4b669f0a69e1d7f15a16212f42f08f470d0ce
Previous block
000000f901fe8e21d066c45ec2a0e4bbdaf50cb9fc454f90fd5c1bf03e3dbe40
Next block
0000000162e263cc0f00aed2641bf8bba57832ade9f8f28117bd45e57be359c0

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 21627 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
65623268a1efb61e2b10c5ca591201d7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
52566e9214a3…2f08f470d0ce coinbase1250