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

Block 21669

Hash
000001395de4ce8efbaf3859e6b5c8238938a687545b2078c4f8350a27969a5e
Confirmations
20296
Time
2026-10-13 03:03:34 UTC
Median time
2026-10-13 02:54:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
d6ce2ae55a12c91174b3d89437a8d8cd2102392a7475209281119d991d35fb5f
Previous block
0000009c34c1c06f305c50c8f034f57f6fad049d633e1618e822cddcc92605bd
Next block
0000006140f8cb930a972326f8acda1eb01208a9712c097a9f79e49741b497bf

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 21669 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
703290072b88d2bf5bb1c43abb0ef47c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d6ce2ae55a12…9d991d35fb5f coinbase1250