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

Block 21676

Hash
0000000dcad75ec07d0465291c701ad77bd56bc69e27f1484f95b67e14c7d6d9
Confirmations
19436
Time
2026-10-13 03:14:55 UTC
Median time
2026-10-13 03:06:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ac7ce367508d58b3b3b22c7e57dcadf81f5fb9e15ff280d2769653c4cd2a99c6
Previous block
0000011ec5520c56e25629138177ed9aef729e40ba130333d100bb9ed402b4f3
Next block
000000bd4358b2aaf6a8a74903248a52c229af0b6565e9b51eddda6267d286e6

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 21676 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
9800887eab1c6b4f41a6796751be9c20… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ac7ce367508d…53c4cd2a99c6 coinbase1250