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

Block 21675

Hash
0000011ec5520c56e25629138177ed9aef729e40ba130333d100bb9ed402b4f3
Confirmations
19511
Time
2026-10-13 03:13:17 UTC
Median time
2026-10-13 03:05:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
21443a74cd73c3df41947b7222580b5717c72f344d28e3a66aee51edc0dc827c
Previous block
0000002d023fe9cf9ff22be35f78938c337222ab0e8042d02a44c7b8d835413f
Next block
0000000dcad75ec07d0465291c701ad77bd56bc69e27f1484f95b67e14c7d6d9

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 21675 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
049fddf89e10e23c0b4571a1af857797… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
21443a74cd73…51edc0dc827c coinbase1250