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

Block 19436

Hash
0000009edff6f6c2832221757907488fdc8a6b348149e67059180621aad0defc
Confirmations
21866
Time
2026-10-10 12:56:57 UTC
Median time
2026-10-10 12:48:07 UTC
Transactions
2
Size
3,046
Weight
11,665
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
0abe303d5f1f43cb42eb585e15d10bc134ae1096e46c495cea52245e6963cdf2
Previous block
00000054953f486e78a6871c758a45e2d4c7af9a80f9aab825a1ae5d1dbc41b9
Next block
000000fef89caeea9f09b28231714326c5c124c28509c0a47d9edc83b93fb29b

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 19436 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
0806843af4bab4b0aa4a454306042722… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
790908ef4713…833e48cbb6b6 coinbase1250.00000344
07f79f71dcf4…e0c0bcf2697c spends P2MR pays to P2MR120.799993120.00000344