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

Block 19979

Hash
0000006b48cdb7bf8e39238ccd8e9bc8ebd1fa0581c060a59868143c223fb0bc
Confirmations
21087
Time
2026-10-11 04:05:20 UTC
Median time
2026-10-11 03:56:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7b062d044e8579289fe294a911fa1afe0db2da032276bb887c391fe83d8c3d1e
Previous block
0000009aa8182429dfb769a3297eddb8d822d10d6d3712df694b53f00fd64b29
Next block
0000006bd524796b4facb197c3cfe004ae8174428540bddbd1e9d15bcc0e7a3d

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 19979 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
4fd08cfa06cb7f6eee138d38bdc8081b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7b062d044e85…1fe83d8c3d1e coinbase1250