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

Block 19407

Hash
00000084ff36b785b2ee8fa84b233e11bced2152ec76eb4518f8fdf44cc5effb
Confirmations
21768
Time
2026-10-10 12:07:38 UTC
Median time
2026-10-10 11:59:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8f664e84a48b01aead7c579ce488dc64a904ca705a62fe0845b5a18a3ad9cb38
Previous block
0000010e01e45b3ba026989365951aea76bc9855d94adb77b3b2752348a4cacb
Next block
000000099a8f42a02af5001ae143d160f6e1fbf31a75ffc9db6ff24f7e0996f8

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 19407 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
ba44410f95f23f2302d3f077e2639f56… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8f664e84a48b…a18a3ad9cb38 coinbase1250