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

Block 19185

Hash
0000007c1b56f5a5f5e9ed5aa2dc14ad8a0e913d3f521f6f2b9aebd0b36c3497
Confirmations
22822
Time
2026-10-10 05:54:56 UTC
Median time
2026-10-10 05:46:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8bb3ec9b9c2901c4313b9f054d7037731f9f7ef029bece621e5e0d2150e143e2
Previous block
0000001262ab88a8d798b4a7292fe801a41b5d324c1d64abf77d406d167e9ff6
Next block
000000969e3adb85e63a477b84c7174b0c40553e5d68f6ae32ad334e4faab03a

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 19185 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
8e721269f1dc5b6c12ed4fa092861b21… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8bb3ec9b9c29…0d2150e143e2 coinbase1250