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

Block 18725

Hash
000000522fa8be482af9201f81a5058c862697b10f5a01b3ef501ed09f52224c
Confirmations
23386
Time
2026-10-09 17:00:09 UTC
Median time
2026-10-09 16:51:28 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a4337becfe56060e9cf87f00752e9044a4dd80912ec11095d2c243ddd0ff3bc7
Previous block
000000f58fe7bb3c8515abd126a9421d512f1c486af16ced9fa31c0fc0ba3b32
Next block
000000891635183283562f77dbc3a1ea4fc2dbb8417eaee12d8085d1da9d422e

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 18725 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
9f965e46e624ab99928596bcd946abad… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a4337becfe56…43ddd0ff3bc7 coinbase1250