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

Block 19255

Hash
0000001f447b4af0ca4a9de439a8fd0df85277a5b757510cd15dfac59cf69c4f
Confirmations
22100
Time
2026-10-10 07:52:24 UTC
Median time
2026-10-10 07:44:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f8abcb20cbf403e3fca46a2a4c1cff631bfe6c518fd07094a4da2b37c5dfdc39
Previous block
000000b89083a5f171e3e71b81152f3c7c9399eb5465ed9729bf87d6e75d78b6
Next block
000000af4004c1e014e5bcf330593b4967e632e19f808b4038f8f561c0804036

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 19255 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
ad338f7e1b29b81591b5439086943d53… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f8abcb20cbf4…2b37c5dfdc39 coinbase1250