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

Block 18608

Hash
0000003802f99fb33f0c9fd92b7ec8dc9be54002293d286c8eb4bd30e9508870
Confirmations
21544
Time
2026-10-09 13:46:38 UTC
Median time
2026-10-09 13:38:15 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d3059e980913c1282c8c04b66fa5f9ec77e7eb68cdf0c8d78ab0b0feacf6627a
Previous block
0000003b2e5f4ca26df789f33de765da89bf922f1032633950cf68f3b3680524
Next block
00000042e62bb9b45f4c89c6458d871886c887fb6adab5a6e758ca2e4cf1029b

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 18608 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
870c3101872c25b31c92e2e6db720b77… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d3059e980913…b0feacf6627a coinbase1250