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

Block 18346

Hash
000000fc42bd10e785f10cbb2eec65983059505a7785c1d248308d225f381048
Confirmations
23920
Time
2026-10-09 06:30:55 UTC
Median time
2026-10-09 06:21:42 UTC
Transactions
2
Size
6,663
Weight
15,153
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5724ecbc67732c478afc239048e4cfffb905eb6be2823be371cf635fe6d471d2
Previous block
00000062b88f22b3ad337686a61d57ada34b18305106444dd74562a0d0d86e1e
Next block
000000eefbabbfd510c61c6e8e9c0cadf6a0deac494b3a9ea260f8c76ef5004f

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 18346 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
8a19936fae6dcd15964769331f21bedf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4ca64d3e92b8…657dd84fb37e coinbase1250.00002088
0675b8c89f5b…c169103be52e spends P2MR pays to P2MR110.999958240.00002088