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

Block 18697

Hash
000000dcf677f28bfe8b6177a84eb59ee158e13ce498b57eafff5b085b1fa216
Confirmations
22196
Time
2026-10-09 16:13:04 UTC
Median time
2026-10-09 16:04:55 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bc6474f7788ca363bd02a3734342e10604b4572c28dad301e23cbce10d77f6d8
Previous block
00000063872e415d8afa93a6ee9e525c2a32af938f79b3cc31ddf880666f75a3
Next block
00000001f9e6ddf34e5508d67ff166352f88651ff312e7a9b2f332563c5f851b

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 18697 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
e086217ac4830686260df622f2a70aa0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bc6474f7788c…bce10d77f6d8 coinbase1250