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

Block 18532

Hash
000000119e27d0278bde2e85911cbde8b4869cfc8da82158dfbae27d70f9fb55
Confirmations
21959
Time
2026-10-09 11:42:08 UTC
Median time
2026-10-09 11:33:46 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f1f3b719a4c8f464ae070d41a83426365ac4a6b2f37e1973c69d7dea362fd732
Previous block
00000087d252edaa5e4d7d16b17ad4409e75e3d83646fb8395445a782e1de321
Next block
0000010c9e68de7bf85dc5f47d58e27cb80d40a36539c60559618567bcc89f31

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 18532 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
5552fb26c89666dbac982c84de4b40db… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b308b779685d…cc1c563941d6 coinbase1250.0000031
6316013b5257…8a090a865aca pays to P2MR1210.99987580.0000031