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

Block 18762

Hash
0000003826aa125c3058fe157fddb4d9722679eef0b850403ac648f488ff61d8
Confirmations
23494
Time
2026-10-09 18:00:43 UTC
Median time
2026-10-09 17:52:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
0ffc1ff38cd293243374b761b7fa13055c0ec9f439b839b9c7a97ef778698f91
Previous block
000000099a99d2288033a1d78b8cff9bca877016a0f4bf20e82b5996ba312645
Next block
0000004dddc5e97bbbd01a1e30cd5a7dd217c7ee6aa21fa25190e9c0be390cfd

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 18762 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
67d3d22d3befd6e1ceade989b14d3183… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0ffc1ff38cd2…7ef778698f91 coinbase1250