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

Block 18340

Hash
0000009fc93fc0d1b5716dfb1b12dfb0d6663df7ac0dd616bf53e3069b450212
Confirmations
23949
Time
2026-10-09 06:20:08 UTC
Median time
2026-10-09 06:11:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5c83527f0de1d5c049d6ffafd1db0bbaea3d66b2469a84b813031214b8c5ccb8
Previous block
00000118b049a89cd917b022053134a307278bab6310b15524c30d0f70eac55e
Next block
000000a8615461aaa93a0a1936d0baefb71904394be0b069c8f0f9d9c00f0a19

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 18340 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
fc47078b181f34d9f69578397b4f6d69… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5c83527f0de1…1214b8c5ccb8 coinbase1250