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

Block 18750

Hash
000000dc66080cc982f71291f5acffd68a607c1e28a80f8ee24b1e5463f9aa76
Confirmations
23459
Time
2026-10-09 17:40:15 UTC
Median time
2026-10-09 17:32:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d8541f8bd4987a90795c83be88cdbd77c2856aaf7b955bd50a65ea516bd17261
Previous block
000000ecddfb7246cad5e5e9dff268a22ea610793a75b886c3c5fa2e8d1aea5e
Next block
0000009ad2eab71b16cfcd20be253c8c6253a17a57d49e2f896e6ff7cbc9b690

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 18750 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
5e614b7b7f7f95d0f9d5b19e33211647… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d8541f8bd498…ea516bd17261 coinbase1250