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

Block 19163

Hash
000000240187998ec68580d2a30c50b164126713691115d2ef486fb3a5b87f53
Confirmations
22974
Time
2026-10-10 05:17:31 UTC
Median time
2026-10-10 05:09:18 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
885f9082fd46dca6beffce2064ca0608943520b8defd63fa38fecd8b4b2ef4bd
Previous block
0000004de797b866e1494247e9aafb72768ff8a6086137a1842373055ce5d172
Next block
000000ec3cf33b95b80395e7b584cee01351474181b9f1f20ec25da8e43cdf77

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 19163 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
4fdb128d8ea42eb6d71b991b3798059e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
885f9082fd46…cd8b4b2ef4bd coinbase1250