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

Block 18253

Hash
0000000eaa660ff1cf0b2dc468fc838c2292b7b3d3c5a02121e5bbe09b5764d1
Confirmations
22367
Time
2026-10-09 03:55:11 UTC
Median time
2026-10-09 03:46:49 UTC
Transactions
2
Size
6,663
Weight
15,153
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
51bd15ae3f2234d28383f79436389483b25e56b37c3e80a2f0bd20967c7f42c4
Previous block
000000f977e4d5829610177ce592728be88ee8f04bdcc9fe2e9a38bcf918a80c
Next block
00000081e1429bfa9fb75d299b5a837ae64b4816603838cba009049a5d9a7e2f

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 18253 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
5623bbbbeb4657b87eed6b5928a952e3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
15f2c22773e4…dddfcf3c9b33 coinbase1250.00002088
d039e9ad313d…fe312ed73d73 spends P2MR pays to P2MR110.999979120.00002088