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

Block 18243

Hash
000000f19edd61605d08acaf7fb7dd8d40ff4508242dd885aec5e884115111bf
Confirmations
22726
Time
2026-10-09 03:38:23 UTC
Median time
2026-10-09 03:29:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b42536e8d41d0a968b8fb92a09d54b59af6a20b519f8ad1b784023f7e966beea
Previous block
0000009ac18b485af5b63d88369bdcce31926edd1c627ef32b0b2c3769d03c70
Next block
0000006767cc4c783630660422abb70a2364b34157b20b4fc91740fff73d087f

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 18243 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
4a50586cbe51f849ebb96d5798f51ad7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b42536e8d41d…23f7e966beea coinbase1250