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

Block 18276

Hash
00000119085dc9bf9564024a72daad4250ed0c239a8cabed24887ee64fb4137b
Confirmations
23403
Time
2026-10-09 04:32:53 UTC
Median time
2026-10-09 04:24:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
164d40118d538418e8df9eecd9d6c8b18c0833d0096bb25105c26440f9ee200b
Previous block
00000024e3941005e6b5e6e6a442922857a6e88974d5c852251a49f389e0d858
Next block
00000053e2a0ace15acaeb6b63d8c5f86335a6bf6adf09a52b73085857fc6318

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 18276 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
671b7552bc6969c3ec52d62aabca8071… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
164d40118d53…6440f9ee200b coinbase1250