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

Block 18345

Hash
00000062b88f22b3ad337686a61d57ada34b18305106444dd74562a0d0d86e1e
Confirmations
23961
Time
2026-10-09 06:29:04 UTC
Median time
2026-10-09 06:20:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
974518cbb257f2d6b01fae97bb2a985e1e5fb1437129de450460cd04ef872b5c
Previous block
00000060ecdcdc33199a6347c243e03af331b682b54f9226534a8cc36c9ecea0
Next block
000000fc42bd10e785f10cbb2eec65983059505a7785c1d248308d225f381048

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 18345 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
07098f8fc80fc5d964db72508b9b2ab5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
974518cbb257…cd04ef872b5c coinbase1250