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

Block 18113

Hash
000000cddf5dd679c4fa520219c24b06246875071da43bd7964ecc7c2dd245c2
Confirmations
23439
Time
2026-10-08 23:58:18 UTC
Median time
2026-10-08 23:49:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
c87cdc4d4849328bce063199ec3eba73fb2a4c78291d0c1450836bbb6bb224ff
Previous block
0000004c5146e887b832a4a6571a88aa2289717d6abecea40857aa490d887a8e
Next block
0000009d01d81cfbfa9b534f8eacd11a38b0c299bc7dce157fe68998765a4249

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 18113 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
ba2cd84630f431e881803a85e1ac2750… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c87cdc4d4849…6bbb6bb224ff coinbase1250