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

Block 18281

Hash
00000049d4b41352c0a5501020887fbcdbf0bcd2f5f83579a2110e7e8d66dadb
Confirmations
23697
Time
2026-10-09 04:40:37 UTC
Median time
2026-10-09 04:32:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bea617dfc47ae17d7cf16bacd78aafe56aae1ed85a9461403f93b9b575089172
Previous block
0000008e6e8a190ab56f86aef9ef9b98d9af2845a25215f6dfae79f5d4fc5b7d
Next block
0000000b68506a9562a6e2ced90e1bfcefc5044fb3ab845f9f941714a5411e9d

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 18281 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
e9b4731890dbccfd47abec70ee6076b2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bea617dfc47a…b9b575089172 coinbase1250