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

Block 18849

Hash
00000118f4fe93b879a45054d660d3ee525b36bdf37a44e864278ac03e889670
Confirmations
23533
Time
2026-10-09 20:25:06 UTC
Median time
2026-10-09 20:17:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
34e29d8da432eab4337aa60598f0c3889847015577d096d1c65d01f8f01a5c8f
Previous block
0000005339a669dc5e97354586286f01a3ab907331b5bb3e25ed631b783f79ef
Next block
00000101b9bff8af644fc5ac9b0890fc64c312fd9651996e08f6092a3b1c6bfa

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 18849 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
7a40b062081f28a145207bc3cb59f37b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
34e29d8da432…01f8f01a5c8f coinbase1250