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

Block 18506

Hash
0000009ef91925e04bd6b8a912b612ee0eefaac703e6b4ad28e3ed4532e4b704
Confirmations
21973
Time
2026-10-09 10:58:38 UTC
Median time
2026-10-09 10:50:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
019e5733547c7bdcb66c374c872a19054ab1414f56503968576a24b75c9c8a58
Previous block
0000010c2af60f9a71bc65b781a7621a2bdf2582ab9d8b76be0690318c1d8068
Next block
00000100f79e1c0d74cdde8f66ff846f5883f5984180a0e2f29eb6753135af7c

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 18506 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
65dd2ae0cd166ec3508659b40730f85a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
019e5733547c…24b75c9c8a58 coinbase1250