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

Block 18306

Hash
00000081c1f0d9c786e1e2a2f649588222cf8b9fbbdf631cf5f4065f46f34883
Confirmations
23859
Time
2026-10-09 05:22:49 UTC
Median time
2026-10-09 05:14:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
24623c8e6621c04a6e6ccb304bb5aabc39b6590d5ed1ef0299fb332e327c35b8
Previous block
000000b477c920340095f60fae23beabe9df57e7a3b4e6315b8d3f04ff918300
Next block
000000d5007482dee178cb8d60aacab6089a15774669056459a432d4f3c1eb57

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 18306 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
4e8bb4726d1c382eaa29345a05602b88… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
24623c8e6621…332e327c35b8 coinbase1250