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

Block 18935

Hash
000000f7b34312696f9fa7553de4bcb8969fad8e4a5c35a45a3cc419ac509bab
Confirmations
22114
Time
2026-10-09 22:49:49 UTC
Median time
2026-10-09 22:41:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
eadd17b54667bdecba07842e6de0c42d44b73d91b04ee3b427c4d6292b186fd6
Previous block
0000001ab8cbcb26aeeaaf16d7b2697432171b269d236b89502803748257ce1a
Next block
000000593ab4db13fed89c061cce2852010a9eb878857489f678d0a2c9badc20

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 18935 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
25376a1d57d7e4492f1c19455eab2ebc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
eadd17b54667…d6292b186fd6 coinbase1250