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

Block 18763

Hash
0000004dddc5e97bbbd01a1e30cd5a7dd217c7ee6aa21fa25190e9c0be390cfd
Confirmations
23495
Time
2026-10-09 18:02:18 UTC
Median time
2026-10-09 17:53:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
47bc3f75f9d0f61778e5d1b88bb8a2e4312fc93d8b18743d899e2cd042580a2b
Previous block
0000003826aa125c3058fe157fddb4d9722679eef0b850403ac648f488ff61d8
Next block
0000003e2d1484dbb6e1d8baeb4578e28b6b4cccd011826705030773240ff0f1

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 18763 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
78e194c97dbcbd8547c0f6f0004f755e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
47bc3f75f9d0…2cd042580a2b coinbase1250