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

Block 18200

Hash
0000007770c6fd794814728c6e0211d630525a4b7e804c88f0f05f3f7b5cb323
Confirmations
23416
Time
2026-10-09 02:25:48 UTC
Median time
2026-10-09 02:16:28 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f4bccbfbb7d8e9c26a2ee845624e10d460ebeb35b779da720d039fca617e1ed9
Previous block
0000002ba3c3445861ce17fabfb9385852f873b04a9fd9c8e55872d3ed5cacca
Next block
00000016ca9141ce6a09a40cab1843e2d55a3937b637a657a0f1fd59406238ad

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 18200 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
3116e68bfa96692bcaebfc6bab7e9d98… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f4bccbfbb7d8…9fca617e1ed9 coinbase1250