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

Block 18161

Hash
00000080000e9ef206b164e61b5f6493a7459161d770b498c4cb5ed1df3a9e3f
Confirmations
23277
Time
2026-10-09 01:20:00 UTC
Median time
2026-10-09 01:11:44 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6c99de136a39f0ba6c5c8f4df6083d41b42c71818d7a5d03fe9834ba3bd6b8f8
Previous block
000000f3bb90d303f528f8cd1ba17a392354999b736e38dbcb05dc91a7f4b256
Next block
00000113f19a8ab3977227dd174720fcaa634302f8fa9504c08984d103f8fa2c

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 18161 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
c184185f1f2c95b1fd6e21eeeb78486d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6c99de136a39…34ba3bd6b8f8 coinbase1250