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

Block 18840

Hash
000001041e6f3efeacd30f973d777d568bd6c04a943e2d03d1efcb80058a4f99
Confirmations
23513
Time
2026-10-09 20:10:51 UTC
Median time
2026-10-09 20:02:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
474fa4dd5bf49c5015fdd38e8b12c47f000d4a2861680163ac7c5eb2c1023293
Previous block
0000002c627e6ef46eca92dd4fb7fb5168d2c243ef62d68c5d639078caf0adf7
Next block
0000009a8a2ec30871a7f58188088472c51ada18a37df758c6c8eba039bc59d9

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 18840 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
82d65cfc9000fc9c4528eb09d7ef49d1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
474fa4dd5bf4…5eb2c1023293 coinbase1250