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

Block 19629

Hash
000000e3bb92e1c15af6516031a9ef282dc17c8c4542adc70cbb4f70a1fb7f0f
Confirmations
22694
Time
2026-10-10 18:21:40 UTC
Median time
2026-10-10 18:11:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
cef5f38d6812316e81d1d1e55fb72657b6380e8e5d2ffedf722ba4b773794e16
Previous block
00000016895937549372f105400ab49522d51f8aca485bf25186336d2274d584
Next block
0000006d4e82413f51473abfe3346226571bc36ec675539fccbb4586c0e2fc6e

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 19629 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
9c61e28d38b291d901993b4a3cf6420a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cef5f38d6812…a4b773794e16 coinbase1250