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

Block 19809

Hash
0000003f8da2a7bde26bce7abed7684e74ee2d9108ae1251886d3f3e397816ab
Confirmations
21787
Time
2026-10-10 23:23:51 UTC
Median time
2026-10-10 23:15:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f166a46233712cfa19b21641960f63a6d2ec0ccd91a0bdb4170244079b5d39a1
Previous block
00000052763f5f24935bc3eebb3780943b7718afe53f7f07fc85e02d30dd5701
Next block
000000a2e37798d27e3a3e1be147ba00af6cfea830a7363b9521f0f65b2cb3e1

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 19809 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
bbaf38fb3321118130725ba13ca86fd5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f166a4623371…44079b5d39a1 coinbase1250