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

Block 19827

Hash
0000000eac01cb778bf6d3c2afbf80cc9cfa85073236622d27041b4d63f5933b
Confirmations
22278
Time
2026-10-10 23:52:42 UTC
Median time
2026-10-10 23:44:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b48ddb49ebeeb6303bb48a1d630914ecfe55f93e172de6aa2f8b6ee35e28a579
Previous block
0000010193dd4d61d1a7fea6f566c9d94bcd660cee6f423f4e944b1b3302b11f
Next block
000000362e0cb5b8988131093fdcb811faf2b35ad5552a75243d67a8c0e5766f

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 19827 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
2e56a08b625de9aee5a29384366c1bdf… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b48ddb49ebee…6ee35e28a579 coinbase1250