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

Block 19571

Hash
0000007a085da06533c47e1002eecca4c7e070370620239a8c1e3f68b8a099d4
Confirmations
22278
Time
2026-10-10 16:41:49 UTC
Median time
2026-10-10 16:34:00 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b13935e2c81cf31ea8c7a9af93f8cbf046f047aa9281628f742e5561b448a2c4
Previous block
000000161988f9e361841cdae4d9247218a4addfafb3ec71d246a5164c1740a8
Next block
00000047c4338bc467e4c29bd83e2177269cf32d97578be56da94cfc4217267c

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 19571 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
7ddaf43ea14deac677060fa0f4f183cc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b13935e2c81c…5561b448a2c4 coinbase1250