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

Block 19570

Hash
000000161988f9e361841cdae4d9247218a4addfafb3ec71d246a5164c1740a8
Confirmations
22081
Time
2026-10-10 16:40:18 UTC
Median time
2026-10-10 16:32:01 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
418610ab276666d188b80d76f7f485db14557077681779d48310c792abb8eed7
Previous block
0000011b4ead159f8dcccca6d24a3365c064b5bfa004ceee5bd6cb9e994c2cfa
Next block
0000007a085da06533c47e1002eecca4c7e070370620239a8c1e3f68b8a099d4

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 19570 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
b2e2f99a6a73655b43975dfc34261a54… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
418610ab2766…c792abb8eed7 coinbase1250