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

Block 18823

Hash
000000e22b7ba7094000aec2543e47f387854c67c6601ad168d9d1d538ee2929
Confirmations
23602
Time
2026-10-09 19:42:07 UTC
Median time
2026-10-09 19:33:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
adc5605050bf29060f5f006f9894b61a379a1f3f61e9702212351d965ab3e9b1
Previous block
0000001845272b23d9b2bef0ad20d6f02e567f5a73cbb9ff3b229ebfbad45d31
Next block
0000008601a64186148e2790f8fe7f570beaeccb6e1a5db82e3ab2bed4eded53

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 18823 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
4396f5a1c73782f53ec5c2885f471a7e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
adc5605050bf…1d965ab3e9b1 coinbase1250