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

Block 18511

Hash
000000bfa3c71454ff88941cda5a6dc88b32f5e259e6befdc6b5b8596d4d6a77
Confirmations
22554
Time
2026-10-09 11:06:51 UTC
Median time
2026-10-09 10:58:38 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
39708125e787cf3a40d039367da1ebc2420f964a7637d1655a68bf5b89a43961
Previous block
0000005055c2c1e201fcaff63287e23b0f3a2634fdecc13aba7b8327f74f25a6
Next block
00000018985cde52fe312ddfe2f4f89ea8ddce5c16b411826f26abfd88ed9292

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 18511 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
2afdfad42a0425f24cceff246d77a093… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
39708125e787…bf5b89a43961 coinbase1250