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

Block 18540

Hash
000000e8326910411b0a68b58c019731fbf5620c20667276b3062d4520f3e63b
Confirmations
22314
Time
2026-10-09 11:55:08 UTC
Median time
2026-10-09 11:46:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e955fa1c6faf214c97b647cf7e2ed16d42694ef10557b8148bd46ce168e3a75d
Previous block
0000008533173a4a0a484555238343a257c919c74aa2e8ff772a4e629470711c
Next block
0000005e5154274ab731fabcd4912196af8fa12787d126a3011ba463600558e6

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 18540 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
7a78df69307e19d87f1a40fd4ed7c875… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e955fa1c6faf…6ce168e3a75d coinbase1250