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

Block 18757

Hash
0000006460e210a09c932c6449216ea07be27959f9d4f8993862f00c05588db6
Confirmations
23483
Time
2026-10-09 17:52:10 UTC
Median time
2026-10-09 17:43:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a724dd2ca64726e71bac0655f7376b7bc3ba3a50c688bcc9bd28fa55ef340a8d
Previous block
000000df2f000d73bbe8cd85b5f618ae2b07d8c5b2acfa29d540e55f7b79676a
Next block
00000119b973868fcdb5893d3a4275bb23ab497bcc0668c82468c449188ffb03

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 18757 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
327e4c0fc3533b5f6322e51228b2bdb1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a724dd2ca647…fa55ef340a8d coinbase1250