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

Block 18748

Hash
00000079d2f8f8e5ca30b2c110cc9f99a2fd888dec04ff87374acc1d211f2b5b
Confirmations
23453
Time
2026-10-09 17:36:55 UTC
Median time
2026-10-09 17:29:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4194983abab1977edf980d449add60be78313b0d61660f6e3e88a7f4a6d5f94c
Previous block
000000150f8cb817e171d0438aaefbd0b5a27188b8cb8303aa5c8980c539d78c
Next block
000000ecddfb7246cad5e5e9dff268a22ea610793a75b886c3c5fa2e8d1aea5e

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 18748 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
0bfab3caa03d6151ae8e62159dc2f375… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4194983abab1…a7f4a6d5f94c coinbase1250