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

Block 19754

Hash
00000040f623b86639c2c63da50547e883cfb1ed76b62de0e72b9789134fc6f8
Confirmations
21097
Time
2026-10-10 21:51:26 UTC
Median time
2026-10-10 21:43:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a6c6e1a927e88686004930322a2d4936dd5d1403473e053c8ed7b566288b21df
Previous block
00000095a326bba248778cbb03c4a546395f2cfe43521b8a90d09ace60dfc3c8
Next block
0000005a2b614c87e3e383c641ad4587c5c665b65689beb5d810b216e8f6b9b6

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 19754 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
38e21eccc167c0e248edf9ef73c1814e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a6c6e1a927e8…b566288b21df coinbase1250