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

Block 18803

Hash
0000004c6a42116f599afdffb87fe8ac856065b1b31673326d485e3ec8e082f8
Confirmations
23613
Time
2026-10-09 19:08:57 UTC
Median time
2026-10-09 19:00:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f2ba300634090797c7282e46d18870ecfb218b6d4910eaa4a68b984ff7eb2cec
Previous block
0000002e82f1621697366c19b2f290d74116f71c40a7a4cf5e6b20893fe07b94
Next block
00000012c623b916bdd9b823021968d6a6906a3f1f41107ce8cf1bd254692ae0

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 18803 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
aa2e20ea5928a796ce9afc0a4c773196… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f2ba30063409…984ff7eb2cec coinbase1250