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

Block 21859

Hash
0000002d3e0df095b2936b90c71f8263505999656cb1a804d8146486a1c1c176
Confirmations
19398
Time
2026-10-13 08:17:45 UTC
Median time
2026-10-13 08:09:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2c2e7d675c03d7ca0342a6bc6b248ed1ba2c214f03d841f17204a52d2c2d7bd1
Previous block
000000fdcd9f033e81b17be82f7522cc292da3af80dcc044372f908eeba6b920
Next block
00000036d841b3fd26b28cf058fa9b3c978dcd766e63acc8b3d80b1cf0fc7284

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 21859 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
22eb2eeb4080143346a8dea05c533ab7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2c2e7d675c03…a52d2c2d7bd1 coinbase1250