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

Block 20640

Hash
00000005a63e2ed55173cc651af0da3c48a55fe7bfc50d52033b03b34bd3b594
Confirmations
20363
Time
2026-10-11 22:24:16 UTC
Median time
2026-10-11 22:16:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
b770b9cc18989adc93f1fd42a8ab62dfe213e1e6dc00559e1dd757f112517ad2
Previous block
00000070d712c1d2dd9a3ba8186a6a4b67df9d9fd16db21484dd4da10476abc7
Next block
0000013a5c726cbd6c301181ee4992745a6f69b6db3283382f095251e9cd0eac

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 20640 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
fad9ece8503473e340b9da9d4b8c4d19… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b770b9cc1898…57f112517ad2 coinbase1250