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

Block 20551

Hash
0000010825ba993b2fe1b74185960a4f02059adf698cd8c25370887c45032cd0
Confirmations
21882
Time
2026-10-11 19:59:01 UTC
Median time
2026-10-11 19:50:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
999fbcff7432d2a34727c68fef103feb2be40ccd464133b0024a740ca18dd218
Previous block
000000ac6b8f914e4c587765d3eb427c908e93932298a4ed62ea571cf774fdf9
Next block
0000011d049c8f723112bf2d716bdd4a62820d11f67a9baa07617c31cb1572c9

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 20551 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
2082c97e758bb3cab22f8b6cd258c574… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
999fbcff7432…740ca18dd218 coinbase1250