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

Block 21441

Hash
000000678f9da292ea52acda64b509547ed647ed727c3dfb436e49f1e90035ff
Confirmations
20408
Time
2026-10-12 20:40:36 UTC
Median time
2026-10-12 20:32:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
b3edc84557a12a931148e0606362f33340ce28f816decc1ffd808f6795cee76d
Previous block
00000081c63cf84ed9cfbaecf053f05c9daf1831f27f6cb6d41d43f8c592797e
Next block
000000fb1324ca53a6d83527e30a615e50aa5cdd1feadc2aadf1adfaca8b2ed5

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 21441 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
e7bf31a2bba0ee15df06975ea083b521… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b3edc84557a1…8f6795cee76d coinbase1250