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

Block 21542

Hash
0000007954c16467256190675322c6e4566d022781091f51cc23750b7cb88955
Confirmations
19411
Time
2026-10-12 23:27:20 UTC
Median time
2026-10-12 23:19:30 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
31702a081473b06a5db72bfa38292574acdbf9eab7116effe304c01c2a4f8279
Previous block
000000c57cbf930106d83aef2efde20fce64fc03d26f51a867c157325bcdb3fa
Next block
0000013daf315a1ca7ca9afcb07e205b3655cdacca5d6e7b5daace075c5f3a99

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 21542 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
45a8681751abe0430bbcbf8587789b51… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
31702a081473…c01c2a4f8279 coinbase1250