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

Block 21747

Hash
000000462224a78f44b10defdc913bfcbdc859dbbb516534d5675506e8292778
Confirmations
19914
Time
2026-10-13 05:12:39 UTC
Median time
2026-10-13 05:04:01 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
27b2ae3cc20a4e7fafe229bd69bd39cac18904c5462522b80b0bc4e45ccb9c71
Previous block
0000013b94d677fbb9ddcec2d8c1cb3ab09e1c5f13c3a82d3b62087f5a3fba60
Next block
000000ee4e7033b50f738b35a8bb9c5a7af78466cfe601b679d2caa918fd166d

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 21747 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
85e5bb6b8633d8fb998a6c65345e7a2b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
27b2ae3cc20a…c4e45ccb9c71 coinbase1250