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

Block 21146

Hash
0000000f3b8df54637482393405cd3b780a30ed7fad0881a50c4bf8d142ef077
Confirmations
18977
Time
2026-10-12 12:22:22 UTC
Median time
2026-10-12 12:13:58 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f4e64c07452fb248c6e5564041c63512b7f5d781224bbb451d570a154ee850d7
Previous block
0000007f24001ec19afe4af1dcec675f8e95bbaade6f3e6bcd4ec20252d49193
Next block
000000c85598db4b1b7ce13e5aff85411560c504d9613c6a4fe369828e0f2c48

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 21146 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
49c4430a39bfc84bdc6f27314b8e4177… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f4e64c07452f…0a154ee850d7 coinbase1250