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

Block 21140

Hash
00000047355abb5c31ddd146a7ecb9304c7e647d77f9cc75982ad8164eb965f5
Confirmations
19180
Time
2026-10-12 12:12:27 UTC
Median time
2026-10-12 12:03:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
71cb0863f15954cf36d8c541000b5f665ffb6b17940068658b724b89bf563a93
Previous block
000000ee3c436d1a6565958161a6228f43f19736593ab5910c3e7bd82e821f18
Next block
0000005f56e6f05686a1c2c3452a00ecfbc7e05278b88e882cd9f6986ba8aa58

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 21140 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
eabf278616e5dff19dcb7d79812a26e3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
71cb0863f159…4b89bf563a93 coinbase1250