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

Block 21301

Hash
000000d6c21026d091af7e3aa27321272a263f2693140aa1fd631c9754793973
Confirmations
19852
Time
2026-10-12 16:46:10 UTC
Median time
2026-10-12 16:38:03 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
10aa845af0639af9d063dfdebc20db1b83380847e61d5916288bfd1678b74ffa
Previous block
00000075c45f92627499d07f51ba682f520336efaf4fe1e30cdb8be6561c8972
Next block
00000124fbf169f32b29fe845f7dc1f57ab2c8634c5ee538ad9145ef7b6c414d

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 21301 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
68961bc4dec7b343fdd7a654c55e534a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
10aa845af063…fd1678b74ffa coinbase1250