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

Block 21544

Hash
000001152266cca382e7ac93fe933b3bccbd45aa825f8aa1b1f30e29c2914b2c
Confirmations
19841
Time
2026-10-12 23:30:26 UTC
Median time
2026-10-12 23:22:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2679ff741f4fbd435d42e27b26214a1fd60c7df369d5147f41f3706a22d3bfa4
Previous block
0000013daf315a1ca7ca9afcb07e205b3655cdacca5d6e7b5daace075c5f3a99
Next block
0000007c1ba1a9f567dcee72f901e72d842fae510c9f7b2742cc996c8052d4ce

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 21544 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
6b4a0b3bb5d83d69e9e10651632adcf4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2679ff741f4f…706a22d3bfa4 coinbase1250