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

Block 21658

Hash
000000ab1553b1aad3b6ed8c2293458eaf80a9da43a3b36b19c7c7cf83216761
Confirmations
20536
Time
2026-10-13 02:44:19 UTC
Median time
2026-10-13 02:35:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
24d2dce9fbdff487f9fcf790907c048350eafbcac6606dd770f4fb09d0b013b6
Previous block
000000d6fb5530df6016b49dc37407ea5b90231e82f955df782149eaa3c36ace
Next block
0000003cb8637509d104b11ac5837464d6aecc88bbd00d597642e5dc0e340cdb

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 21658 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
df76101a03492b34af848ce86d049fff… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
24d2dce9fbdf…fb09d0b013b6 coinbase1250