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

Block 21875

Hash
0000010931060c45e28d40b8524c0a235c9d70040deb54cc64a3c9bb964c2cba
Confirmations
19960
Time
2026-10-13 08:44:19 UTC
Median time
2026-10-13 08:36:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
83e13a16c8e73415f8ec70dc287a9d4bf2df364f7dfb42b0b396795e55041b3b
Previous block
000000b0cd41a4f1c984ff5d2d538ce4104a306b4ac3002e523b68e05f33a53a
Next block
000000ab375ca70dea85c4df41f8aa18bac00b1d056455b00f87e2fcfeff6f2b

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 21875 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
585cb708cdf92b52ca404c2862529bd8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
83e13a16c8e7…795e55041b3b coinbase1250