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

Block 21994

Hash
0000005439a20b8cdd91f2fcf67828c64927da860b627c4d2b184f179d191163
Confirmations
18442
Time
2026-10-13 12:04:35 UTC
Median time
2026-10-13 11:56:12 UTC
Transactions
3
Size
7,156
Weight
16,309
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
a1bda5058c6278964c452a16fccc7f8718c2ab86253a0ad07bd4a8da0d3224e1
Previous block
000001151f62c43f554ab5696d7ac0b7cc7a5b6a56148744612a88b7ae67eec2
Next block
000000f12f3c061582c0eaa0db8cbeef3b2c0d3be54e2e8044c153b91d8ffbf0

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 21994 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
5ded1c0419842727adaa786d7f2ef981… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
30a347e94c4d…78cb45085d63 coinbase1250.00002666
c49f7505d752…e38a2517bf5f spends P2MR pays to P2MR120.999978260.00002174
2e584733da73…bb17ae873023 spends P2MR pays to P2MR221.999995080.00000492