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

Block 21517

Hash
0000013413d2ed6d69f25dc5b4500b12eaf04af20312e72644adbb3c55fdb76b
Confirmations
20041
Time
2026-10-12 22:46:27 UTC
Median time
2026-10-12 22:38:12 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6e643437b2574cba6de77d667b25c7e7d177e129d71376820519e4c6c7e3759d
Previous block
00000087e85718c72165514a26c2a6b160ea7e218acf29778369acf5c636aef8
Next block
0000001bdf700dd21d757a697d84e3fd5b6a5c44697350bb0e51abaf9e1f66c8

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 21517 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
3c25b73b5eae081dae57d70a235b8623… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6e643437b257…e4c6c7e3759d coinbase1250