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

Block 20857

Hash
00000066380a949a04d174a27c76adf56ccf5cc3706a74c44b741805c05b7b4a
Confirmations
20486
Time
2026-10-12 04:23:20 UTC
Median time
2026-10-12 04:15:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
7c632f1ba6444e307254e2dcf88808d390a7b22e8f2e6ece5a95cbc90d1706b4
Previous block
000000b92a6702f730b597b8b8b8ded9308d86088867c247daa628e6f2b62e08
Next block
0000009623d02edc20c83fcd26f7c8d9a39c50dfdbfd5130700844285da7ea1f

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 20857 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
0c9172e7e025aef1f91c47e9506edda8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7c632f1ba644…cbc90d1706b4 coinbase1250