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

Block 21188

Hash
0000013d120bae40dd79bdfd5837800228eb6f6021dfbf92d429dbb1f1067201
Confirmations
19708
Time
2026-10-12 13:33:13 UTC
Median time
2026-10-12 13:24:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
9827bac6c3d04b637b7dd724b819a2dd3f56d3c3d0115cb28b729b2d14e634d9
Previous block
000000f67795e514ee611d2b2cdbbdf913b070b99af715311fb5a055f2a6f192
Next block
000000c6b56d1499bdfde3717977bebff07af97d69f484a647de342fa19e7a25

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 21188 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
5a6958c419fc8de9528e7e8ff89c4830… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9827bac6c3d0…9b2d14e634d9 coinbase1250