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

Block 21694

Hash
0000005413b62ab150905515d464105d2d72774ee26f918da2c0c8bc49e0c452
Confirmations
19404
Time
2026-10-13 03:43:59 UTC
Median time
2026-10-13 03:35:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
325c4abaf3b2bbe217c8a5792252439725d1a92de675d37c9c17ab885d17e4e2
Previous block
0000009b88c086e7f6ad757b23b1e2487e0bd3c3d45046f865232f01063fcaac
Next block
0000005e3b8175e7fb0461d11a26a64017f357c97e7a0bf4731d8296484fb958

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 21694 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
977a4654cc497c7cb0e7cd7821e9eabe… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
325c4abaf3b2…ab885d17e4e2 coinbase1250