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

Block 21390

Hash
00000049603f39a444a25dfabf17f306788270126a5b2f5eb20b8d9db606248d
Confirmations
20669
Time
2026-10-12 19:14:39 UTC
Median time
2026-10-12 19:06:30 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f9183e23a1cffa550c4adb392a6bc694cc0cdbf74edd087e42b903a2622aa048
Previous block
00000052675936545769b0ec89149549f6c86cf7a5216d740b86e8a170911f96
Next block
0000000b63f004cad0e16a85e862c1b98f41893b4a93cd5e2a73660ebe681a2e

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 21390 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
e3e37a3b2f072ae1fa06632a26e933c8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
597b2438072a…ae3760f73d36 coinbase1250.0000031
e4c362ea91b4…fbdf28ac9e5f pays to P2MR1240.99996880.0000031