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

Block 21142

Hash
000000f779602c75233962dbecf85f3e8d6cb8d5ff634103875fe8959fe19950
Confirmations
19136
Time
2026-10-12 12:15:33 UTC
Median time
2026-10-12 12:07:28 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
218a8df7fb5de4a0e0e376f47ddad26e70ef3829544e9e3a0276a1f0245ab9a4
Previous block
0000005f56e6f05686a1c2c3452a00ecfbc7e05278b88e882cd9f6986ba8aa58
Next block
000000c9313305cb2d19be3fc63492958161a6801b3e12be51a4f914d6a9b2fc

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 21142 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
3e99359facb93a2757d0afb3db4c5352… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2f12464c9ac6…30b494e4be49 coinbase1250.0000031
26308d843ae1…fa0f58f61eb6 pays to P2MR1215.99989130.0000031