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

Block 21560

Hash
0000013417684d5f598390c6745af530766e76bf13c29cdd6f7daf1ef67a0b2f
Confirmations
19163
Time
2026-10-12 23:58:21 UTC
Median time
2026-10-12 23:49:43 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
a7c081dfc68b6b37e2a45580c79ff59901848d6d9a58694b26e219b950df0dad
Previous block
00000019f1e531292a1332de44be7bdbe63c0155c2f9a34c45a4f69ff1741be5
Next block
00000126df1eb67676444ab8a6197d29b1f2bca93d412653caef5b503b3c3115

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 21560 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
f7b49826351a79230028e03cea2d6bea… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4ab3ebf829dc…4547aa3fb0f4 coinbase1250.0000031
9446c06b4062…e3e2aa55f429 pays to P2MR1248.99999360.0000031