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

Block 21522

Hash
00000131e77e20b7c1beb5db10535bbb3199d1e7f9e4eb45a5bfd786e6edd14e
Confirmations
19730
Time
2026-10-12 22:54:23 UTC
Median time
2026-10-12 22:46:27 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0c905de6c4fad47aba0983ad1c22a2195b98f9758b7c13c8846dbcbb1e138c3a
Previous block
000000bad34105db3f328e1564f3d5382b8ba5c7a1cd70bc2545d1ed5485aa45
Next block
000000124891e8de41a494d28e7422b9eae473d590c753a0ba502d76b6371cd8

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 21522 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
2e82ef41f5e03bb678471250509b79ca… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
db4e001363c7…f41dde984c34 coinbase1250.0000031
ddf3a3cbb728…38826e0da572 pays to P2MR128.99986960.0000031