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

Block 21251

Hash
0000012ba60b5a9bf7e3d1604ab6ac2a24777bd52382f52ac54c626b2df013fd
Confirmations
19716
Time
2026-10-12 15:18:35 UTC
Median time
2026-10-12 15:10:05 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
515a627ebafc7938bcc6967f739e7438956bf1454a1ff1613de880d70d389999
Previous block
000000620a83823b2532be1bdd848346aeaba132c8ab60f78825d0d926f06d73
Next block
0000011ebe2399c25d3ed0423e650899b48e7d7067c514dab45e53000522441c

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 21251 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
33b13954a3db217a33e554a3f4160ef0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d5db70bdda4c…1696eb941622 coinbase1250.0000031
d11f40b10372…d92526984264 pays to P2MR128.99986960.0000031