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

Block 21250

Hash
000000620a83823b2532be1bdd848346aeaba132c8ab60f78825d0d926f06d73
Confirmations
19780
Time
2026-10-12 15:16:52 UTC
Median time
2026-10-12 15:08:32 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
4bf6b5ffcaf93412a7d7bd4cbcd774bae7161ecd682656cb34372f5b4d0e7614
Previous block
0000000d62c8464d726a8913ded15430c9dc20f7ebff901e108739c16b0b6eef
Next block
0000012ba60b5a9bf7e3d1604ab6ac2a24777bd52382f52ac54c626b2df013fd

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 21250 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
927acee4aeac9de96dc6c936be73236d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0caabcbf3cee…e2a558580319 coinbase1250.0000031
c17f86a17829…804fe6d64609 pays to P2MR129.99987270.0000031