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

Block 21243

Hash
00000007c8858785f3e2dd7b6946654dcc6d6ec3a95a95f0070ed303af9bd538
Confirmations
19903
Time
2026-10-12 15:05:16 UTC
Median time
2026-10-12 14:56:45 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
e0d2f722045da760a0078323a09ba791889e534ab9d2ad2cfbc596338306ce0f
Previous block
00000126618382a28881f68128b86770b7075b420e8a7bab2ceab4316e2e5097
Next block
000000431c62787534f329a026b00e42b3b0e3eef2657f5faefb69fa595e8367

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 21243 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
e59e6568d403e774657f44073381de8e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cd695c782b03…349586d9b81e coinbase1250.0000031
d34843e947f0…b8da9197b1cc pays to P2MR1210.99987580.0000031