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

Block 21943

Hash
00000090b93abb2d2a67ab486ec4d3822e16941a0780494366aeaf91edb2e560
Confirmations
18781
Time
2026-10-13 10:40:00 UTC
Median time
2026-10-13 10:31:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
51b154c359398e0ec8611e0260ae0b60ab7f6a5ec1f7ac732eb4f28cff78c18b
Previous block
000000a97edd997a7026889e9223e4207fd4da675b73a0284c6c690308063a4f
Next block
00000089623a716d0f5d2169059e92154ee8a323195d62e6e3423044f1e86733

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 21943 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
2f2d34f50775ef0107d8136337eeaa8c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
51b154c35939…f28cff78c18b coinbase1250