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

Block 21936

Hash
0000007caa6622d7d97ef04c285b0d770a8d45921ecbc2f7b5977f485d11d713
Confirmations
18446
Time
2026-10-13 10:28:04 UTC
Median time
2026-10-13 10:19:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
13db1822b2805e2fdaeb9af652498905f70b63abf7aee21234fe97227ef71360
Previous block
0000011556a1500abe5b2e4b9f99c4d940cbb0047cfda45c3fa708b4c7cb5236
Next block
0000007bcdc768ff224d17a263fa63d12cc199ebba9b8548eb45c94f42b857c3

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 21936 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
e9d5ec07dcf4f78ab03dfbf5bd9e66ab… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
13db1822b280…97227ef71360 coinbase1250