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

Block 22139

Hash
000000a7e024d2c43fb674008778104f2a9dc61cf063912c6d3b24088f85e2bb
Confirmations
18254
Time
2026-10-13 16:05:44 UTC
Median time
2026-10-13 15:57:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c8270c32c178ff7876ecd5d59dc13ed9088529d3d20c187fb45fa8df1028016b
Previous block
00000012de1eef8dbda3086b72ee10f466d9a7b0c179e3d9f4cd4c5290f4ea73
Next block
000000055a5dfa0773a55aba4910e53504e5c0733f8357c53f4d5d10dc5fe2b2

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 22139 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
a5619cc5ff8dc79a588f7cfab9a4c2b4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c8270c32c178…a8df1028016b coinbase1250