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

Block 21978

Hash
0000003e6953fe8b95447454367fcd0684de1c52567f9370b69496f719d222a5
Confirmations
19026
Time
2026-10-13 11:37:54 UTC
Median time
2026-10-13 11:30:00 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
1437faef2b55303abaa3d3f0262be8e6ede36ed244ae3b1993df40e5cd5e662b
Previous block
000000c46f9aef6abb987ebe33a9b58dfda5241ec86d44718ed857700ee3f590
Next block
00000064abaf58a4db3cad56c5627d9aeecb06c278b581b1113501c104c2649f

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 21978 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
e2bf6615ddc99456acf42323ebbb362d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1437faef2b55…40e5cd5e662b coinbase1250