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

Block 37638

Hash
00000022832dc45591ace444d2bf7c593b4aa061d8b94049641891927dc9c996
Confirmations
3500
Time
2026-10-31 03:51:19 UTC
Median time
2026-10-31 03:43:23 UTC
Transactions
1
Size
2,773
Weight
10,984
Difficulty
0.0016063508
Bits
1e026e85
Merkle root
76409c654a64e3138631b77cd2883fce8142de4c09622302f372032cc2ee4348
Previous block
00000257c1b2f6c4fec44de0253abac337d14914d671ba95c53eb8acbf1647a0
Next block
00000130a02e2a9c37c9b72753d62e07537d0452d766694ff1c5afb75aafc5c7

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 37638 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
782c6f83ba9caf0000fb5237e8747609… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
76409c654a64…032cc2ee4348 coinbase1250