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

Block 37639

Hash
00000130a02e2a9c37c9b72753d62e07537d0452d766694ff1c5afb75aafc5c7
Confirmations
3444
Time
2026-10-31 03:52:50 UTC
Median time
2026-10-31 03:44:54 UTC
Transactions
1
Size
2,773
Weight
10,984
Difficulty
0.0016063508
Bits
1e026e85
Merkle root
3bbfb75d1a1e67c560ec7230c8ed80f379e7a53a71e9e8bf8e286651fbac7091
Previous block
00000022832dc45591ace444d2bf7c593b4aa061d8b94049641891927dc9c996
Next block
000001cdb2fa0d7ba12baa1b4ae1b3eadccbe432d87645b1f06478183e8d2c85

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 37639 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
acb40929cd10f911b301ebda36fd1dfb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3bbfb75d1a1e…6651fbac7091 coinbase1250