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

Block 19258

Hash
00000037ff8b9131855975e494db9361e52ffa6758526c084d326eaaad94d590
Confirmations
22160
Time
2026-10-10 07:57:16 UTC
Median time
2026-10-10 07:48:58 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3310ff35f72b1090018373b06f3d2f1c2624d00a3f28fcc55407d8bef695e1f1
Previous block
000000732cbc306ffdf0af4148d6f46c9816b8596b06074b1c77aad684581cb5
Next block
00000087ae667c6d50123c4f47fe5cf019aaf763afe4a4904756d1c6b87c26d8

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 19258 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
b0b46204054a2198bf8871624a5a9571… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3310ff35f72b…d8bef695e1f1 coinbase1250