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

Block 19698

Hash
0000001d68a71c5b36136dc2aaa5a7dfd3d9472706db62513d7cc1813879bf61
Confirmations
22064
Time
2026-10-10 20:17:34 UTC
Median time
2026-10-10 20:08:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
d33fce6509b3f5cf2fd767a37168a06ad3c6ca2b2e6201bb162db3bbe564b20e
Previous block
00000021b2d6b5ce038da58702e84c1a682b16fc7d15e2104e6593207a1af331
Next block
0000005c85c2c5f7391b91410280f09c5602d6e7ba0e1a2f5cb97de103894de2

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 19698 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
d73e2b5c8ea80a881a43937472bb1c58… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
d33fce6509b3…b3bbe564b20e coinbase1250