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

Block 645

Hash
0000008ef1084e709ea36139f2729c6963dd173ac8db2b5d80b387633d14b159
Confirmations
41117
Time
2026-09-15 18:55:25 UTC
Median time
2026-09-15 18:47:54 UTC
Transactions
1
Size
342
Weight
1,260
Difficulty
0.0011265153
Bits
1e0377ae
Merkle root
e1570a873996dc289bcd56816cf8d8bf3b21ff4418429ebb3353bf9a1a4e3815
Previous block
0000008e4f97d947a6c989d1c776b6ae324e778f54decc2ece3d1f2b700201cd
Next block
0000013f75f6d1b84fa6fa2d34f56c37cd524e90394b8a2e6772c174747d1851

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 645 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
No ML-DSA-44 block signature in this block

Transactions

txidInputsOutputsAmountFee
e1570a873996…bf9a1a4e3815 coinbase1250