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

Block 19645

Hash
000000e3a5525434568d1d12234ad0fbdcbab272434ec5e7c1402ffde28a4cf7
Confirmations
22623
Time
2026-10-10 18:47:53 UTC
Median time
2026-10-10 18:39:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7cde37397f16085e5af5bcc5c2170b5c8e6e66b9f648469b296cf346d4ab1834
Previous block
000000d50a1139dfe598509d30ce3a96813e3be9d6e6c118d7d5cc84f92d4153
Next block
000000793a1eb315f7726ed8962553d972992e56dde16368873057044b035973

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 19645 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
0eed04109b6e5509c794214b53f9278e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7cde37397f16…f346d4ab1834 coinbase1250