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

Block 19201

Hash
000000510e513d2c87d341165a7b6c2814129dcace401a7101fc0d59e902966b
Confirmations
22237
Time
2026-10-10 06:21:33 UTC
Median time
2026-10-10 06:13:25 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
93efb2a0eddcf3c7e1b4c914fbc7eb93b8baa66ab9f5b7bd80d529d8c648e5d2
Previous block
000000d69e34446d8868638c78db3cac3369fafdd374a7d578c178faa9be0ccb
Next block
00000029eb183f4ce80dc45b9190600080f70e608df1bcecf7ff1447c599cd71

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 19201 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
48c1c0c027f79b53f33e4a4f013909fc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
93efb2a0eddc…29d8c648e5d2 coinbase1250