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

Block 19762

Hash
000000e3fcdbed1fb85010b3d2617747ef66fc0658dab0998928deedfb63a381
Confirmations
20618
Time
2026-10-10 22:04:54 UTC
Median time
2026-10-10 21:56:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
528c7327adb4aeb91b6b8fd05b31a9590fe9e46acc7a0581521ae3b1fd471fee
Previous block
000000561c1089f884f35691778d281c3826e522ec8deceb68e56c6b3b0fae72
Next block
00000093f2f2bc4931c11c3a000d9fb1d4a566c3446f3dc072371dcb83fba3ca

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 19762 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
395e3c459e6d2922006c8077ec21830a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
528c7327adb4…e3b1fd471fee coinbase1250