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

Block 18038

Hash
0000000e3b5d1f5eec6c148a15897c47a632370cc0802d08114789c387d4a593
Confirmations
23172
Time
2026-10-08 21:51:56 UTC
Median time
2026-10-08 21:43:41 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
897240b64f6ccf67e010af9ba96277b863ff47f07447d49a207ccdb1b6f6e7ef
Previous block
000000806bf92847f13b3bb42af8d11dddef0a204f7ac558dc957b3e74b619bf
Next block
0000005408edc5a994456243d1ce5624ea1c29bdd929a5d18fb46b4be347377b

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 18038 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
d632fdf0c9830e4777425b363483338a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
897240b64f6c…cdb1b6f6e7ef coinbase1250