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

Block 19905

Hash
0000009c03669d092c616676a775339803f65d91b05a469bbe8384717c1bc45f
Confirmations
22257
Time
2026-10-11 01:59:50 UTC
Median time
2026-10-11 01:51:44 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
03307ad27625c1222a10aa84f183a3cdc4644aa0da82e7c3d2a5ce5b7fd1bf3f
Previous block
0000000dc837e0ae0044c3a20fff3d9ecc24ad0b32c53c8998db036ac0d27853
Next block
000000d7107de658e3edfabf4126511d2301ab5801b05541d3b559855c0ebd13

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 19905 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
bf9c6a19170cf6475e6d40c574ba619e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
03307ad27625…ce5b7fd1bf3f coinbase1250