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

Block 19774

Hash
00000100dbc5bc1e421637850aa762d36ef17e6c8671a78c0603986ebee49878
Confirmations
21181
Time
2026-10-10 22:24:48 UTC
Median time
2026-10-10 22:16:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e47b894bb5453cd3528e3d50830945bf51d608f8b84c9e5d7b1cfa86d62b6d22
Previous block
0000003e8e0ed622fb5293bdecbf6d3d671523884fa2bb582b1e2ff5490f235d
Next block
000000583d478f34f6c4eefbf3590fdc3bbbf314333dca306cd291fdd62813e0

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 19774 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
14e10fe74111ff3b55ec5e018496fc44… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e47b894bb545…fa86d62b6d22 coinbase1250