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

Block 19237

Hash
0000001f58ada69ba46dc0dd1e87d31c7ab1530ad6df9bcd5d37ed5fc0c69ef1
Confirmations
22696
Time
2026-10-10 07:22:55 UTC
Median time
2026-10-10 07:14:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4ec58750104f8d660f475fcb5d0b4ebf0ab427c27641416fa2f1146e10a26bc4
Previous block
0000008fad6aa9d229397d5e4434fdddef7a24adb3662eefdfd6b0e5d43fbc3a
Next block
000000034c7689d61b159465571c4c2cfb914aeeb59c135ca95c68c9ddbfaf3a

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 19237 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
661ec8291404367dcfe0c05b13e2e91c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4ec58750104f…146e10a26bc4 coinbase1250