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

Block 19821

Hash
000000be3dcbe40445176fb6b550e1b1f0225bffd48a763e3d819cb1cdea5b8c
Confirmations
22244
Time
2026-10-10 23:43:13 UTC
Median time
2026-10-10 23:35:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
63214f0acb73d452d6d78ffb23ace31f560dd8eb86c82d689371bf1d36bef9ff
Previous block
00000060b551c75451386a7593331b7c8a9afe8d23c494b92a6c1e6e31e3f619
Next block
000000be73fff3c03dec004dfa9912e9d212dfd908de64a8ca01da9cf506512d

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 19821 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
6aa245fcb2e9d7f47122b0c83475e282… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
63214f0acb73…bf1d36bef9ff coinbase1250