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

Block 19705

Hash
000000e2331b5cbaa58a0af78070d49175fc8bae6a30b76b415c3d54c872777d
Confirmations
21676
Time
2026-10-10 20:29:17 UTC
Median time
2026-10-10 20:21:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b1b4f0495b9894bb19f7c4953a55596155b05cf403a1dc23229905f05ab5cd5b
Previous block
0000006220923531e2ea2e5eff38921091d41b975f5539f4fe4c59a297bf675c
Next block
0000001661d4ff943e64bee0cd072f32b04bee47547a14dff0881dabd89f2829

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 19705 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
5217762b08429ce7dc6b0923fa40ad24… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b1b4f0495b98…05f05ab5cd5b coinbase1250