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

Block 19297

Hash
000000a60a7f50913d78fb376da7411bb00eb5a533492fbfdc627bc2342ef52b
Confirmations
21158
Time
2026-10-10 09:02:01 UTC
Median time
2026-10-10 08:53:18 UTC
Transactions
3
Size
3,182
Weight
12,212
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3593f91f1f1a6c81c648f9ef6165fa4e58bf26984ce612081e4df923338e8cd5
Previous block
000000ad268cbd3265e62abb8d57d91d7d018ef3838b79b2504f7da19b1c2dde
Next block
000000654824a2f7c62daf5e1183342208e28675dbbbfbf1a367f193d13fcd6e

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 19297 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
b89e1e125af015f70d138b0d95f77934… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9bbfcbec7e03…77e3005b3914 coinbase1250.0000062
cc2b2a5f064f…bf7bbf97ef6b pays to P2MR1244.99998120.0000031
d47862b189c4…fe2082ff7ac6 pays to P2MR129.99987270.0000031