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

Block 19703

Hash
00000102aa085adf968265d55b8a5693a68687cacd610ae3bccb7499a50eee18
Confirmations
21855
Time
2026-10-10 20:26:14 UTC
Median time
2026-10-10 20:17:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e373e36009db0f0b9d6538b6155dd064a57b1c97da6ad74bf39fcc1e70bf7a64
Previous block
00000082bb22d0cbc9deb6a17239b2b4d65aa0881af22d0445d93d267c45c15b
Next block
0000006220923531e2ea2e5eff38921091d41b975f5539f4fe4c59a297bf675c

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 19703 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
45ec32088abb721dd1d5d91bcc8f1eb9… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e373e36009db…cc1e70bf7a64 coinbase1250