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

Block 19613

Hash
00000010b4a94d272af2152a2c99f00702e675c7bb05b190ed0dbeecafa3512e
Confirmations
22765
Time
2026-10-10 17:52:01 UTC
Median time
2026-10-10 17:43:54 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
507209b480616c7c66e348b9b64e786dbce12e6364f5817a9c65f35a19307f8f
Previous block
0000002313b3dd2c411d1324ca6b85982719c629c7dc8d73c802d6135c4ad0d8
Next block
000001112d772578e15a4476cb3904a7e4dae1660630f1665ace265837c3542d

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 19613 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
3dc538f80886ac8c883663cbd8fd9dfa… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
507209b48061…f35a19307f8f coinbase1250