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

Block 19780

Hash
0000001364dd81453aedcccdc2afe329c5d47a3dea5041d616da7077f9b3175c
Confirmations
21382
Time
2026-10-10 22:35:11 UTC
Median time
2026-10-10 22:26:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3f728daa576b16c0c5486e4e53a8c3416da48ac7e12939f9dae22efecc0a3499
Previous block
00000023d8525d841e690ff96e8183fd697f2f7c198c3ee95d1042097b792800
Next block
0000007b706c6a9073fc64b63cd753aff622164f3abba2ab45580e70df3f7056

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 19780 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
14c45cad50c2ea8ffd3aa9d3081b7bdc… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3f728daa576b…2efecc0a3499 coinbase1250