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

Block 19770

Hash
000000f03e5245478c4fbb928f54db9fa6459a7b73970bd3c1f7fff1fdc1a3c9
Confirmations
21181
Time
2026-10-10 22:17:48 UTC
Median time
2026-10-10 22:09:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4fbbc5c5eb69b161c9ee0fc49d022e3a6530bcd02f313d179f155103902078d5
Previous block
00000008f869790a4407ae864e6a8138592b57d3d8cd75ed4e274702136a1c5e
Next block
000000a966e500e87af1e5eefddc62ed665c97f363679758e7a780c061805c94

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 19770 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
890743f5b690be63df429b1ddc44c20f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4fbbc5c5eb69…5103902078d5 coinbase1250