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

Block 19904

Hash
0000000dc837e0ae0044c3a20fff3d9ecc24ad0b32c53c8998db036ac0d27853
Confirmations
22247
Time
2026-10-11 01:58:17 UTC
Median time
2026-10-11 01:50:11 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
46c56af96203f3b1781bc7511b2e5cd89ad109cf5c88e9592962c3ca1c968ffd
Previous block
00000107c606a84bec7f0e664b12080195e60ae425265ecd5e49c8875d526feb
Next block
0000009c03669d092c616676a775339803f65d91b05a469bbe8384717c1bc45f

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 19904 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
57bb3b2ca1fa86ccb7ded96ff3845569… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
46c56af96203…c3ca1c968ffd coinbase1250