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

Block 18621

Hash
0000009f253ee19e6f1ba457760ec1b11398392865b9eb8d3da8e43292ac912e
Confirmations
22279
Time
2026-10-09 14:08:27 UTC
Median time
2026-10-09 14:00:03 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c79e30d153e19a9ae5699ee5f7b3248c6f3e21f1af5dfd1a2c1594cc1be7f655
Previous block
00000091c416fefbb01c0ff8599e703131118cf41399f3775e79b775b3407cef
Next block
0000003cc7a21bb05872cb6b500f14c56b5dfb2df1cfd04d16092694a777c2d6

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 18621 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
da768ff6515741cdea7d0ef51cb27a74… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c79e30d153e1…94cc1be7f655 coinbase1250