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

Block 19572

Hash
00000047c4338bc467e4c29bd83e2177269cf32d97578be56da94cfc4217267c
Confirmations
22190
Time
2026-10-10 16:43:51 UTC
Median time
2026-10-10 16:35:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4463ee259407b972f4749b81fdae372ea2a8f50f0ddabf65e38d91e8f9bbdda8
Previous block
0000007a085da06533c47e1002eecca4c7e070370620239a8c1e3f68b8a099d4
Next block
00000039a61c4b3cfac28d65ab7df03fd952db6205515f91fc59426b8fbf2112

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 19572 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
bca111cb246a1a29c509cc2ecf4d6814… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4463ee259407…91e8f9bbdda8 coinbase1250