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

Block 19020

Hash
0000003b8e0936e29a1797d9733af6e5a39822157af452ce48ec4d717d39e918
Confirmations
22243
Time
2026-10-10 01:13:48 UTC
Median time
2026-10-10 01:05:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2aeab710bc70b493e349ec3c867817db5fdeb0a32e70abe8e88f40db399eb76d
Previous block
0000001a00367f48e42a0bf3dbd9c549401fbd86f4f0c595a784f01cb7120c23
Next block
00000037ac70eed7d9550ef2e3c46b3bc83517b7bc1178317ecd95e0e52fd211

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 19020 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
cea2ad9e026fa703b4f32216054e1530… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2aeab710bc70…40db399eb76d coinbase1250