Finality

Seeing a transaction isn't the same as being able to rely on it. Until it's final, the block it's in can be replaced and the transaction can vanish. Crediting a deposit before finality is how platforms lose money.

Networks reach finality differently. Bitcoin's is probabilistic: each extra block makes reversal less likely, so you choose a depth. Tron marks blocks as solidified once more than two-thirds of its block producers have built on them. Ethereum-style networks are treated by depth as well. See confirmations.

On Valtu

Deposits carry a status:

• PENDING: seen, not yet final. Show "processing"; don't credit.
• CONFIRMED: final and still on the canonical chain. The only status to credit on.
• ORPHANED: dropped by a reorganization before it was final.
• NEEDS_REVIEW: dropped after it was confirmed, which means the depth was too shallow; the team looks into it.

On Tron, Valtu reads only solidified blocks, so a deposit is final when it's seen. Payouts are confirmed at the same depth, so CONFIRMED means the same in both directions. More in when is a deposit final?