Spark Opens USDT Savings Vault to OKX Users on X Layer

The striking detail is the mismatch between the distribution channel and the scale: OKX's user base is being pointed at a vault holding under $500, while Spark's own reviewers flag that X Layer can be upgraded by its operator without delay. That combination — exchange-grade reach, negligible liquidity, and a chain where the operator can change the rules unilaterally — is the substance here, not the yield. What matters next is whether deposits scale into a vault that can absorb them, and whether the upgrade caveat stays a footnote or becomes the story.