# zPieceCidString

> `const` **zPieceCidString**: `ZodCustom`\<`string`, `string`\>

Defined in: [packages/synapse-core/src/utils/schemas.ts:31](https://github.com/FilOzone/synapse-sdk/blob/30608dd46e68d704a96d7ed7c24717c948ec4e4b/packages/synapse-core/src/utils/schemas.ts#L31)