action nebl_testnet_get_block_index { label: "Returns block hash of block" description: "Returns the block hash of a block at a given block index" provider: nebl method: GET path: "/testnet/ins/block-index/{blockindex}" encoding: json input: { type: "object" properties: { blockindex: { type: "number" } } required: ["blockindex"] additionalProperties: false } output: { type: "object" properties: { blockHash: { type: "string" description: "Hash of the requested block" } } } }