Datasets to power the Market Depth chart.
Both bids and asks are lists of 2-item tuples: [price, volume]

Additionally there are aggregate values provided for both sides of the book
and both quote and base currencies (in that order) under the totals key:

totals = [
[amount of quote currency in bids, amount of base currency in bids],
[amount of quote currency in asks, amount of base currency in asks],
]

A nice article explaining how the Depth Chart works:
https://hackernoon.com/depth-chart-and-its-significance-in-trading-bdbfbbd23d33

GET /api/public/market/ogc-btc/depth/
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Cache-Control: public, s-maxage=1
Content-Type: application/json
Vary: Accept

{
    "bids": [],
    "asks": [
        [
            "0.0054",
            "4.049126"
        ],
        [
            "0.0055",
            "14.234447"
        ],
        [
            "0.00555",
            "15.234447"
        ],
        [
            "0.0056",
            "16.234447"
        ],
        [
            "0.006896",
            "21.234447"
        ],
        [
            "0.006897",
            "26.234447"
        ],
        [
            "0.006898",
            "31.234447"
        ],
        [
            "0.0069",
            "31.334447"
        ],
        [
            "0.007",
            "41.334447"
        ],
        [
            "0.0079",
            "41.478483"
        ],
        [
            "0.008",
            "47.811983"
        ],
        [
            "0.00895",
            "52.811983"
        ],
        [
            "0.00896",
            "67.811983"
        ],
        [
            "0.00897",
            "72.811983"
        ],
        [
            "0.00898",
            "77.811983"
        ],
        [
            "0.009",
            "87.911983"
        ],
        [
            "0.009495",
            "92.911983"
        ],
        [
            "0.00968",
            "97.911983"
        ],
        [
            "0.00969",
            "102.911983"
        ],
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            "0.0097",
            "103.911983"
        ],
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            "0.00989",
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        ],
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            "0.0099",
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        ],
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            "0.00991",
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        ],
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            "0.00992",
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        ],
        [
            "0.00993",
            "124.211985"
        ],
        [
            "0.01",
            "126.201985"
        ],
        [
            "0.0105",
            "128.201985"
        ],
        [
            "0.011",
            "130.201985"
        ],
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            "0.012",
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        ],
        [
            "0.013",
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        ],
        [
            "0.0131",
            "133.201985"
        ],
        [
            "0.0133",
            "135.630556"
        ],
        [
            "0.0135",
            "136.630556"
        ],
        [
            "0.016",
            "137.630556"
        ],
        [
            "0.016264",
            "138.130556"
        ],
        [
            "0.016266",
            "138.630556"
        ],
        [
            "0.016268",
            "139.130556"
        ],
        [
            "0.016269",
            "140.130556"
        ],
        [
            "0.01627",
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        ],
        [
            "0.017",
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        ],
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        ],
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            "0.019968",
            "156.130556"
        ],
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            "0.019978",
            "157.130556"
        ],
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            "0.019989",
            "158.130556"
        ],
        [
            "0.02",
            "162.130556"
        ],
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            "0.0225",
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        ],
        [
            "0.024",
            "165.130556"
        ],
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            "0.024017",
            "166.130556"
        ],
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        ],
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        ],
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            "0.02656",
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        ],
        [
            "0.028",
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        ],
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        ],
        [
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        ],
        [
            "0.062",
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        ],
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            "0.0666",
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        ],
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    ],
    "totals": [
        [
            0,
            0
        ],
        [
            "44.95575486",
            "700.792717"
        ]
    ]
}