# Point-in-Time Metrics

Point-in-Time (PIT) metrics provide a consistent, **immutable** view of data as it was known at a specific moment in the past. This is critical for building robust and reliable systematic strategies, research, and backtesting. Unlike traditional mutable metrics that may change retroactively, PIT metrics preserve historical data without applying any future knowledge or corrections that emerged later.

### Why Point-in-Time?

Many datasets evolve over time due to late-arriving information, retrospective corrections, or refined methodologies. If not handled carefully, this can introduce [*look-ahead bias*](https://newyork.qwafafew.org/wp-content/uploads/sites/4/2015/10/Luo_20150128.pdf), where a model or analysis unintentionally uses information that wasn't actually available at the time — leading to misleading results.

PIT metrics solve this by freezing data as it was *known at the time*, avoiding hindsight adjustments and ensuring results are reproducible and free from future information leaks.

> 📌 **Recommendation**: All systematic use cases (e.g., algorithmic trading, quantitative models, historical backtesting) **should always rely on PIT metrics** when using historical data.

### Common Reasons for Data Mutations

Even in a blockchain context, some data can change post-factum due to:

* **Clustering for Entity Adjustment**: As more heuristics or address linkages are discovered, historical metrics may be adjusted to reflect refined entity-level data (e.g., exchange wallets).
* **Late-Reported Data**: Off-chain or external data sources may deliver information with a delay (e.g. perpetual futures positions of a single exchange, or blockchain data that requires additional confirmations).
* **Data Corrections**: Improvements in off-chain datasets can lead to retroactive corrections.

PIT metrics eliminate the impact of such updates by recording and serving data exactly as it appeared at that time.

### Response format

PIT metric responses are the same as the regular variant, with one additional field per datapoint: `computed_at`. This field indicates at what time the datapoint was added into our system. We started tracking this data since 2024, the computed\_at field is omitted from earlier PIT datapoints.

Simple PIT timeseries metrics look like this:

```
[
  {
    "t": 1758585600,
    "v": 700017744,
    "computed_at": 1758685140
  },
...
```

Multi-timeseries PIT metrics look like this:

```
[
  {
    "t": 1758585600,
    "o": {
      "1d_1w": 67801800.87019362,
      "1m_3m": 61961089.16651055,
      "1w_1m": 7858184.390406752,
      "1y_2y": 212210.47253626725,
      "24h": 136026264.4282406,
      "2y_3y": 77661.69283392503,
      "3m_6m": 2498347.3922234857,
      "3y_5y": 145433.61576217506,
      "5y_7y": 0,
      "6m_12m": 1737574.3098036172,
      "7y_10y": 0,
      "aggregated": 278318566.33851117,
      "more_10y": 0
    },
    "computed_at": 1758684766
  },
...
```

Bulk PIT responses look like this:

```
{
  "data": [
    {
      "t": 1758585600,
      "bulk": [
        {
          "a": "SOL",
          "category": "7y_10y",
          "v": 0,
          "computed_at": 1758684987
        },
...
```

### Computed At

Since September 2024, we have been recording a `computed_at` timestamp for relevant data points. This field is included in API responses when available and omitted otherwise.

Please note that there is a delay between the `computed_at` timestamp and when the data becomes available (published) in our API. The table below summarizes the observed lag $$t$$ (time from computation to publication):

|                 | Lag $$t$$ |
| --------------- | --------- |
| Median          | 15 s      |
| 90th percentile | 1:07 min  |
| 95th percentile | 2:15 min  |
| 99th percentile | 9:42 min  |

### Metrics coverage

In July 2025 we started tracking PIT for all of our metrics, most of our PIT metrics therefore have limited historic data. Previously PIT was enabled for BTC and ETH and some select tokens only, and only for the following metrics:

```
/addresses/accumulation_balance_pit
/addresses/accumulation_count_pit
/addresses/receiving_from_exchanges_count_pit
/addresses/sending_to_exchanges_count_pit
/bridges/deposits_by_chain_pit
/bridges/net_volume_by_chain_pit
/bridges/total_value_locked_by_chain_pit
/bridges/total_value_locked_by_chain_relative_pit
/bridges/withdrawals_by_chain_pit
/distribution/balance_1pct_holders_pit
/distribution/balance_exchanges_all_pit
/distribution/balance_exchanges_pit
/distribution/balance_exchanges_relative_pit
/distribution/balance_german_government_pit
/distribution/balance_miners_all_pit
/distribution/balance_miners_change_pit
/distribution/balance_miners_sum_pit
/distribution/balance_mtgox_trustee_pit
/distribution/balance_otc_desks_pit
/distribution/balance_us_government_pit
/distribution/balance_wbtc_pit
/distribution/exchange_net_position_change_pit
/distribution/gini_pit
/distribution/herfindahl_pit
/distribution/supply_contracts_pit
/entities/active_count_pit
/entities/min_1k_count_pit
/entities/net_growth_count_pit
/entities/new_count_pit
/entities/profit_relative_pit
/entities/receiving_count_pit
/entities/sending_count_pit
/entities/supply_balance_0001_001_pit
/entities/supply_balance_001_01_pit
/entities/supply_balance_01_1_pit
/entities/supply_balance_100_1k_pit
/entities/supply_balance_10_100_pit
/entities/supply_balance_10k_100k_pit
/entities/supply_balance_1_10_pit
/entities/supply_balance_1k_10k_pit
/entities/supply_balance_less_0001_pit
/entities/supply_balance_more_100k_pit
/entities/supply_distribution_relative_pit
/eth2/deposited_by_provider_volume_sum_pit
/fees/exchanges_mean_pit
/fees/exchanges_relative_pit
/fees/exchanges_sum_pit
/fees/gas_used_sum_bridges_pit
/fees/gas_used_sum_bridges_relative_pit
/fees/gas_used_sum_defi_pit
/fees/gas_used_sum_defi_relative_pit
/fees/gas_used_sum_erc20_pit
/fees/gas_used_sum_erc20_relative_pit
/fees/gas_used_sum_nfts_pit
/fees/gas_used_sum_nfts_relative_pit
/fees/gas_used_sum_stablecoins_pit
/fees/gas_used_sum_stablecoins_relative_pit
/fees/gas_used_sum_vanilla_pit
/fees/gas_used_sum_vanilla_relative_pit
/fees/tx_types_breakdown_relative_pit
/fees/tx_types_breakdown_sum_pit
/indicators/accumulation_trend_score_pit
/indicators/asol_account_based_pit
/indicators/asol_lth_account_based_pit
/indicators/asol_sth_account_based_pit
/indicators/cdd90_account_based_age_adjusted_pit
/indicators/cdd_account_based_pit
/indicators/cdd_lth_account_based_pit
/indicators/cdd_sth_account_based_pit
/indicators/cyd_account_based_pit
/indicators/cyd_account_based_supply_adjusted_pit
/indicators/dormancy_account_based_pit
/indicators/dormancy_flow_pit
/indicators/dormancy_lth_account_based_pit
/indicators/dormancy_sth_account_based_pit
/indicators/liveliness_account_based_pit
/indicators/msol_account_based_pit
/indicators/mvrv_account_based_pit
/indicators/net_unrealized_profit_loss_account_based_pit
/indicators/nupl_less_155_account_based_pit
/indicators/nupl_more_155_account_based_pit
/indicators/nvt_entity_adjusted_pit
/indicators/rcap_account_based_pit
/indicators/realized_loss_account_based_pit
/indicators/realized_loss_lth_account_based_pit
/indicators/realized_loss_lth_to_exchanges_account_based_pit
/indicators/realized_loss_sth_account_based_pit
/indicators/realized_loss_sth_to_exchanges_account_based_pit
/indicators/realized_loss_to_exchanges_account_based_pit
/indicators/realized_profit_account_based_pit
/indicators/realized_profit_loss_lth_sth_relative_pit
/indicators/realized_profit_loss_lth_sth_to_exchanges_relative_pit
/indicators/realized_profit_lth_account_based_pit
/indicators/realized_profit_lth_to_exchanges_account_based_pit
/indicators/realized_profit_sth_account_based_pit
/indicators/realized_profit_sth_to_exchanges_account_based_pit
/indicators/realized_profit_to_exchanges_account_based_pit
/indicators/sopr_account_based_pit
/indicators/svab_entity_adjusted_pit
/indicators/svl_entity_adjusted_1d_1w_pit
/indicators/svl_entity_adjusted_1m_3m_pit
/indicators/svl_entity_adjusted_1w_1m_pit
/indicators/svl_entity_adjusted_1y_2y_pit
/indicators/svl_entity_adjusted_24h_pit
/indicators/svl_entity_adjusted_2y_3y_pit
/indicators/svl_entity_adjusted_3m_6m_pit
/indicators/svl_entity_adjusted_3y_5y_pit
/indicators/svl_entity_adjusted_5y_7y_pit
/indicators/svl_entity_adjusted_6m_12m_pit
/indicators/svl_entity_adjusted_7y_10y_pit
/indicators/svl_entity_adjusted_more_10y_pit
/indicators/unrealized_loss_account_based_pit
/indicators/unrealized_profit_account_based_pit
/indicators/urpd_entity_adjusted_pit
/mining/revenue_sum_pit
/mining/volume_mined_sum_pit
/supply/amer_1y_supply_change_pit
/supply/apac_1y_supply_change_pit
/supply/emea_1y_supply_change_pit
/supply/highly_liquid_sum_pit
/supply/illiquid_change_pit
/supply/illiquid_sum_pit
/supply/liquid_change_pit
/supply/liquid_illiquid_sum_pit
/supply/liquid_sum_pit
/supply/lth_loss_sum_pit
/supply/lth_net_change_pit
/supply/lth_profit_sum_pit
/supply/lth_sth_profit_loss_relative_pit
/supply/lth_sum_pit
/supply/sth_loss_sum_pit
/supply/sth_profit_loss_ratio_pit
/supply/sth_profit_sum_pit
/supply/sth_sum_pit
/transactions/entity_adjusted_count_pit
/transactions/transfers_between_exchanges_count_pit
/transactions/transfers_count_bridges_pit
/transactions/transfers_count_bridges_relative_pit
/transactions/transfers_count_defi_pit
/transactions/transfers_count_defi_relative_pit
/transactions/transfers_count_erc20_pit
/transactions/transfers_count_erc20_relative_pit
/transactions/transfers_count_nfts_pit
/transactions/transfers_count_nfts_relative_pit
/transactions/transfers_count_stablecoins_pit
/transactions/transfers_count_stablecoins_relative_pit
/transactions/transfers_count_vanilla_pit
/transactions/transfers_count_vanilla_relative_pit
/transactions/transfers_exchanges_to_whales_count_pit
/transactions/transfers_from_coinjoins_count_pit
/transactions/transfers_from_exchanges_count_pit
/transactions/transfers_from_miners_count_pit
/transactions/transfers_from_otc_desks_count_pit
/transactions/transfers_to_exchanges_count_pit
/transactions/transfers_to_miners_count_pit
/transactions/transfers_to_otc_desks_count_pit
/transactions/transfers_volume_between_exchanges_sum_pit
/transactions/transfers_volume_by_size_entity_adjusted_relative_pit
/transactions/transfers_volume_by_size_entity_adjusted_sum_pit
/transactions/transfers_volume_entity_adjusted_from_lth_loss_sum_pit
/transactions/transfers_volume_entity_adjusted_from_lth_profit_sum_pit
/transactions/transfers_volume_entity_adjusted_from_lth_sth_profit_loss_relative_pit
/transactions/transfers_volume_entity_adjusted_from_lth_sum_pit
/transactions/transfers_volume_entity_adjusted_from_sth_loss_sum_pit
/transactions/transfers_volume_entity_adjusted_from_sth_profit_sum_pit
/transactions/transfers_volume_entity_adjusted_from_sth_sum_pit
/transactions/transfers_volume_entity_adjusted_mean_pit
/transactions/transfers_volume_entity_adjusted_median_pit
/transactions/transfers_volume_entity_adjusted_sum_pit
/transactions/transfers_volume_exchanges_net_by_size_pit
/transactions/transfers_volume_exchanges_net_pit
/transactions/transfers_volume_exchanges_to_whales_sum_pit
/transactions/transfers_volume_from_coinjoins_sum_pit
/transactions/transfers_volume_from_exchanges_mean_pit
/transactions/transfers_volume_from_exchanges_sum_pit
/transactions/transfers_volume_from_miners_sum_pit
/transactions/transfers_volume_from_otc_desks_sum_pit
/transactions/transfers_volume_lth_sth_to_exchanges_profit_loss_relative_pit
/transactions/transfers_volume_lth_to_exchanges_loss_sum_pit
/transactions/transfers_volume_lth_to_exchanges_profit_sum_pit
/transactions/transfers_volume_lth_to_exchanges_sum_pit
/transactions/transfers_volume_miners_net_pit
/transactions/transfers_volume_miners_to_exchanges_all_pit
/transactions/transfers_volume_miners_to_exchanges_pit
/transactions/transfers_volume_sth_to_exchanges_loss_sum_pit
/transactions/transfers_volume_sth_to_exchanges_profit_sum_pit
/transactions/transfers_volume_sth_to_exchanges_sum_pit
/transactions/transfers_volume_to_exchanges_mean_pit
/transactions/transfers_volume_to_exchanges_sum_pit
/transactions/transfers_volume_to_miners_sum_pit
/transactions/transfers_volume_to_otc_desks_sum_pit
/transactions/transfers_volume_whales_to_exchanges_sum_pit
/transactions/transfers_volume_within_exchanges_sum_pit
/transactions/transfers_whales_to_exchanges_count_pit
/transactions/tx_types_breakdown_count_pit
/transactions/tx_types_breakdown_relative_pit
```

### Learn More

* [Full article on Point-in-Time metrics](https://insights.glassnode.com/introducing-point-in-time-data/)


---

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