## Testing Endpoints

Endpoint1 (ik1)
http://127.0.0.1:8080/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=1341083

Result1
https://kusama.subscan.io/event?block_end=1400000&block_start=1300000&event_id=reward&module=staking&page=11&spec_version=1058&time_dimension=block

Endpoint2 (ik2)
http://127.0.0.1:8080/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=27575

Result2
`-`

Endpoint3
http://127.0.0.1:8080/accounts/DSELWxqt4g3THNfg7TAHhU69eQJo8N2kBbAMuaF636eZCX2/staking-payouts?unclaimedOnly=false&at=1057267 for a nominator

Result3
`-`

Endpoint4
http://127.0.0.1:8080/accounts/EicrAEbyauqktQpp4CdvsF2CQy3Ju7tGGMohj3h5sAPnKHL/staking-payouts?unclaimedOnly=false&at=1057267 for a validator

Result4
`-`

Endpoint5
http://127.0.0.1:8080/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=29677

Result5
https://polkadot.js.org/apps/#/explorer/query/29099

Endpoint6
http://127.0.0.1:8080/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=2307545&depth=21 validator for era = 0.

Result6
`-`

Endpoint7
http://127.0.0.1:8080/accounts/H4635Bjj3X7TjnQhd55p9DyFPK39JiRypmCnsDhS3NHSMS5/staking-payouts?unclaimedOnly=false&at=2307545&depth=21 nominator for era = 0.

Result7
`-`

Endpoint8
http://127.0.0.1:8080/accounts/F4LocUbsPrcC8xVap4wiTgDakzn3xFyXneuYDHRaHxnb6dH/staking-payouts?unclaimedOnly=false&at=29677
* validator
* era 3

Result8
https://polkadot.js.org/apps/#/explorer/query/29099

Endpoint9
http://127.0.0.1:8080/accounts/EPehck28w8fjRZCqZ3VZA7XpwGeipuVU4ETSwv7GkF5BdcG/staking-payouts?unclaimedOnly=false&at=34130
* nominator
* era 12

Result9
https://polkadot.js.org/apps/#/explorer/query/34130

Endpoint10
http://127.0.0.1:8080/accounts/EPehck28w8fjRZCqZ3VZA7XpwGeipuVU4ETSwv7GkF5BdcG/staking-payouts?unclaimedOnly=false&at=1372997
* nominator
* era 516

Result10
https://polkadot.js.org/apps/#/explorer/query/1372997

Endpoint11
http://127.0.0.1:8080/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=1378036
* nominator
* era 517

Result11
https://polkadot.js.org/apps/#/explorer/query/1378036

## spec_versions - polkadot tags
[polkadot](https://github.com/paritytech/polkadot/blob/v0.9.42-rc5/runtime/kusama/src/lib.rs#L129)
- `spec_version: 9420`
- tag `v0.9.42-rc5`
- changed on `20230427`

[polkadot](https://github.com/paritytech/polkadot/blob/v0.8.23/runtime/kusama/src/lib.rs#L90)
- `spec_version: 2023`
- tag `v0.8.23`
- changed on `20200813`

[polkadot](https://github.com/paritytech/polkadot/blob/4b92656a1290df8e01f4759be23512ad126f0d66/runtime/kusama/src/lib.rs#L79)
- `spec_version: 1050`
- tag `v0.7.22`
- changed on `20200307`

[polkadot](https://github.com/paritytech/polkadot/blob/9268ae20f53bac162f80abb2b820321d7c7453dd/runtime/kusama/src/lib.rs#L81)
- `spec_version: 1034`
- tag `v0.7.11`
- changed `20200603`

## Migration
https://github.com/paritytech/substrate/blob/8c672e107789ed10973d937ba8cac245404377e2/frame/staking/src/migration/mod.rs#L56-L119

#### For `historyDepth`
`-`

#### For `erasValidatorRewards`
`-`

#### For `ErasRewardPoints`
`CurrentEraPointsEarned`

#### For `erasValidatorPrefs`
`let pref = <Module<T> as Store>::Validators::get(validator);`

#### For `erasStakersClipped`

let mut exposure_clipped = exposure;
let clipped_max_len = T::MaxNominatorRewardedPerValidator::get() as usize;
if exposure_clipped.others.len() > clipped_max_len {
    exposure_clipped.others.sort_unstable_by(|a, b| a.value.cmp(&b.value).reverse());
    exposure_clipped.others.truncate(clipped_max_len);
}

## Blocks - spec_versions - rewards

Block `2201991` - spec_version [1062](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=2201991)
- era : [759](https://kusama-public-sidecar.parity-chains.parity.io/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=2201991&depth=1)

`no other spec_versions in between`

Block `2199905` - spec_version [1058](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=2199905)
- until Block [2201990](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=2201990)

Block `1902826` - spec_version [1055](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=1902826)
- era: [671](https://kusama-public-sidecar.parity-chains.parity.io/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=1902826&depth=1)

Block `1739907` - spec_version [1055](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=1739907)
- era [624](https://kusama-public-sidecar.parity-chains.parity.io/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=1739907&depth=1)

Block `1530007` - spec_version [1054](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=1530007)
- era: [565](https://kusama-public-sidecar.parity-chains.parity.io/accounts/FXCgfz7AzQA1fNaUqubSgXxGh77sjWVVkypgueWLmAcwv79/staking-payouts?unclaimedOnly=false&at=1530007&depth=1)

Block `1463838` - spec_version [1051](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=1463838)
- era: 541
- sidecar [payouts](https://kusama-public-sidecar.parity-chains.parity.io/accounts/GTzRQPzkcuynHgkEHhsPBFpKdh4sAacVRsnd8vYfPpTMeEY/staking-payouts?unclaimedOnly=false&at=1463838&depth=1)

Block `1419128` - spec_version [1050](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=1419128)
- era: 529
- subscan [rewards](https://kusama.subscan.io/reward?address=Cs1jHXYHxZyWKsGPvYY1BknhLdpNa1iXGja4Kn8hQZs7BsH&category=Reward&role=account&page=48)
- sidecar [payouts](https://kusama-public-sidecar.parity-chains.parity.io/accounts/Cs1jHXYHxZyWKsGPvYY1BknhLdpNa1iXGja4Kn8hQZs7BsH/staking-payouts?unclaimedOnly=false&at=1419128&depth=20) (depth 20)
- `No ErasValidatorReward for the era 510`

Block `1130007` - spec_version [1045](https://kusama-public-sidecar.parity-chains.parity.io/runtime/spec?at=1130007)
- `apiAt.query.staking.activeEra is not a function`
- era