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Update EIP-698: fix comment #8472

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Update EIP-698: fix comment #8472

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2 changes: 1 addition & 1 deletion EIPS/eip-698.md
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eip: 698
title: OPCODE 0x46 BLOCKREWARD
author: Cody Burns <[email protected]>

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4 | author: Cody Burns <[email protected]>
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discussions-to: https://github.com/ethereum/EIPs/issues/698

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5 | discussions-to: https://github.com/ethereum/EIPs/issues/698
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status: Stagnant
type: Standards Track
category: Core
created: 2017-08-28
---

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## Simple Summary

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12 | ## Simple Summary
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74 | ## Implementation
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77 | ## Further reading
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This EIP adds an additional opcode to the EVM which will return a finalized blocks reward value.

## Abstract

In the EVM, the 0x40 opcodes are reserved for `Block Information`. Currently reserved opcodes are:
* `0X40 BLOCKHASH`

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* `0X41 COINBASE`
* `0X42 TIMESTAMP`
* `0X43 NUMBER`
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## Motivation


Per EIP-649 ( #669 ) periodic block reward reductions/variance are now planned in the roadmap, however, this EIP is consensus system agnostic and is most useful in decentralized pool operations and for any contract that benefits from knowing a block reward payout(i.e. Merge mined tokens)

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31 | Per EIP-649 ( #669 ) periodic block reward reductions/variance are now planned in the roadmap, however, this EIP is consensus system agnostic and is most useful in decentralized pool operations and for any contract that benefits from knowing a block reward payout(i.e. Merge mined tokens) 
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## Specification

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* Value: `0x46`
* Mnemonic: `BLOCKREWARD`
* δ:` 0` nothing removed from stack

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* α:`1` block reward added to stack
* Description: `Get the block's reward emission`
* GasCost: `G<sub>base</sub>`
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### Contract Mining Pools

For distributed consensus systems(staking pools and mining pools) ad hoc groups combine resources in order to reduce variance in payouts. Broadly, pool operations function by allowing a collective of miners / stakers to verify their contribution to solving PoW or staking share by periodically submitting solutions which are is representative of the miners probability of finding a true block.
For distributed consensus systems(staking pools and mining pools) ad hoc groups combine resources in order to reduce variance in payouts. Broadly, pool operations function by allowing a collective of miners / stakers to verify their contribution to solving PoW or staking share by periodically submitting solutions which are representative of the miners probability of finding a true block.

In all these schemes `B` stands for a block reward minus pool fee and `p` is a probability of finding a block in a share attempt ( `p=1/D`, where `D` is current block difficulty).

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## Further reading

[Mining Pools](https://en.wikipedia.org/wiki/Mining_pool)

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79 | [Mining Pools](https://en.wikipedia.org/wiki/Mining_pool)
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The Yellow Paper Appendix H. Virtual Machine Specification section H.2

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