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(WIP) AuxPoW: Use cp_height for checkpoints #165

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(WIP) AuxPoW: Use cp_height for checkpoints #165

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Commits on Nov 5, 2019

  1. Use cp_height for checkpoints. 

    This is a rough port of abf12b6 by
rt121212121 from Electron-Cash.

Cherry-picked from c3399e0.
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  2. Add test for blockchain.get_chainwork 

    Cherry-picked from 4291828.
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  3. Add timestamp and chainwork to checkpoint

    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  4. Eliminate obsolete special case from request_chunk

    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  5. Test get_chainwork with a variety of checkpoint heights

    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  6. Add bits to checkpoint

    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  7. Refactor cp_height checkpoints' usage of header parsing 

    This makes it easier for Electrum forks to support alternate header
formats such as AuxPoW.

Cherry-picked from 2d2adb7.

Conflicts:
	electrum/blockchain.py
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  8. Add prev_hash to cp_height checkpoint logic

    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  9. Load cp_height checkpoints from JSON file instead of constants.py

    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  10. Use verifier.py's hash_merkle_root for checkpoints 

    Move hash_merkle_root to blockchain.py to avoid circular imports.
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  11. (WIP) Namecoin / AuxPoW: Adapt cp_height checkpoints for AuxPoW 

    TODO: Needs rebase once cp_height merged upstream.

Based on:

e69fbd8
98c4936
b34bfa6
a9b43ba
bca0ded
7db5c69
55b85d9
14ea0aa
16fe405
b997b13
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  12. (WIP) Namecoin / AuxPoW: Fix get_block_header parsing for cp_height 

    TODO: Needs rebase once cp_height merged upstream.
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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  13. (WIP) Namecoin / AuxPoW: Fix checkpoint exporting 

    TODO: Needs rebase once cp_height merged upstream.
    @JeremyRand
    JeremyRand committed Nov 5, 2019
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