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2020-06-07doc: release note for `db` log category removalJon Atack
2020-06-06Merge #18968: doc: noban precludes maxuploadtarget disconnectsMarcoFalke
fa9604c46f3245a704487c29b684caadffbf73bc doc: noban precludes maxuploadtarget disconnects (MarcoFalke) fa3999fe351b510bb141dff9ae4ecc8e717bf292 net: Reformat excessively long if condition into multiple lines (MarcoFalke) Pull request description: Whitelisting has been replaced by permission flags, so properly document this. See also #10131 ACKs for top commit: hebasto: ACK fa9604c46f3245a704487c29b684caadffbf73bc, I have reviewed the code and it looks OK, I agree it can be merged. ariard: ACK fa9604c Tree-SHA512: 5aee917ab9817719f01ec155487542118e17fa3d145ae7e4bc0e872b2cec39cde9e7fbdee2ae77e9a52700dd8bcc366de4224152e08e709d44d08e0d2f19c613
2020-06-05build: turn on --enable-c++17 by --enable-fuzzVasil Dimov
Fuzzing code uses C++17 specific code (e.g. std::optional), so it is not possible to compile with --enable-fuzz and without --enable-c++17. Thus, turn on --enable-c++17 whenever --enable-fuzz is used.
2020-06-04doc: noban precludes maxuploadtarget disconnectsMarcoFalke
2020-06-02doc: Move 0.21 fragments into the main release notesMarcoFalke
2020-06-02doc: Add release-notes-0.20.0.mdMarcoFalke
2020-06-02doc: Remove release notes of 0.20.1 releaseMarcoFalke
2020-06-02Merge #18982: wallet: Minimal fix to restore conflicted transaction ↵MarcoFalke
notifications 7eaf86d3bfc83f2beb3ef449707d5156853126fb trivial: Suggested cleanups to surrounding code (Russell Yanofsky) b604c5c8b5892842f13dee89ae31812a28ab25d1 wallet: Minimal fix to restore conflicted transaction notifications (Russell Yanofsky) Pull request description: This fix is a based on the fix by Antoine Riard (ariard) in https://github.com/bitcoin/bitcoin/pull/18600. Unlike that PR, which implements some new behavior, this just restores previous wallet notification and status behavior for transactions removed from the mempool because they conflict with transactions in a block. The behavior was accidentally changed in two `CWallet::BlockConnected` updates: a31be09bfd77eed497a8e251d31358e16e2f2eb1 and 7e89994133725125dddbfa8d45484e3b9ed51c6e from https://github.com/bitcoin/bitcoin/pull/16624, causing issue https://github.com/bitcoin/bitcoin/issues/18325. The change here could be improved and replaced with a more comprehensive cleanup, so it includes a detailed comment explaining future considerations. Fixes #18325 Co-authored-by: Antoine Riard (ariard) ACKs for top commit: jonatack: Re-ACK 7eaf86d3bfc83f ariard: ACK 7eaf86d, reviewed, built and ran tests. MarcoFalke: ACK 7eaf86d3bfc83f2beb3ef449707d5156853126fb 🍡 Tree-SHA512: 9a1efe975969bb522a9dd73c41064a9348887cb67883cd92c6571fd2df4321b9f4568363891abdaae14a3b9b168ef8142e95c373fc04677e46289b251fb84689
2020-05-30doc: Sync "how to upgrade" with 0.20.0 release notesMarcoFalke
2020-05-30doc: Add release notes for 17219MarcoFalke
2020-05-30Merge #18807: [doc / test / mempool] unbroadcast follow-upsMarcoFalke
9e1cb1adf1800efe429e348650931f2669b0d2c0 [trivial/doc] Fix comment type (Amiti Uttarwar) 8f30260a67166a6ab7c0f33f7ec1990d3c31761e [doc] Update unbroadcast description in RPC results (Amiti Uttarwar) 750456d6f29c63d57af05bfbdd6035bb9c965de2 [trivial] Remove misleading 'const' (Amiti Uttarwar) fa32e676e5833a5c5fc735ef00c0a80f5fab7a2c [test] Manage node connections better in mempool persist test (Amiti Uttarwar) 1f94bb0c744a103b633c1051e8fbc01e612097dc [doc] Provide rationale for randomization in scheduling. (Amiti Uttarwar) 9c8a55d9cb0ec73f10b196e79b637aa601c0a6b7 [mempool] Don't throw expected error message when upgrading (Amiti Uttarwar) ba5498318233ab81decbc585e9619d8ffe2df1b0 [test] Test that wallet transactions aren't rebroadcast before 12 hours (Amiti Uttarwar) 00d44a534b4e5ae249b8011360c6b0f7dc731581 [test] P2P connection behavior should meet expectations (Amiti Uttarwar) bd093ca15de762fdaf0937a0877d17b0c2bce16e [test] updates to unbroadcast test (Amiti Uttarwar) dab298d9ab5a5a41685f437db9081fa7b395fa73 [docs] add release notes (Amiti Uttarwar) Pull request description: This PR is a follow up to #18038 which introduced the idea of an unbroadcast set & focuses mostly on documentation updates and test fixes. One small functionality update to not throw an expected error in `LoadMempool` when you upgrade software versions. #18895 is another follow up to that addresses other functionality updates. Background context: The unbroadcast set is a mechanism for the mempool to track locally submitted transactions (via wallet or RPC). The node does a best-effort of delivering the transactions to the network via retries every 10-15 minutes until either a `GETDATA` is received or the transaction is removed from the mempool. ACKs for top commit: MarcoFalke: ACK 9e1cb1adf1 👁 gzhao408: ACK [`9e1cb1a`](https://github.com/bitcoin/bitcoin/pull/18807/commits/9e1cb1adf1800efe429e348650931f2669b0d2c0) Tree-SHA512: 0cd51c4ca368b9dce92d50d73ec6e9df278a259e609eef2858f24cb8595ad07acc3db781d9eb0c351715f18fca5a2b4526838981fdb34a522427e9dc868bdaa6
2020-05-27Merge #19061: doc: Add link to Visual Studio build readmefanquake
1c91ffefcf54d22f805c86318ea32d23b9d20c96 doc : add link to readme.md in the first section (pad) Pull request description: I have searched how to do it in this doc for some time :-( I think it might help other newbies interested in building with visual studio. ACKs for top commit: hebasto: ACK 1c91ffefcf54d22f805c86318ea32d23b9d20c96, a new link works as expected :) Tree-SHA512: 42ef3ba374bced9b4ab0010fe8c30de06f59ff8a84f8e02f8a91f33e7e403cf91d624fc7df3f45096df53171a90b9ff60277969cc30f1357d92094ad72ca9d53
2020-05-27doc : add link to readme.md in the first sectionpad
2020-05-27Merge #18918: wallet: Move salvagewallet into wallettoolSamuel Dobson
84ae0578b6c68dda145ca65fef510ce0fdac0d7b Add release notes about salvage changes (Andrew Chow) ea337f2d0318a860f695698cfb3aa91c03ded858 Move RecoverKeysOnlyFilter into RecoverDataBaseFile (Andrew Chow) 9ea2d258b46e8a9776100633585ed0feede5c2a4 Move RecoverDatabaseFile and RecoverKeysOnlyFilter into salvage.{cpp/h} (Andrew Chow) b426c7764d26e280e1f814cf36e050743c45cd12 Make BerkeleyBatch::Recover and WalletBatch::RecoverKeysOnlyFilter standalone (Andrew Chow) 2741774214168eb287c7066d6823afe5e570381d Expose a version of ReadKeyValue and use it in RecoverKeysOnlyFilter (Andrew Chow) ced95d0e43389fe62b5d30fcc7c42dbca0e88242 Move BerkeleyEnvironment::Salvage into BerkeleyBatch::Recover (Andrew Chow) 07250b8dcebe2b97ed0fd900ad35cba4091b8ecf walletdb: remove fAggressive from Salvage (Andrew Chow) 8ebcbc85c652665b78dcfd2ad55fa67cafd42c73 walletdb: don't automatically salvage when corruption is detected (Andrew Chow) d321046f4bb4887742699c586755a21f3a2edbe1 wallet: remove -salvagewallet (Andrew Chow) cdd955e580dff99f3fa440494ed2b348f7f094af Add basic test for bitcoin-wallet salvage (Andrew Chow) c87770915b88d195d264b58111c64142b1965cfa wallettool: Add a salvage command (Andrew Chow) Pull request description: Removes the `-salvagewallet` startup option and adds a `salvage` command to the `bitcoin-wallet` tool. As such, `-salvagewallet` is removed. Additionally, the automatic salvage that is done if the wallet file fails to load is removed. Lastly the salvage code entirely is moved out entirely into `bitcoin-wallet` from `walletdb.{cpp/h}` and `db.{cpp/h}`. ACKs for top commit: jonatack: ACK 84ae0578b6c68dda145ca65fef510ce0fdac0d7b feedback taken, and compared to my previous review, the bitcoin-wallet salvage command now seems to run and it exits without raising. The new test passes at both 9454105 and 84ae057 so as a sanity check I'd agree there is room for improvement, if possible. MarcoFalke: re-ACK 84ae0578b6 🏉 Empact: Code Review ACK https://github.com/bitcoin/bitcoin/pull/18918/commits/84ae0578b6c68dda145ca65fef510ce0fdac0d7b ryanofsky: Code review ACK 84ae0578b6c68dda145ca65fef510ce0fdac0d7b. Lot of small changes since previous review: added verify step before salvage, added basic test in new commit, removed unused scanstate variable and warnings parameter, tweaked various comments and strings, moved fsuccess variable declaration meshcollider: Concept / light code review ACK 84ae0578b6c68dda145ca65fef510ce0fdac0d7b Tree-SHA512: 05be116b56ecade1c58faca1728c8fe4b78f0a082dbc2544a3f7507dd155f1f4f39070bd1fe90053444384337bc48b97149df5c1010230d78f8ecc08e69d93af
2020-05-25[docs] add release notesAmiti Uttarwar
2020-05-25Add release notes about salvage changesAndrew Chow
2020-05-23doc: Drop protobuf stuffHennadii Stepanov
2020-05-22Merge #18787: wallet: descriptor wallet release notes and cleanupsSamuel Dobson
ca2a09640fe976b1e74a33d29d9381895e71b347 Change SetType to SetInternal and remove m_address_type (Andrew Chow) 89b1ce1140535b4c902a7c5999bed335b9ddfe7c Remove unimplemented SetCrypted from DescriptorScriptPubKeyMan (Andrew Chow) b9073c8f13fb0ba94c2ec6365666343e19fd9ddf rpc: createwallet warning that descriptor wallets are experimental (Andrew Chow) 610030d95c60ea526440d801a98ac8bd370eac48 docs: Add release notes for descriptor wallets (Andrew Chow) Pull request description: Some docs and cleanup following #16528. * Added release notes to explain a bit of motivation for descriptor wallets, what was changed, and how users will be effected by it. Also mentions the caveats regarding multsigs and watchonly that we have discussed on IRC. * Adds a warning to `createwallet` that descriptor wallets are experimental. * Removed unused `SetCrypted` as suggestioned: https://github.com/bitcoin/bitcoin/pull/16528#discussion_r415300916 * Removed `m_address_type` as mentioned in https://github.com/bitcoin/bitcoin/pull/18782#issuecomment-620167077 ACKs for top commit: Sjors: tACK ca2a09640fe976b1e74a33d29d9381895e71b347 instagibbs: utACK https://github.com/bitcoin/bitcoin/commit/ca2a09640fe976b1e74a33d29d9381895e71b347 meshcollider: utACK ca2a09640fe976b1e74a33d29d9381895e71b347 Tree-SHA512: 987188a912c191430e5d3f89bcef54ba6773692fc2d95b16a3ec11d9007ded210466ed980a3857e8b7196beef6422f07f9c85cc157f996c02d16f4dbde2e7b2a
2020-05-15wallet: Minimal fix to restore conflicted transaction notificationsRussell Yanofsky
This fix is a based on the fix by Antoine Riard <ariard@student.42.fr> in https://github.com/bitcoin/bitcoin/pull/18600. Unlike that PR, which implements some new behavior, this just restores previous wallet notification and status behavior for transactions removed from the mempool because they conflict with transactions in a block. The behavior was accidentally changed in two `CWallet::BlockConnected` updates: a31be09bfd77eed497a8e251d31358e16e2f2eb1 and 7e89994133725125dddbfa8d45484e3b9ed51c6e from https://github.com/bitcoin/bitcoin/pull/16624, causing issue https://github.com/bitcoin/bitcoin/issues/18325. The change here could be improved and replaced with a more comprehensive cleanup, so it includes a detailed comment explaining future considerations. Fixes #18325 Co-authored-by: Antoine Riard <ariard@student.42.fr>
2020-05-12build: multiprocess autotools changesRussell Yanofsky
autoconf and automake changes to support multiprocess gui/node/wallet execution. This adds a new --enable-multiprocess flag, and build configuration code to detect libraries needed for multiprocess support. The --enable-multiprocess flag builds new bitcoin-node and bitcoin-gui executables, which are updated in https://github.com/bitcoin/bitcoin/pull/10102 to communicate across processes. But for now they are functionally equivalent to existing bitcoind and bitcoin-qt executables.
2020-05-12Add a link from ZMQ doc to ZMQ example in contrib/Damian Mee
2020-05-11doc: add c++17-enable to fuzzing instructionsMartin Zumsande
2020-05-05docs: Add release notes for descriptor walletsAndrew Chow
2020-05-05doc: Do not translate technical or extremely rare errorsHennadii Stepanov
2020-04-28fix: update rest info on block size and jsonChris Abrams
2020-04-25Merge #18739: doc: Document how to fuzz Bitcoin Core using HonggfuzzMarcoFalke
bb1ec36fb171816309ae5af53d549ff3e4633f67 doc: Document how to fuzz Bitcoin Core using honggfuzz (practicalswift) Pull request description: Document how to fuzz Bitcoin Core using Honggfuzz. ACKs for top commit: fanquake: ACK bb1ec36fb171816309ae5af53d549ff3e4633f67 - did a couple quick runs on a severely under powered VM. Tree-SHA512: 117944c52763a5672f988c62fecb01b85f19f3827fad5582a51464aefdaac4d9a9cd81e2118199f6ea1bb3ab0893c8459ca3d1df7f67bfcf215d5e305225f210
2020-04-24Merge #18157: doc: fixing init.md documentation to not require rpcpasswordMarcoFalke
a2a03c3ca94b1cdd279ac09f2a81e04d262586fd fixing documentation to not require rpcpassword (“jkcd”) Pull request description: Configuration section in [doc/init.md](https://github.com/bitcoin/bitcoin/blob/master/doc/init.md) says user must set rpcpassword in order to run bitcoind. Since [71cbea](https://github.com/bitcoin/bitcoin/commit/71cbeaad9a929ba6a7b62d9b37a09b214ae00c1a) fixed the code to use a cookie for authentication, it is not mandatory to set rpcpassword in the configuration. Fixes #16346 ACKs for top commit: hebasto: ACK a2a03c3ca94b1cdd279ac09f2a81e04d262586fd, modulo nit Tree-SHA512: a62816fef78bed32200bb278cfc7aacf6ea154a60fdf5181927e48b806a1bd694bdf3ccec8362f5e58aad694d636c63f540323d54d85b61deaa417b95b8b56eb
2020-04-22doc: Document how to fuzz Bitcoin Core using honggfuzzpracticalswift
2020-04-22doc: Add wallet release notes for 0.21.0MarcoFalke
2020-04-22Add release notes skeleton, so that notes can be filled easierMarcoFalke
2020-04-17build: Set libevent minimum version to 2.0.21Hennadii Stepanov
2020-04-15Merge #18645: [doc] Update thread information in developer docsMarcoFalke
808ef36b89ea9ce72116bbd7ee479b984367dc60 [doc] Update thread information in developer docs (John Newbery) Pull request description: - DumpAddresses thread was removed in #5964 - Shutdown thread was removed in #5679 - Add new threads (scheduler, RPC worker, indexer, tor control) - Small changes to documentation of other threads ACKs for top commit: MarcoFalke: ACK 808ef36b89 hebasto: ACK 808ef36b89ea9ce72116bbd7ee479b984367dc60. Tree-SHA512: 85b6ace7bcc4dee030c63461bef1ded1a9581d4fa249c59f6fcd5d33d89c4357a6b8b35888ce0960f276d397b5e38a21e6c5d4b7b79544827a28c950e097b36d
2020-04-15[doc] Update thread information in developer docsJohn Newbery
2020-04-14doc: Fix macos comments in release-notesMarcoFalke
2020-04-10Revert "Merge #16367: Multiprocess build support"MarcoFalke
This reverts the changes made in merge commit 1b307613604883daea4913a65da30ae073c9dc4d: This reverts commit b919efadff3d0393f4a8c3c1dc735f7ac5c665bb. This reverts commit d54f64c6c700be0604190f52c84fc5f1cdd9f02f. This reverts commit 787f40668dc15980c3d6de028d7950c08175d84a. This reverts commit d6306466626635e6fee44385e6a688c8dc118eb5. This reverts commit e6e44eedd56ecaf59f3fabf8e07ab7dee0ddb1b6.
2020-04-10Merge #16367: Multiprocess build supportMarcoFalke
b919efadff3d0393f4a8c3c1dc735f7ac5c665bb depends: Use default macos clang compiler (Russell Yanofsky) d54f64c6c700be0604190f52c84fc5f1cdd9f02f Add multiprocess travis configuration (Russell Yanofsky) 787f40668dc15980c3d6de028d7950c08175d84a Set LD_LIBRARY_PATH consistently in travis tests (Russell Yanofsky) d6306466626635e6fee44385e6a688c8dc118eb5 libmultiprocess depends build (Russell Yanofsky) e6e44eedd56ecaf59f3fabf8e07ab7dee0ddb1b6 Multiprocess build changes (Russell Yanofsky) Pull request description: This PR is part of the [process separation project](https://github.com/bitcoin/bitcoin/projects/10). This splits autotools, depends build, and travis changes out of #10102, so code changes and build system changes can be reviewed separately. ACKs for top commit: hebasto: re-ACK b919efadff3d0393f4a8c3c1dc735f7ac5c665bb, rebased only since my [previous](https://github.com/bitcoin/bitcoin/pull/16367#issuecomment-605514556) review. Tree-SHA512: ebc5e403cc99a0d9629ed7fe1595e01d57e6d1255cbf03968a3196ff6f528f734c78060fdc065724ee1f923bcc5aa2b29470fcb36a7f15957eb57c76d58178a4
2020-04-10build: Bump version to 0.20.99Wladimir J. van der Laan
Now that 0.20 branch has been split off, master is 0.20.99 (pre-0.21). Also clean out release notes. Tree-SHA512: bba6133ae9708f75206c8934901b9f9909a233330f4dfefb3c24175bf8e11631cdc89a5d24a22421a73083f7eb743e977db8020b87dfbd3c1e6043929a19a285
2020-04-09Correct scripted-diff example linkYahia Chiheb
2020-04-06Merge #18514: test: remove rapidcheck integration and testsfanquake
9e071b00898aedd9632f105a22d976dc6dbc84b1 test: remove rapidcheck integration and tests (fanquake) Pull request description: Whilst the property tests are interesting, ultimately [rapidcheck](https://github.com/emil-e/rapidcheck) integration in this repository has not gained much traction. We have a limited number of tests, and they are rarely (if ever) run. Have discussed this with Chris Stewart. ACKs for top commit: practicalswift: ACK 9e071b00898aedd9632f105a22d976dc6dbc84b1 Tree-SHA512: d0c12af3163382eee8413da420c63e39265a7b700709a05d518445832d45e049aed9508e32524db5228fe3ac114609a00b7bb890be047c07032e44a5ef4611e9
2020-04-05Multiprocess build changesRussell Yanofsky
autotools and automake changes to support multiprocess execution. This adds a new --enable-multiprocess flag, and build configuration code to detect libraries needed for multiprocess support. The --enable-multiprocess flag builds new bitcoin-node and bitcoin-gui executables, which are updated in https://github.com/bitcoin/bitcoin/pull/10102 to communicate across processes. But for now they are functionally equivalent to existing bitcoind and bitcoin-qt executables.
2020-04-03test: remove rapidcheck integration and testsfanquake
2020-04-03[doc] fix git add argumentMichael Polzer
error: unknown switch `a' usage: git add [<options>] [--] <pathspec>... -n, --dry-run dry run -v, --verbose be verbose -i, --interactive interactive picking -p, --patch select hunks interactively -e, --edit edit current diff and apply -f, --force allow adding otherwise ignored files -u, --update update tracked files --renormalize renormalize EOL of tracked files (implies -u) -N, --intent-to-add record only the fact that the path will be added later -A, --all add changes from all tracked and untracked files --ignore-removal ignore paths removed in the working tree (same as --no-all) --refresh don't add, only refresh the index --ignore-errors just skip files which cannot be added because of errors --ignore-missing check if - even missing - files are ignored in dry run --chmod (+|-)x override the executable bit of the listed files
2020-04-03Merge #18505: doc: Update webchat URLs in README.mdfanquake
7b2975ae8f09851bc559378978e84a560a4e6211 doc: Update webchat URLs in README.md (Suriyaa Sundararuban) Pull request description: #### What happend? Web links in `doc/README.md` redirected from `http://webchat.freenode.net?channels=bitcoin` to `https://webchat.freenode.net/#bitcoin`. #### What did I changed? * Remove URL redirection. (Update all webchat links.) * Use HTTPS protocol instead of HTTP. ACKs for top commit: fanquake: ACK 7b2975ae8f09851bc559378978e84a560a4e6211 Tree-SHA512: e55970ad368ce6dbb79295d12629d0f16318e7c43d8d194876e16e81c6e325bb136c9e8b361d61c5a04e2f3624350f81c99131b1e85d9ee5410ac22f524a4ef2
2020-04-03Merge #18382: doc: note the costs of fetching all pull requestsfanquake
d695eb4c2164fc8777dc014e1a30c014cf04982a doc: note the costs of fetching all pull requests (Vasil Dimov) Pull request description: Also mention that it is possible to fetch just one pull request. ACKs for top commit: MarcoFalke: ACK d695eb4c2164fc8777dc014e1a30c014cf04982a fanquake: ACK d695eb4c2164fc8777dc014e1a30c014cf04982a Tree-SHA512: afe080fd018b2e773fb974956937e819085831bf0c1c5623f7f12c728639906b80666b785234058ee39fd98115a53a2fad431c54ee0840667e60bb317e4a828d
2020-04-02doc: Update webchat URLs in README.mdSuriyaa Sundararuban
2020-03-31doc: note the costs of fetching all pull requestsVasil Dimov
Also, update the example to skip downloading the merge commits when downloading all PRs.
2020-03-30doc: block-relay-only is not blocksonlyMarcoFalke
Co-Authored-By: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
2020-03-29Merge #18391: doc: Update init and reduce-traffic docs for -blocksonlyMarcoFalke
621e86ee8d0102e2bf41f7656a368083b89b2f83 Update -blocksonly documentation (glowang) Pull request description: When -blocksonly is set to 1, it interacts with the -walletbroadcast parameter and sets it to 0. This behavior is not captured by the current documentation, which claims that -blocksonly does not impact any wallet transactions at all. Fixes #17294 ACKs for top commit: MarcoFalke: ACK 621e86ee8d0102e2bf41f7656a368083b89b2f83 Tree-SHA512: f47bfb40a196c23e62505e1d4f79094011ac7c21fc9b920fad60cdadb5c4f48e993be1f015e26e568ce329967c24848fd7b665a6cffd3881f4cfcd2fd0081ed8
2020-03-29Update -blocksonly documentationglowang
When -blocksonly is set to 1, it interacts with the -walletbroadcast parameter and sets it to 0 if it has not been set already.This behavior is not captured by the current documentation, which claims that -blocksonly does not impact any wallet transactions. Update the max number of outgoing peers from 8 to 10, due to the addition of two -blocksonly peers.
2020-03-25Merge #18342: doc: Add fuzzing quickstart guides for libFuzzer and afl-fuzzfanquake
33dd764984def9371f324d3add19ee894a0260bf doc: Add fuzzing quickstart guides for libFuzzer and afl-fuzz. Simplify instructions. (practicalswift) Pull request description: Add fuzzing quickstart guide to make it trivial to start fuzzing Bitcoin Core. Fuzzing is fun and having more people contributing coverage-increasing inputs to https://github.com/bitcoin-core/qa-assets would be awesome :) ACKs for top commit: MarcoFalke: ACK 33dd764984def9371f324d3add19ee894a0260bf fanquake: ACK 33dd764984def9371f324d3add19ee894a0260bf - ran through the quick start and process message instructions. macOS users might see issues with afl-fuzz. Tree-SHA512: f3ca972ce6ed0df8bb8177bdbb1e16d8a235941ffe4fa7b95ce9520b6454694ee26d2c545eac0b8b81856a77e26befda0922a9121a445dd936a0e9f9dd034160