{"id":39103947,"url":"https://github.com/eigerco/zsf-simulator","last_synced_at":"2026-01-17T19:19:28.511Z","repository":{"id":199991177,"uuid":"704091876","full_name":"eigerco/zsf-simulator","owner":"eigerco","description":"Zcash Sustainability Fund simulator","archived":false,"fork":false,"pushed_at":"2024-08-12T07:06:36.000Z","size":122,"stargazers_count":0,"open_issues_count":0,"forks_count":2,"subscribers_count":4,"default_branch":"main","last_synced_at":"2025-03-30T05:32:35.276Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":"Rust","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/eigerco.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null}},"created_at":"2023-10-12T14:15:16.000Z","updated_at":"2024-08-12T07:06:40.000Z","dependencies_parsed_at":"2023-11-07T14:26:08.100Z","dependency_job_id":"992ab437-bd1b-44ec-9635-7317836f9f38","html_url":"https://github.com/eigerco/zsf-simulator","commit_stats":null,"previous_names":["eigerco/zsf-simulator"],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/eigerco/zsf-simulator","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eigerco%2Fzsf-simulator","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eigerco%2Fzsf-simulator/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eigerco%2Fzsf-simulator/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eigerco%2Fzsf-simulator/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/eigerco","download_url":"https://codeload.github.com/eigerco/zsf-simulator/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/eigerco%2Fzsf-simulator/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28516734,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-17T18:55:29.170Z","status":"ssl_error","status_checked_at":"2026-01-17T18:55:03.375Z","response_time":85,"last_error":"SSL_read: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2026-01-17T19:19:27.966Z","updated_at":"2026-01-17T19:19:28.489Z","avatar_url":"https://github.com/eigerco.png","language":"Rust","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Zcash Sustainaiblity Fund simulator\n\nThis short Rust program simulates Zcash Block Rewards (aka Block Subsidies) assuming Zcash Sustainability Fund backed smoothing out of the issuance curve will be implemented (https://github.com/zcash/zips/pull/706).\n\n## Running\n\n### Devenv\nYou can use [devenv.sh](https://devenv.sh/) to setup a development environment. Otherwise follow the instructions below.\n\n### Manual setup\n\nTo run the program, you need to have Rust installed. You'll also need some extra libraries to enable plotting, on Ubuntu do:\n\n```\nsudo apt install pkg-config libfreetype6-dev libfontconfig1-dev\n```\n\n Then, clone this repository and run:\n\n```\ncargo run\n```\n\n## Output\n\nThe program will output the final block that subsidies will be paid out from:\n\n```\nLast block is 47917869 in ~113.88 years\nFinal block subsidy: 1 (~0 ZEC)\nFinal ZSF balance: 0 (~0 ZEC)\n```\n\nAs well as a summary of subsidies paid out during 4 year periods in between halvings in comparison with the current\nissuance scheme:\n\n```\nHalvings:\nHalving 1 at block 1680000:\n ZSF subsidies: 262523884819889 (~ 2625238.848 ZEC, 1.563 ZEC per block)\n legacy subsidies: 262500000000000 (~ 2625000.000 ZEC, 1.562 ZEC per block)\n difference: 23884819889 (~ 238 ZEC), ZSF/legacy: 1.0001\nHalving 2 at block 3360000:\n ZSF subsidies: 131259082555273 (~ 1312590.826 ZEC, 0.781 ZEC per block)\n legacy subsidies: 131250000000000 (~ 1312500.000 ZEC, 0.781 ZEC per block)\n difference: 9082555273 (~ 90 ZEC), ZSF/legacy: 1.0001\nHalving 3 at block 5040000:\n ZSF subsidies: 65628165536456 (~ 656281.655 ZEC, 0.391 ZEC per block)\n legacy subsidies: 65625000000000 (~ 656250.000 ZEC, 0.391 ZEC per block)\n difference: 3165536456 (~ 31 ZEC), ZSF/legacy: 1.0000\nHalving 4 at block 6720000:\n ZSF subsidies: 32813394913130 (~ 328133.949 ZEC, 0.195 ZEC per block)\n legacy subsidies: 32812500000000 (~ 328125.000 ZEC, 0.195 ZEC per block)\n difference: 894913130 (~ 8 ZEC), ZSF/legacy: 1.0000\nHalving 5 at block 8400000:\n ZSF subsidies: 16406353535358 (~ 164063.535 ZEC, 0.098 ZEC per block)\n legacy subsidies: 16406250000000 (~ 164062.500 ZEC, 0.098 ZEC per block)\n difference: 103535358 (~ 1 ZEC), ZSF/legacy: 1.0000\nHalving 6 at block 10080000:\n ZSF subsidies: 8203004810267 (~ 82030.048 ZEC, 0.049 ZEC per block)\n legacy subsidies: 8203124160000 (~ 82031.242 ZEC, 0.049 ZEC per block)\n difference: -119349733 (~ -1 ZEC), ZSF/legacy: 1.0000\nHalving 7 at block 11760000:\n ZSF subsidies: 4101416429306 (~ 41014.164 ZEC, 0.024 ZEC per block)\n legacy subsidies: 4101562080000 (~ 41015.621 ZEC, 0.024 ZEC per block)\n difference: -145650694 (~ -1 ZEC), ZSF/legacy: 1.0000\nHalving 8 at block 13440000:\n ZSF subsidies: 2050665226986 (~ 20506.652 ZEC, 0.012 ZEC per block)\n legacy subsidies: 2050781040000 (~ 20507.810 ZEC, 0.012 ZEC per block)\n difference: -115813014 (~ -1 ZEC), ZSF/legacy: 0.9999\nHalving 9 at block 15120000:\n ZSF subsidies: 1025311119937 (~ 10253.111 ZEC, 0.006 ZEC per block)\n legacy subsidies: 1025389680000 (~ 10253.897 ZEC, 0.006 ZEC per block)\n difference: -78560063 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 10 at block 16800000:\n ZSF subsidies: 512644813724 (~ 5126.448 ZEC, 0.003 ZEC per block)\n legacy subsidies: 512694000000 (~ 5126.940 ZEC, 0.003 ZEC per block)\n difference: -49186276 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 11 at block 18480000:\n ZSF subsidies: 256317033772 (~ 2563.170 ZEC, 0.002 ZEC per block)\n legacy subsidies: 256346160000 (~ 2563.462 ZEC, 0.002 ZEC per block)\n difference: -29126228 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 12 at block 20160000:\n ZSF subsidies: 128155830300 (~ 1281.558 ZEC, 0.001 ZEC per block)\n legacy subsidies: 128172240000 (~ 1281.722 ZEC, 0.001 ZEC per block)\n difference: -16409700 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 13 at block 21840000:\n ZSF subsidies: 64076572065 (~ 640.766 ZEC, 0.000 ZEC per block)\n legacy subsidies: 64085280000 (~ 640.853 ZEC, 0.000 ZEC per block)\n difference: -8707935 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 14 at block 23520000:\n ZSF subsidies: 32037614417 (~ 320.376 ZEC, 0.000 ZEC per block)\n legacy subsidies: 32042640000 (~ 320.426 ZEC, 0.000 ZEC per block)\n difference: -5025583 (~ 0 ZEC), ZSF/legacy: 0.9998\nHalving 15 at block 25200000:\n ZSF subsidies: 16018471375 (~ 160.185 ZEC, 0.000 ZEC per block)\n legacy subsidies: 16020480000 (~ 160.205 ZEC, 0.000 ZEC per block)\n difference: -2008625 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 16 at block 26880000:\n ZSF subsidies: 8009067846 (~ 80.091 ZEC, 0.000 ZEC per block)\n legacy subsidies: 8010240000 (~ 80.102 ZEC, 0.000 ZEC per block)\n difference: -1172154 (~ 0 ZEC), ZSF/legacy: 0.9999\nHalving 17 at block 28560000:\n ZSF subsidies: 4004449844 (~ 40.044 ZEC, 0.000 ZEC per block)\n legacy subsidies: 4005120000 (~ 40.051 ZEC, 0.000 ZEC per block)\n difference: -670156 (~ 0 ZEC), ZSF/legacy: 0.9998\nHalving 18 at block 30240000:\n ZSF subsidies: 2002182886 (~ 20.022 ZEC, 0.000 ZEC per block)\n legacy subsidies: 2002560000 (~ 20.026 ZEC, 0.000 ZEC per block)\n difference: -377114 (~ 0 ZEC), ZSF/legacy: 0.9998\nHalving 19 at block 31920000:\n ZSF subsidies: 1001070275 (~ 10.011 ZEC, 0.000 ZEC per block)\n legacy subsidies: 1001280000 (~ 10.013 ZEC, 0.000 ZEC per block)\n difference: -209725 (~ 0 ZEC), ZSF/legacy: 0.9998\nHalving 20 at block 33600000:\n ZSF subsidies: 500525701 (~ 5.005 ZEC, 0.000 ZEC per block)\n legacy subsidies: 500640000 (~ 5.006 ZEC, 0.000 ZEC per block)\n difference: -114299 (~ 0 ZEC), ZSF/legacy: 0.9998\nHalving 21 at block 35280000:\n ZSF subsidies: 250255480 (~ 2.503 ZEC, 0.000 ZEC per block)\n legacy subsidies: 250320000 (~ 2.503 ZEC, 0.000 ZEC per block)\n difference: -64520 (~ 0 ZEC), ZSF/legacy: 0.9997\nHalving 22 at block 36960000:\n ZSF subsidies: 125126575 (~ 1.251 ZEC, 0.000 ZEC per block)\n legacy subsidies: 124320000 (~ 1.243 ZEC, 0.000 ZEC per block)\n difference: 806575 (~ 0 ZEC), ZSF/legacy: 1.0065\nHalving 23 at block 38640000:\n ZSF subsidies: 62556140 (~ 0.626 ZEC, 0.000 ZEC per block)\n legacy subsidies: 62160000 (~ 0.622 ZEC, 0.000 ZEC per block)\n difference: 396140 (~ 0 ZEC), ZSF/legacy: 1.0064\nHalving 24 at block 40320000:\n ZSF subsidies: 31271589 (~ 0.313 ZEC, 0.000 ZEC per block)\n legacy subsidies: 30240000 (~ 0.302 ZEC, 0.000 ZEC per block)\n difference: 1031589 (~ 0 ZEC), ZSF/legacy: 1.0341\nHalving 25 at block 42000000:\n ZSF subsidies: 15660304 (~ 0.157 ZEC, 0.000 ZEC per block)\n legacy subsidies: 15120000 (~ 0.151 ZEC, 0.000 ZEC per block)\n difference: 540304 (~ 0 ZEC), ZSF/legacy: 1.0357\nHalving 26 at block 43680000:\n ZSF subsidies: 7766952 (~ 0.078 ZEC, 0.000 ZEC per block)\n legacy subsidies: 6720000 (~ 0.067 ZEC, 0.000 ZEC per block)\n difference: 1046952 (~ 0 ZEC), ZSF/legacy: 1.1558\nHalving 27 at block 45360000:\n ZSF subsidies: 3962388 (~ 0.040 ZEC, 0.000 ZEC per block)\n legacy subsidies: 3360000 (~ 0.034 ZEC, 0.000 ZEC per block)\n difference: 602388 (~ 0 ZEC), ZSF/legacy: 1.1793\nHalving 28 at block 47040000:\n ZSF subsidies: 1814216 (~ 0.018 ZEC, 0.000 ZEC per block)\n legacy subsidies: 1680000 (~ 0.017 ZEC, 0.000 ZEC per block)\n difference: 134216 (~ 0 ZEC), ZSF/legacy: 1.0799\n```\n\nThe program will also output PNG files with plots of the issuance curve in `plots/`:\n\n![ZSF balance simulation](plots/zsf_balance.png)\n![ZSF block subsidy simulation](plots/zsf_block_subsidy.png)\n\n## About this repo\n\nThis simulator is part of our larger efforts to implement the Zcash Sustainability Fund, watch the presentation [here](https://www.youtube.com/watch?v=_QSYgvDV33k)\n\n## About [Eiger](https://www.eiger.co)\n\nWe are engineers. We contribute to various ecosystems by building low level implementations and core components. We believe in Zcash because privacy is critical to a well functioning society.\n\nContact us at hello@eiger.co\nFollow us on [X/Twitter](https://x.com/eiger_co)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feigerco%2Fzsf-simulator","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Feigerco%2Fzsf-simulator","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Feigerco%2Fzsf-simulator/lists"}