{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:CIP2GYEFDAZUNJO75MYYIK5U6A","short_pith_number":"pith:CIP2GYEF","canonical_record":{"source":{"id":"2103.03884","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-03-05T19:00:01Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"90268c9ead80581da9e4405f0e5cf715acba44407266155647dfd6e71ed2dd5d","abstract_canon_sha256":"bf0e7ac7a17d141aa338ea952cb0cd79e1dd6498400c71e9aaf499043d9e92d2"},"schema_version":"1.0"},"canonical_sha256":"121fa36085183346a5dfeb31842bb4f0138a6d2ba5ab8a8b457a139f884ff993","source":{"kind":"arxiv","id":"2103.03884","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.03884","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"arxiv_version","alias_value":"2103.03884v1","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.03884","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"pith_short_12","alias_value":"CIP2GYEFDAZU","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"pith_short_16","alias_value":"CIP2GYEFDAZUNJO7","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"pith_short_8","alias_value":"CIP2GYEF","created_at":"2026-07-05T03:19:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:CIP2GYEFDAZUNJO75MYYIK5U6A","target":"record","payload":{"canonical_record":{"source":{"id":"2103.03884","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-03-05T19:00:01Z","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"title_canon_sha256":"90268c9ead80581da9e4405f0e5cf715acba44407266155647dfd6e71ed2dd5d","abstract_canon_sha256":"bf0e7ac7a17d141aa338ea952cb0cd79e1dd6498400c71e9aaf499043d9e92d2"},"schema_version":"1.0"},"canonical_sha256":"121fa36085183346a5dfeb31842bb4f0138a6d2ba5ab8a8b457a139f884ff993","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:19:06.217488Z","signature_b64":"v+J5cU9ZSwaMTR0/7KB5mgWS6lAQmjz5HrQZNbk2YSszQ6oPh0c3PYW9bd0qhEpHYgVMkNLtJqy62HP01V6/CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"121fa36085183346a5dfeb31842bb4f0138a6d2ba5ab8a8b457a139f884ff993","last_reissued_at":"2026-07-05T03:19:06.217023Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:19:06.217023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2103.03884","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:19:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"st1o/oaZnFxxmUoOdStjvzn7HPDPOxT2Y0UTs+l1XMrAcumEGj1I0n8jOFYsZZCn9fUVL7K1lLKknZtQPXhjBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T20:08:26.615179Z"},"content_sha256":"b4124281227f3372c5b471460b9c57d5c2df44285c0dabe7fc3f839c39ee26e7","schema_version":"1.0","event_id":"sha256:b4124281227f3372c5b471460b9c57d5c2df44285c0dabe7fc3f839c39ee26e7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:CIP2GYEFDAZUNJO75MYYIK5U6A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The challenge of simultaneously matching the observed diversity of chemical abundance patterns in cosmological hydrodynamical simulations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Andrea V. Macci\\`o, Aura Obreja, Christoph Pfrommer, Jan Rybizki, Matthias Steinmetz, Melissa Ness, Sven Buder, Tobias Buck","submitted_at":"2021-03-05T19:00:01Z","abstract_excerpt":"With the advent of large spectroscopic surveys the amount of high quality chemo-dynamical data in the Milky Way (MW) increased tremendously. Accurately and correctly capturing and explaining the detailed features in the high-quality observational data is notoriously difficult for state-of-the-art numerical models. In order to keep up with the quantity and quality of observational datasets, improved prescriptions for galactic chemical evolution need to be incorporated into the simulations. Here we present a new, flexible, time resolved chemical enrichment model for cosmological simulations. Our"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.03884","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2103.03884/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:19:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bNbhdXXSj9Wsaz5hu99iJNJMBbfSTewYGj71PHsxWvDrmGSxoKsI9UE3JdmlIRX0vApUMkbBEa1KyEnEV9+5Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T20:08:26.615716Z"},"content_sha256":"81bd7e095706f44ba0b8883a010231c020327496469961d3a8ebc54d2fe9517b","schema_version":"1.0","event_id":"sha256:81bd7e095706f44ba0b8883a010231c020327496469961d3a8ebc54d2fe9517b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CIP2GYEFDAZUNJO75MYYIK5U6A/bundle.json","state_url":"https://pith.science/pith/CIP2GYEFDAZUNJO75MYYIK5U6A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CIP2GYEFDAZUNJO75MYYIK5U6A/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-10T20:08:26Z","links":{"resolver":"https://pith.science/pith/CIP2GYEFDAZUNJO75MYYIK5U6A","bundle":"https://pith.science/pith/CIP2GYEFDAZUNJO75MYYIK5U6A/bundle.json","state":"https://pith.science/pith/CIP2GYEFDAZUNJO75MYYIK5U6A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CIP2GYEFDAZUNJO75MYYIK5U6A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:CIP2GYEFDAZUNJO75MYYIK5U6A","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"bf0e7ac7a17d141aa338ea952cb0cd79e1dd6498400c71e9aaf499043d9e92d2","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-03-05T19:00:01Z","title_canon_sha256":"90268c9ead80581da9e4405f0e5cf715acba44407266155647dfd6e71ed2dd5d"},"schema_version":"1.0","source":{"id":"2103.03884","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2103.03884","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"arxiv_version","alias_value":"2103.03884v1","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2103.03884","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"pith_short_12","alias_value":"CIP2GYEFDAZU","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"pith_short_16","alias_value":"CIP2GYEFDAZUNJO7","created_at":"2026-07-05T03:19:06Z"},{"alias_kind":"pith_short_8","alias_value":"CIP2GYEF","created_at":"2026-07-05T03:19:06Z"}],"graph_snapshots":[{"event_id":"sha256:81bd7e095706f44ba0b8883a010231c020327496469961d3a8ebc54d2fe9517b","target":"graph","created_at":"2026-07-05T03:19:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2103.03884/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"With the advent of large spectroscopic surveys the amount of high quality chemo-dynamical data in the Milky Way (MW) increased tremendously. Accurately and correctly capturing and explaining the detailed features in the high-quality observational data is notoriously difficult for state-of-the-art numerical models. In order to keep up with the quantity and quality of observational datasets, improved prescriptions for galactic chemical evolution need to be incorporated into the simulations. Here we present a new, flexible, time resolved chemical enrichment model for cosmological simulations. Our","authors_text":"Andrea V. Macci\\`o, Aura Obreja, Christoph Pfrommer, Jan Rybizki, Matthias Steinmetz, Melissa Ness, Sven Buder, Tobias Buck","cross_cats":["astro-ph.CO","astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-03-05T19:00:01Z","title":"The challenge of simultaneously matching the observed diversity of chemical abundance patterns in cosmological hydrodynamical simulations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2103.03884","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b4124281227f3372c5b471460b9c57d5c2df44285c0dabe7fc3f839c39ee26e7","target":"record","created_at":"2026-07-05T03:19:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"bf0e7ac7a17d141aa338ea952cb0cd79e1dd6498400c71e9aaf499043d9e92d2","cross_cats_sorted":["astro-ph.CO","astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2021-03-05T19:00:01Z","title_canon_sha256":"90268c9ead80581da9e4405f0e5cf715acba44407266155647dfd6e71ed2dd5d"},"schema_version":"1.0","source":{"id":"2103.03884","kind":"arxiv","version":1}},"canonical_sha256":"121fa36085183346a5dfeb31842bb4f0138a6d2ba5ab8a8b457a139f884ff993","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"121fa36085183346a5dfeb31842bb4f0138a6d2ba5ab8a8b457a139f884ff993","first_computed_at":"2026-07-05T03:19:06.217023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:19:06.217023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"v+J5cU9ZSwaMTR0/7KB5mgWS6lAQmjz5HrQZNbk2YSszQ6oPh0c3PYW9bd0qhEpHYgVMkNLtJqy62HP01V6/CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:19:06.217488Z","signed_message":"canonical_sha256_bytes"},"source_id":"2103.03884","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b4124281227f3372c5b471460b9c57d5c2df44285c0dabe7fc3f839c39ee26e7","sha256:81bd7e095706f44ba0b8883a010231c020327496469961d3a8ebc54d2fe9517b"],"state_sha256":"8ea75a3abac69b25b1bab80d717790ddd62f6fc4fae37b00afeaa6ed765f568e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"04xw0Lq5G4i6VK6Mdw3O7vK+/P6g0qAyej07L1xdvL1vQ5EWjbSH4Ae6/pUc0c4J3h48h8NBoh5huVfytf3oBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T20:08:26.621718Z","bundle_sha256":"930897dfa81a65d7f05f721bab58cc9f6e8fb29da154107515899f1bcec1f115"}}