{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SF3FJCAGLLTH2HCS44ISSRZTAW","short_pith_number":"pith:SF3FJCAG","canonical_record":{"source":{"id":"1508.04143","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-17T20:07:34Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"388ff08c2a9cf20999d0398fc0f7d4c96c245b3c17f4acfbe59082190a9f87d7","abstract_canon_sha256":"a10f36b07aa22b8114d7648af339e327c70515e05d8ea779363f2e0564bcad9f"},"schema_version":"1.0"},"canonical_sha256":"91765488065ae67d1c52e71129473305a50924ec6f0a6b8107c7e572931c6df0","source":{"kind":"arxiv","id":"1508.04143","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04143","created_at":"2026-05-18T01:15:36Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04143v3","created_at":"2026-05-18T01:15:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04143","created_at":"2026-05-18T01:15:36Z"},{"alias_kind":"pith_short_12","alias_value":"SF3FJCAGLLTH","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"SF3FJCAGLLTH2HCS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"SF3FJCAG","created_at":"2026-05-18T12:29:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SF3FJCAGLLTH2HCS44ISSRZTAW","target":"record","payload":{"canonical_record":{"source":{"id":"1508.04143","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-17T20:07:34Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"388ff08c2a9cf20999d0398fc0f7d4c96c245b3c17f4acfbe59082190a9f87d7","abstract_canon_sha256":"a10f36b07aa22b8114d7648af339e327c70515e05d8ea779363f2e0564bcad9f"},"schema_version":"1.0"},"canonical_sha256":"91765488065ae67d1c52e71129473305a50924ec6f0a6b8107c7e572931c6df0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:15:36.149054Z","signature_b64":"SQ1H3NKQz9zZnhyEIbsi89rwR7bdDv4AsJrKla6C83caWdDbf2xc9vWVXyjZzv4RB7nScL9yB6v3eDmsergHAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"91765488065ae67d1c52e71129473305a50924ec6f0a6b8107c7e572931c6df0","last_reissued_at":"2026-05-18T01:15:36.148049Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:15:36.148049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.04143","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:15:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yjitwuBiKqH3IMTUwxS3UvINcJj+9xu/7ljSInhsE/dBZBXfuYmBpw0bXaRmgL77+h6R4xE2KWhUNoaNb4ufCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T08:52:39.023900Z"},"content_sha256":"4e7f3adafef6d92327a779ff3ecd38a1dd42a002bafea56738337ebd30bdfc0b","schema_version":"1.0","event_id":"sha256:4e7f3adafef6d92327a779ff3ecd38a1dd42a002bafea56738337ebd30bdfc0b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SF3FJCAGLLTH2HCS44ISSRZTAW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dark matter cores all the way down","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"J. I. Read, M. L. M. Collins, O. Agertz","submitted_at":"2015-08-17T20:07:34Z","abstract_excerpt":"We use high resolution simulations of isolated dwarf galaxies to study the physics of dark matter cusp-core transformations at the edge of galaxy formation: M200 = 10^7 - 10^9 Msun. We work at a resolution (~4 pc minimum cell size; ~250 Msun per particle) at which the impact from individual supernovae explosions can be resolved, becoming insensitive to even large changes in our numerical 'sub-grid' parameters. We find that our dwarf galaxies give a remarkable match to the stellar light profile; star formation history; metallicity distribution function; and star/gas kinematics of isolated dwarf"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04143","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-18T01:15:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FG18LeutQttJSgFGg67f8QEbAEdMbFgLWvbYt/2XqbfZKb1F8zpRws87KsUOLHlp6+aQTx5PdUpHXs3FNU1tAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-21T08:52:39.024401Z"},"content_sha256":"754f56ac2595c8fd13d1c85073ee3cac989ffed901665dac38cabbbf4157850e","schema_version":"1.0","event_id":"sha256:754f56ac2595c8fd13d1c85073ee3cac989ffed901665dac38cabbbf4157850e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SF3FJCAGLLTH2HCS44ISSRZTAW/bundle.json","state_url":"https://pith.science/pith/SF3FJCAGLLTH2HCS44ISSRZTAW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SF3FJCAGLLTH2HCS44ISSRZTAW/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":"2026-05-21T08:52:39Z","links":{"resolver":"https://pith.science/pith/SF3FJCAGLLTH2HCS44ISSRZTAW","bundle":"https://pith.science/pith/SF3FJCAGLLTH2HCS44ISSRZTAW/bundle.json","state":"https://pith.science/pith/SF3FJCAGLLTH2HCS44ISSRZTAW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SF3FJCAGLLTH2HCS44ISSRZTAW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SF3FJCAGLLTH2HCS44ISSRZTAW","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":"a10f36b07aa22b8114d7648af339e327c70515e05d8ea779363f2e0564bcad9f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-17T20:07:34Z","title_canon_sha256":"388ff08c2a9cf20999d0398fc0f7d4c96c245b3c17f4acfbe59082190a9f87d7"},"schema_version":"1.0","source":{"id":"1508.04143","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04143","created_at":"2026-05-18T01:15:36Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04143v3","created_at":"2026-05-18T01:15:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04143","created_at":"2026-05-18T01:15:36Z"},{"alias_kind":"pith_short_12","alias_value":"SF3FJCAGLLTH","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_16","alias_value":"SF3FJCAGLLTH2HCS","created_at":"2026-05-18T12:29:39Z"},{"alias_kind":"pith_short_8","alias_value":"SF3FJCAG","created_at":"2026-05-18T12:29:39Z"}],"graph_snapshots":[{"event_id":"sha256:754f56ac2595c8fd13d1c85073ee3cac989ffed901665dac38cabbbf4157850e","target":"graph","created_at":"2026-05-18T01:15:36Z","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"},"paper":{"abstract_excerpt":"We use high resolution simulations of isolated dwarf galaxies to study the physics of dark matter cusp-core transformations at the edge of galaxy formation: M200 = 10^7 - 10^9 Msun. We work at a resolution (~4 pc minimum cell size; ~250 Msun per particle) at which the impact from individual supernovae explosions can be resolved, becoming insensitive to even large changes in our numerical 'sub-grid' parameters. We find that our dwarf galaxies give a remarkable match to the stellar light profile; star formation history; metallicity distribution function; and star/gas kinematics of isolated dwarf","authors_text":"J. I. Read, M. L. M. Collins, O. Agertz","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-17T20:07:34Z","title":"Dark matter cores all the way down"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04143","kind":"arxiv","version":3},"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":"sha256:4e7f3adafef6d92327a779ff3ecd38a1dd42a002bafea56738337ebd30bdfc0b","target":"record","created_at":"2026-05-18T01:15:36Z","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":"a10f36b07aa22b8114d7648af339e327c70515e05d8ea779363f2e0564bcad9f","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-08-17T20:07:34Z","title_canon_sha256":"388ff08c2a9cf20999d0398fc0f7d4c96c245b3c17f4acfbe59082190a9f87d7"},"schema_version":"1.0","source":{"id":"1508.04143","kind":"arxiv","version":3}},"canonical_sha256":"91765488065ae67d1c52e71129473305a50924ec6f0a6b8107c7e572931c6df0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"91765488065ae67d1c52e71129473305a50924ec6f0a6b8107c7e572931c6df0","first_computed_at":"2026-05-18T01:15:36.148049Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:15:36.148049Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SQ1H3NKQz9zZnhyEIbsi89rwR7bdDv4AsJrKla6C83caWdDbf2xc9vWVXyjZzv4RB7nScL9yB6v3eDmsergHAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:15:36.149054Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.04143","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e7f3adafef6d92327a779ff3ecd38a1dd42a002bafea56738337ebd30bdfc0b","sha256:754f56ac2595c8fd13d1c85073ee3cac989ffed901665dac38cabbbf4157850e"],"state_sha256":"da550239c7ab44eaabf57d1d218ac51a701c7a6ae2b408adbed78e2533147eb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/AQglo2LgWAKB3+SDdAmkGQh+mLXMr+Mj+iGnjg0Je9yxJLsUB48UUNEeu2SnPQgOmG0bnzBidWGBbrLgg1eBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-21T08:52:39.027781Z","bundle_sha256":"f7011f4c7f31be86d1ffa2121bf7ea892081ee0640755e643f4640e499bb7f94"}}