{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:X27CAWMQC4HEW26NIFNKB3HSR2","short_pith_number":"pith:X27CAWMQ","canonical_record":{"source":{"id":"1611.00759","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-02T19:59:55Z","cross_cats_sorted":[],"title_canon_sha256":"db483c24da03abcd0ffdf2dc2b1a340d257463b092133990b14f033727f8f254","abstract_canon_sha256":"3e2217df312db7ac40358d1bfe649e12c2f4c363964c4ccdce1b60e69f1b2468"},"schema_version":"1.0"},"canonical_sha256":"bebe205990170e4b6bcd415aa0ecf28e93598e0a9eded872058a78ae73770389","source":{"kind":"arxiv","id":"1611.00759","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.00759","created_at":"2026-05-18T00:26:01Z"},{"alias_kind":"arxiv_version","alias_value":"1611.00759v4","created_at":"2026-05-18T00:26:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.00759","created_at":"2026-05-18T00:26:01Z"},{"alias_kind":"pith_short_12","alias_value":"X27CAWMQC4HE","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X27CAWMQC4HEW26N","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X27CAWMQ","created_at":"2026-05-18T12:30:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:X27CAWMQC4HEW26NIFNKB3HSR2","target":"record","payload":{"canonical_record":{"source":{"id":"1611.00759","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-02T19:59:55Z","cross_cats_sorted":[],"title_canon_sha256":"db483c24da03abcd0ffdf2dc2b1a340d257463b092133990b14f033727f8f254","abstract_canon_sha256":"3e2217df312db7ac40358d1bfe649e12c2f4c363964c4ccdce1b60e69f1b2468"},"schema_version":"1.0"},"canonical_sha256":"bebe205990170e4b6bcd415aa0ecf28e93598e0a9eded872058a78ae73770389","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:26:01.715200Z","signature_b64":"9r7JVdhlCYBYV84Iw9l0BHXsEwzk/pceXliEnU57pPifeywM0ngykNOZWaerJ6pSMFlPm/L9tn0afCsOjAC0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bebe205990170e4b6bcd415aa0ecf28e93598e0a9eded872058a78ae73770389","last_reissued_at":"2026-05-18T00:26:01.714556Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:26:01.714556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.00759","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:26:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WYkxgdWV6t2mN4SoZzcGc2AHRwDdkviDRwjCZ6cuifxf/8KOaYHvzp9NoAxvc8mrppfQVQRn5rAMt08QdbQ7Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:48:22.643785Z"},"content_sha256":"bc95f7728dea97b788c50ca4c15776a478ae495b45a3eadae10d687564ba64b8","schema_version":"1.0","event_id":"sha256:bc95f7728dea97b788c50ca4c15776a478ae495b45a3eadae10d687564ba64b8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:X27CAWMQC4HEW26NIFNKB3HSR2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Tracing the first stars and galaxies of the Milky Way","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Alexander P. Ji, Anna Frebel, Brendan F. Griffen, Brian W. O'Shea, Facundo A. G\\'omez, Gregory A. Dooley","submitted_at":"2016-11-02T19:59:55Z","abstract_excerpt":"We use 30 high-resolution dark matter halos of the $Caterpillar$ simulation suite to probe the first stars and galaxies of Milky Way-mass systems. We quantify the environment of the high-$z$ progenitors of the Milky Way and connect them to the properties of the host and satellites today. We identify the formation sites of the first generation of Population III (Pop III) stars ($z$ ~ 25) and first galaxies ($z$ ~ 22) with several different models based on a minimum halo mass including a simple model for Lyman-Werner feedback. Through this method we find approximately 23,000 $\\pm$ 5,000 Pop III "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.00759","kind":"arxiv","version":4},"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":"2026-05-18T00:26:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PYYOe0kqX4alM/GUgQMCOlG72J53/NUkKYFQi0CNpFpHYZh68pDP9o6sXnvEV5X+YZva45wfwpLcC5+AixZ/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T07:48:22.644187Z"},"content_sha256":"4c0f236c3b1f84b95f88109b9c19080740c2f13e0557fc2f0291ec8da7f011ec","schema_version":"1.0","event_id":"sha256:4c0f236c3b1f84b95f88109b9c19080740c2f13e0557fc2f0291ec8da7f011ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X27CAWMQC4HEW26NIFNKB3HSR2/bundle.json","state_url":"https://pith.science/pith/X27CAWMQC4HEW26NIFNKB3HSR2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X27CAWMQC4HEW26NIFNKB3HSR2/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":"2026-05-30T07:48:22Z","links":{"resolver":"https://pith.science/pith/X27CAWMQC4HEW26NIFNKB3HSR2","bundle":"https://pith.science/pith/X27CAWMQC4HEW26NIFNKB3HSR2/bundle.json","state":"https://pith.science/pith/X27CAWMQC4HEW26NIFNKB3HSR2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X27CAWMQC4HEW26NIFNKB3HSR2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:X27CAWMQC4HEW26NIFNKB3HSR2","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":"3e2217df312db7ac40358d1bfe649e12c2f4c363964c4ccdce1b60e69f1b2468","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-02T19:59:55Z","title_canon_sha256":"db483c24da03abcd0ffdf2dc2b1a340d257463b092133990b14f033727f8f254"},"schema_version":"1.0","source":{"id":"1611.00759","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.00759","created_at":"2026-05-18T00:26:01Z"},{"alias_kind":"arxiv_version","alias_value":"1611.00759v4","created_at":"2026-05-18T00:26:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.00759","created_at":"2026-05-18T00:26:01Z"},{"alias_kind":"pith_short_12","alias_value":"X27CAWMQC4HE","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_16","alias_value":"X27CAWMQC4HEW26N","created_at":"2026-05-18T12:30:51Z"},{"alias_kind":"pith_short_8","alias_value":"X27CAWMQ","created_at":"2026-05-18T12:30:51Z"}],"graph_snapshots":[{"event_id":"sha256:4c0f236c3b1f84b95f88109b9c19080740c2f13e0557fc2f0291ec8da7f011ec","target":"graph","created_at":"2026-05-18T00:26:01Z","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 30 high-resolution dark matter halos of the $Caterpillar$ simulation suite to probe the first stars and galaxies of Milky Way-mass systems. We quantify the environment of the high-$z$ progenitors of the Milky Way and connect them to the properties of the host and satellites today. We identify the formation sites of the first generation of Population III (Pop III) stars ($z$ ~ 25) and first galaxies ($z$ ~ 22) with several different models based on a minimum halo mass including a simple model for Lyman-Werner feedback. Through this method we find approximately 23,000 $\\pm$ 5,000 Pop III ","authors_text":"Alexander P. Ji, Anna Frebel, Brendan F. Griffen, Brian W. O'Shea, Facundo A. G\\'omez, Gregory A. Dooley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-02T19:59:55Z","title":"Tracing the first stars and galaxies of the Milky Way"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.00759","kind":"arxiv","version":4},"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:bc95f7728dea97b788c50ca4c15776a478ae495b45a3eadae10d687564ba64b8","target":"record","created_at":"2026-05-18T00:26:01Z","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":"3e2217df312db7ac40358d1bfe649e12c2f4c363964c4ccdce1b60e69f1b2468","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2016-11-02T19:59:55Z","title_canon_sha256":"db483c24da03abcd0ffdf2dc2b1a340d257463b092133990b14f033727f8f254"},"schema_version":"1.0","source":{"id":"1611.00759","kind":"arxiv","version":4}},"canonical_sha256":"bebe205990170e4b6bcd415aa0ecf28e93598e0a9eded872058a78ae73770389","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bebe205990170e4b6bcd415aa0ecf28e93598e0a9eded872058a78ae73770389","first_computed_at":"2026-05-18T00:26:01.714556Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:26:01.714556Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"9r7JVdhlCYBYV84Iw9l0BHXsEwzk/pceXliEnU57pPifeywM0ngykNOZWaerJ6pSMFlPm/L9tn0afCsOjAC0CA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:26:01.715200Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.00759","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc95f7728dea97b788c50ca4c15776a478ae495b45a3eadae10d687564ba64b8","sha256:4c0f236c3b1f84b95f88109b9c19080740c2f13e0557fc2f0291ec8da7f011ec"],"state_sha256":"6f6a7677a83cd9d637f828ff6f1fd08d93e2bab4efd292af27fd2fad703c8d7d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EMzCqXkRlx/RBcsb899Bvjn5WE6aCddMKFA6rQt5ic7Yyub5oto1+Y8rFwTItoEqWcN94SDz/DSfQCnmltEbAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T07:48:22.646419Z","bundle_sha256":"cc3e8ca0fd4a5c91fd462dbbda86f6b094f5c4b58c0067f5832e4bd79cf4daab"}}