{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:UG4PEOTGK6BMGYZQ4GCP6ZJLS7","short_pith_number":"pith:UG4PEOTG","canonical_record":{"source":{"id":"1401.7653","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T20:40:43Z","cross_cats_sorted":[],"title_canon_sha256":"85cc5402009854b8844c96b302d4b5eb4f6dcdf8f51b5b87fc92b1795acb7bee","abstract_canon_sha256":"444b966948e1ecdfb099ad0bea68902fce27781018049c44935becf4e310de68"},"schema_version":"1.0"},"canonical_sha256":"a1b8f23a665782c36330e184ff652b97d16d49dd1bccfe6d8ce353e2dca7f4b3","source":{"kind":"arxiv","id":"1401.7653","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.7653","created_at":"2026-05-18T01:44:54Z"},{"alias_kind":"arxiv_version","alias_value":"1401.7653v1","created_at":"2026-05-18T01:44:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.7653","created_at":"2026-05-18T01:44:54Z"},{"alias_kind":"pith_short_12","alias_value":"UG4PEOTGK6BM","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UG4PEOTGK6BMGYZQ","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UG4PEOTG","created_at":"2026-05-18T12:28:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:UG4PEOTGK6BMGYZQ4GCP6ZJLS7","target":"record","payload":{"canonical_record":{"source":{"id":"1401.7653","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T20:40:43Z","cross_cats_sorted":[],"title_canon_sha256":"85cc5402009854b8844c96b302d4b5eb4f6dcdf8f51b5b87fc92b1795acb7bee","abstract_canon_sha256":"444b966948e1ecdfb099ad0bea68902fce27781018049c44935becf4e310de68"},"schema_version":"1.0"},"canonical_sha256":"a1b8f23a665782c36330e184ff652b97d16d49dd1bccfe6d8ce353e2dca7f4b3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:44:54.835541Z","signature_b64":"qhbv6eF6vdzcBco+c8w9LBDrYI9+wFnZ4oCCOIvn4VAgUMs+UGqyhA9jdV7iQDtWygWNucKBul3aiwEFpRWNAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a1b8f23a665782c36330e184ff652b97d16d49dd1bccfe6d8ce353e2dca7f4b3","last_reissued_at":"2026-05-18T01:44:54.834880Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:44:54.834880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1401.7653","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":"2026-05-18T01:44:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+BImfvsDqGbWg3bUgfm+eouF6i5Y2Hm0xiK4kpV5vHiV0PVq8gBMz2UBrJger32kC4tP5ry/fNvTbPmhKFwDAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:58:36.237899Z"},"content_sha256":"29fc7589e51ea1524b5dd8147a729f3acbc271f8af78468793d5f273241106d7","schema_version":"1.0","event_id":"sha256:29fc7589e51ea1524b5dd8147a729f3acbc271f8af78468793d5f273241106d7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:UG4PEOTGK6BMGYZQ4GCP6ZJLS7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Celestial Buffet: multiple populations and globular cluster formation in dwarf galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Aaron J. Maxwell, Alison Sills, H.M.P. Couchman, James Wadsley","submitted_at":"2014-01-29T20:40:43Z","abstract_excerpt":"We present a framework that explains the commonly observed variation in light element abundances in globular clusters. If globular clusters form in the centres of dwarf galaxies, they will be pumped onto larger orbits as star formation progresses. The potential well will only retain the moderate velocity AGB ejecta, the expected source of enrichment, but not supernova ejecta. There is no need to increase the initial cluster mass, a requirement of self-enrichment scenarios, as all the stars within the dwarf can contribute. As the clusters move through the dwarf centre they sweep up a mix of AGB"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.7653","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":""},"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":"2026-05-18T01:44:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EM0bBj4CC2zILQviiA+Cadqwddosyxaqz2jUo5GNZa4XH6ewg0aHvTr9qL4V38AhataRsQv0HeIcCuJlKxvWDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:58:36.238252Z"},"content_sha256":"3a63e99949cfb8d4158166662c23cc9ec081a2a194dfc11d8876d2cb9fe7f2d3","schema_version":"1.0","event_id":"sha256:3a63e99949cfb8d4158166662c23cc9ec081a2a194dfc11d8876d2cb9fe7f2d3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7/bundle.json","state_url":"https://pith.science/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7/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":"2026-06-02T21:58:36Z","links":{"resolver":"https://pith.science/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7","bundle":"https://pith.science/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7/bundle.json","state":"https://pith.science/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UG4PEOTGK6BMGYZQ4GCP6ZJLS7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:UG4PEOTGK6BMGYZQ4GCP6ZJLS7","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":"444b966948e1ecdfb099ad0bea68902fce27781018049c44935becf4e310de68","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T20:40:43Z","title_canon_sha256":"85cc5402009854b8844c96b302d4b5eb4f6dcdf8f51b5b87fc92b1795acb7bee"},"schema_version":"1.0","source":{"id":"1401.7653","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1401.7653","created_at":"2026-05-18T01:44:54Z"},{"alias_kind":"arxiv_version","alias_value":"1401.7653v1","created_at":"2026-05-18T01:44:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.7653","created_at":"2026-05-18T01:44:54Z"},{"alias_kind":"pith_short_12","alias_value":"UG4PEOTGK6BM","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_16","alias_value":"UG4PEOTGK6BMGYZQ","created_at":"2026-05-18T12:28:52Z"},{"alias_kind":"pith_short_8","alias_value":"UG4PEOTG","created_at":"2026-05-18T12:28:52Z"}],"graph_snapshots":[{"event_id":"sha256:3a63e99949cfb8d4158166662c23cc9ec081a2a194dfc11d8876d2cb9fe7f2d3","target":"graph","created_at":"2026-05-18T01:44:54Z","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 present a framework that explains the commonly observed variation in light element abundances in globular clusters. If globular clusters form in the centres of dwarf galaxies, they will be pumped onto larger orbits as star formation progresses. The potential well will only retain the moderate velocity AGB ejecta, the expected source of enrichment, but not supernova ejecta. There is no need to increase the initial cluster mass, a requirement of self-enrichment scenarios, as all the stars within the dwarf can contribute. As the clusters move through the dwarf centre they sweep up a mix of AGB","authors_text":"Aaron J. Maxwell, Alison Sills, H.M.P. Couchman, James Wadsley","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T20:40:43Z","title":"The Celestial Buffet: multiple populations and globular cluster formation in dwarf galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.7653","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":"sha256:29fc7589e51ea1524b5dd8147a729f3acbc271f8af78468793d5f273241106d7","target":"record","created_at":"2026-05-18T01:44:54Z","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":"444b966948e1ecdfb099ad0bea68902fce27781018049c44935becf4e310de68","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-01-29T20:40:43Z","title_canon_sha256":"85cc5402009854b8844c96b302d4b5eb4f6dcdf8f51b5b87fc92b1795acb7bee"},"schema_version":"1.0","source":{"id":"1401.7653","kind":"arxiv","version":1}},"canonical_sha256":"a1b8f23a665782c36330e184ff652b97d16d49dd1bccfe6d8ce353e2dca7f4b3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a1b8f23a665782c36330e184ff652b97d16d49dd1bccfe6d8ce353e2dca7f4b3","first_computed_at":"2026-05-18T01:44:54.834880Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:44:54.834880Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qhbv6eF6vdzcBco+c8w9LBDrYI9+wFnZ4oCCOIvn4VAgUMs+UGqyhA9jdV7iQDtWygWNucKBul3aiwEFpRWNAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:44:54.835541Z","signed_message":"canonical_sha256_bytes"},"source_id":"1401.7653","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:29fc7589e51ea1524b5dd8147a729f3acbc271f8af78468793d5f273241106d7","sha256:3a63e99949cfb8d4158166662c23cc9ec081a2a194dfc11d8876d2cb9fe7f2d3"],"state_sha256":"829f6ed44635cddbebdbd1281b9f2cbc8b84eb31346082b538bffa8215dbb37f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pUMx0WshhQcR2wOicEnoCG+FwkwYE6z9AyK9TPe/lcX6ZRbEJei418fJuIYe9WKq2nYdvyi2MJ8ABMRwqfeVDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:58:36.240170Z","bundle_sha256":"5cfc6480598fdff4f23e518a3c31dd52f5ca160212e7a59be7addf9ec3c7f3ca"}}