{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:HYKSHJ5QPZVXJ34C6BED2OCYKN","short_pith_number":"pith:HYKSHJ5Q","canonical_record":{"source":{"id":"1705.03049","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-08T18:55:39Z","cross_cats_sorted":[],"title_canon_sha256":"4926e17772603936d07eb9b1c0e4247e63e0f33e6431b6d109fb0965cedf0ae6","abstract_canon_sha256":"21c2dce03ee3e810ade2293973f1a226bdef0ae7ae5489ba4df41c7b6113807c"},"schema_version":"1.0"},"canonical_sha256":"3e1523a7b07e6b74ef82f0483d38585362da04021a62c523d78495945fa57052","source":{"kind":"arxiv","id":"1705.03049","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.03049","created_at":"2026-05-18T00:43:25Z"},{"alias_kind":"arxiv_version","alias_value":"1705.03049v1","created_at":"2026-05-18T00:43:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.03049","created_at":"2026-05-18T00:43:25Z"},{"alias_kind":"pith_short_12","alias_value":"HYKSHJ5QPZVX","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"HYKSHJ5QPZVXJ34C","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"HYKSHJ5Q","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:HYKSHJ5QPZVXJ34C6BED2OCYKN","target":"record","payload":{"canonical_record":{"source":{"id":"1705.03049","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-08T18:55:39Z","cross_cats_sorted":[],"title_canon_sha256":"4926e17772603936d07eb9b1c0e4247e63e0f33e6431b6d109fb0965cedf0ae6","abstract_canon_sha256":"21c2dce03ee3e810ade2293973f1a226bdef0ae7ae5489ba4df41c7b6113807c"},"schema_version":"1.0"},"canonical_sha256":"3e1523a7b07e6b74ef82f0483d38585362da04021a62c523d78495945fa57052","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:43:25.117404Z","signature_b64":"h573E+wPr7PxAHo4Kk8g/8y7W9m/3hLpucaxiRau3GFSjguwMTtjUfdcR6D6qh8DUITfxvPUME+Dlaeno9WiDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3e1523a7b07e6b74ef82f0483d38585362da04021a62c523d78495945fa57052","last_reissued_at":"2026-05-18T00:43:25.116843Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:43:25.116843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1705.03049","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":"2026-05-18T00:43:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mes0Z6aJH7UODSdNdacShrf3Ta39bi9GyLACL3tBU431Bm+CQ836bIvyN5139yDRWMmPLjFDhfyMe+oa1Z12Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T12:42:50.967450Z"},"content_sha256":"b403f2a30c8f2cdfd584c2e24e8845b94bf993c8adaf22e5f59f15844a0ddd34","schema_version":"1.0","event_id":"sha256:b403f2a30c8f2cdfd584c2e24e8845b94bf993c8adaf22e5f59f15844a0ddd34"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:HYKSHJ5QPZVXJ34C6BED2OCYKN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dust Abundance Variations in the Magellanic Clouds: Probing the Lifecycle of Metals with All-Sky Surveys","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Caroline Bot, Jeremy Chastenet, Julia Roman-Duval, Karl Gordon","submitted_at":"2017-05-08T18:55:39Z","abstract_excerpt":"Observations and modeling suggest that the dust abundance (gas-to-dust ratio, G/D) depends on (surface) density. The variations of the G/D provide constraints on the timescales for the different processes involved in the lifecycle of metals in galaxies. Recent G/D measurements based on Herschel data suggest a factor 5---10 decrease in the dust abundance between the dense and diffuse interstellar medium (ISM) in the Magellanic Clouds. However, the relative nature of the Herschel measurements precludes definitive conclusions on the magnitude of those variations. We investigate the variations of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.03049","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":"2026-05-18T00:43:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VCfGOasy9mYV9h9RcpJzgpY1o+t0IidwByOjeDunCSr2WHQnamH2uDDTq6ba3Nnsb0bHE+Uxbs6eXcdpC/BqCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-10T12:42:50.968396Z"},"content_sha256":"5322e1b6c2e75a3b3699c498a1e07af48c6d89987ee18c475f1d5ec222c07f72","schema_version":"1.0","event_id":"sha256:5322e1b6c2e75a3b3699c498a1e07af48c6d89987ee18c475f1d5ec222c07f72"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN/bundle.json","state_url":"https://pith.science/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN/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":"2026-08-10T12:42:50Z","links":{"resolver":"https://pith.science/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN","bundle":"https://pith.science/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN/bundle.json","state":"https://pith.science/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HYKSHJ5QPZVXJ34C6BED2OCYKN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:HYKSHJ5QPZVXJ34C6BED2OCYKN","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":"21c2dce03ee3e810ade2293973f1a226bdef0ae7ae5489ba4df41c7b6113807c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-08T18:55:39Z","title_canon_sha256":"4926e17772603936d07eb9b1c0e4247e63e0f33e6431b6d109fb0965cedf0ae6"},"schema_version":"1.0","source":{"id":"1705.03049","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1705.03049","created_at":"2026-05-18T00:43:25Z"},{"alias_kind":"arxiv_version","alias_value":"1705.03049v1","created_at":"2026-05-18T00:43:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1705.03049","created_at":"2026-05-18T00:43:25Z"},{"alias_kind":"pith_short_12","alias_value":"HYKSHJ5QPZVX","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"HYKSHJ5QPZVXJ34C","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"HYKSHJ5Q","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:5322e1b6c2e75a3b3699c498a1e07af48c6d89987ee18c475f1d5ec222c07f72","target":"graph","created_at":"2026-05-18T00:43:25Z","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":"Observations and modeling suggest that the dust abundance (gas-to-dust ratio, G/D) depends on (surface) density. The variations of the G/D provide constraints on the timescales for the different processes involved in the lifecycle of metals in galaxies. Recent G/D measurements based on Herschel data suggest a factor 5---10 decrease in the dust abundance between the dense and diffuse interstellar medium (ISM) in the Magellanic Clouds. However, the relative nature of the Herschel measurements precludes definitive conclusions on the magnitude of those variations. We investigate the variations of ","authors_text":"Caroline Bot, Jeremy Chastenet, Julia Roman-Duval, Karl Gordon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-08T18:55:39Z","title":"Dust Abundance Variations in the Magellanic Clouds: Probing the Lifecycle of Metals with All-Sky Surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1705.03049","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:b403f2a30c8f2cdfd584c2e24e8845b94bf993c8adaf22e5f59f15844a0ddd34","target":"record","created_at":"2026-05-18T00:43:25Z","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":"21c2dce03ee3e810ade2293973f1a226bdef0ae7ae5489ba4df41c7b6113807c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2017-05-08T18:55:39Z","title_canon_sha256":"4926e17772603936d07eb9b1c0e4247e63e0f33e6431b6d109fb0965cedf0ae6"},"schema_version":"1.0","source":{"id":"1705.03049","kind":"arxiv","version":1}},"canonical_sha256":"3e1523a7b07e6b74ef82f0483d38585362da04021a62c523d78495945fa57052","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3e1523a7b07e6b74ef82f0483d38585362da04021a62c523d78495945fa57052","first_computed_at":"2026-05-18T00:43:25.116843Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:43:25.116843Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h573E+wPr7PxAHo4Kk8g/8y7W9m/3hLpucaxiRau3GFSjguwMTtjUfdcR6D6qh8DUITfxvPUME+Dlaeno9WiDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:43:25.117404Z","signed_message":"canonical_sha256_bytes"},"source_id":"1705.03049","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b403f2a30c8f2cdfd584c2e24e8845b94bf993c8adaf22e5f59f15844a0ddd34","sha256:5322e1b6c2e75a3b3699c498a1e07af48c6d89987ee18c475f1d5ec222c07f72"],"state_sha256":"70209e3dad1617de7b4b9fd62773f680335ab8796075eaf08b3d671767e0ecce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Gkf9YcwB3a/kgphX4HXpawu13FQnukGEi3GJovHzWA14px36CUP7ah7yYtRFFxi7Bqnglv2kw/pIvxjcXXx4CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-10T12:42:50.972844Z","bundle_sha256":"dd70f7e461e4c4e6c485428f6618e9c53a22751e629f17af338afa027a38c2ae"}}