{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:Y7SNDVPHLIZBD7TVFQAUUCCVKR","short_pith_number":"pith:Y7SNDVPH","canonical_record":{"source":{"id":"1509.02741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-09T12:06:08Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"40d288e08974b277dc2132bddd5264af84569be4584ae5e10e864d88641240da","abstract_canon_sha256":"4db52149ac8c13050a711620be0912ec1f6ce66a8684ad6f5884f8232c267337"},"schema_version":"1.0"},"canonical_sha256":"c7e4d1d5e75a3211fe752c014a085554629a0d43b95f872bfb038fc8276c328d","source":{"kind":"arxiv","id":"1509.02741","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.02741","created_at":"2026-05-18T01:30:17Z"},{"alias_kind":"arxiv_version","alias_value":"1509.02741v1","created_at":"2026-05-18T01:30:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.02741","created_at":"2026-05-18T01:30:17Z"},{"alias_kind":"pith_short_12","alias_value":"Y7SNDVPHLIZB","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"Y7SNDVPHLIZBD7TV","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"Y7SNDVPH","created_at":"2026-05-18T12:29:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:Y7SNDVPHLIZBD7TVFQAUUCCVKR","target":"record","payload":{"canonical_record":{"source":{"id":"1509.02741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-09T12:06:08Z","cross_cats_sorted":["astro-ph.EP"],"title_canon_sha256":"40d288e08974b277dc2132bddd5264af84569be4584ae5e10e864d88641240da","abstract_canon_sha256":"4db52149ac8c13050a711620be0912ec1f6ce66a8684ad6f5884f8232c267337"},"schema_version":"1.0"},"canonical_sha256":"c7e4d1d5e75a3211fe752c014a085554629a0d43b95f872bfb038fc8276c328d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:30:17.830032Z","signature_b64":"GZn4HkFS5gHI0UwkoMypJed896WlMOR9wOLzW7p5saOYGOZCtboYOayfAovNuy0kck28kMY1/03Ch0QiS858Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c7e4d1d5e75a3211fe752c014a085554629a0d43b95f872bfb038fc8276c328d","last_reissued_at":"2026-05-18T01:30:17.829309Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:30:17.829309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1509.02741","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":"2026-05-18T01:30:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bUUBPSzCeYlsJg3maVvO0bUzk/tZuF0dddhBZdtNf9dq8F86tdYX9shuOIYGVFy0U6HVpfowwVu8ipxAxGtWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:40:32.461037Z"},"content_sha256":"60edb646bafbe2dcdfc8fda80daeafb742b87cef9f573b6e01fd821aa6437976","schema_version":"1.0","event_id":"sha256:60edb646bafbe2dcdfc8fda80daeafb742b87cef9f573b6e01fd821aa6437976"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:Y7SNDVPHLIZBD7TVFQAUUCCVKR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fingerprints of giant planets in the photospheres of Herbig stars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP"],"primary_cat":"astro-ph.SR","authors_text":"Colin P. Folsom, Mihkel Kama, Paola Pinilla","submitted_at":"2015-09-09T12:06:08Z","abstract_excerpt":"Around 2% of all A stars have photospheres depleted in refractory elements. This is hypothesized to arise from a preferential accretion of gas rather than dust, but the specific processes and the origin of the material -- circum- or interstellar -- are not known. The same depletion is seen in 30% of young, disk-hosting Herbig Ae/Be stars. We investigate whether the chemical peculiarity originates in a circumstellar disk. Using a sample of systems for which both the stellar abundances and the protoplanetary disk structure are known, we find that stars hosting warm, flaring group I disks typical"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.02741","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":"2026-05-18T01:30:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oAhyJdAUHFz96E4Em+EXGZAa7mftuVBu3OLiXkqRwNIhwV2PKBiTtugBlUPsnU8n3avs4l2c2Rv6FXrps5PzAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T02:40:32.461629Z"},"content_sha256":"515e382a136c0f83565f2843ac2ffb535f21046fe4a53b67fab6b54c69ee7a08","schema_version":"1.0","event_id":"sha256:515e382a136c0f83565f2843ac2ffb535f21046fe4a53b67fab6b54c69ee7a08"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR/bundle.json","state_url":"https://pith.science/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR/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":"2026-06-08T02:40:32Z","links":{"resolver":"https://pith.science/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR","bundle":"https://pith.science/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR/bundle.json","state":"https://pith.science/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Y7SNDVPHLIZBD7TVFQAUUCCVKR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:Y7SNDVPHLIZBD7TVFQAUUCCVKR","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":"4db52149ac8c13050a711620be0912ec1f6ce66a8684ad6f5884f8232c267337","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-09T12:06:08Z","title_canon_sha256":"40d288e08974b277dc2132bddd5264af84569be4584ae5e10e864d88641240da"},"schema_version":"1.0","source":{"id":"1509.02741","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1509.02741","created_at":"2026-05-18T01:30:17Z"},{"alias_kind":"arxiv_version","alias_value":"1509.02741v1","created_at":"2026-05-18T01:30:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1509.02741","created_at":"2026-05-18T01:30:17Z"},{"alias_kind":"pith_short_12","alias_value":"Y7SNDVPHLIZB","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_16","alias_value":"Y7SNDVPHLIZBD7TV","created_at":"2026-05-18T12:29:50Z"},{"alias_kind":"pith_short_8","alias_value":"Y7SNDVPH","created_at":"2026-05-18T12:29:50Z"}],"graph_snapshots":[{"event_id":"sha256:515e382a136c0f83565f2843ac2ffb535f21046fe4a53b67fab6b54c69ee7a08","target":"graph","created_at":"2026-05-18T01:30:17Z","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":"Around 2% of all A stars have photospheres depleted in refractory elements. This is hypothesized to arise from a preferential accretion of gas rather than dust, but the specific processes and the origin of the material -- circum- or interstellar -- are not known. The same depletion is seen in 30% of young, disk-hosting Herbig Ae/Be stars. We investigate whether the chemical peculiarity originates in a circumstellar disk. Using a sample of systems for which both the stellar abundances and the protoplanetary disk structure are known, we find that stars hosting warm, flaring group I disks typical","authors_text":"Colin P. Folsom, Mihkel Kama, Paola Pinilla","cross_cats":["astro-ph.EP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-09T12:06:08Z","title":"Fingerprints of giant planets in the photospheres of Herbig stars"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.02741","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":"sha256:60edb646bafbe2dcdfc8fda80daeafb742b87cef9f573b6e01fd821aa6437976","target":"record","created_at":"2026-05-18T01:30:17Z","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":"4db52149ac8c13050a711620be0912ec1f6ce66a8684ad6f5884f8232c267337","cross_cats_sorted":["astro-ph.EP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-09-09T12:06:08Z","title_canon_sha256":"40d288e08974b277dc2132bddd5264af84569be4584ae5e10e864d88641240da"},"schema_version":"1.0","source":{"id":"1509.02741","kind":"arxiv","version":1}},"canonical_sha256":"c7e4d1d5e75a3211fe752c014a085554629a0d43b95f872bfb038fc8276c328d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c7e4d1d5e75a3211fe752c014a085554629a0d43b95f872bfb038fc8276c328d","first_computed_at":"2026-05-18T01:30:17.829309Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:30:17.829309Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GZn4HkFS5gHI0UwkoMypJed896WlMOR9wOLzW7p5saOYGOZCtboYOayfAovNuy0kck28kMY1/03Ch0QiS858Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:30:17.830032Z","signed_message":"canonical_sha256_bytes"},"source_id":"1509.02741","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:60edb646bafbe2dcdfc8fda80daeafb742b87cef9f573b6e01fd821aa6437976","sha256:515e382a136c0f83565f2843ac2ffb535f21046fe4a53b67fab6b54c69ee7a08"],"state_sha256":"fada003c0f5de63fb34e1f56acc515677858e3b81fe9a8a5f175fae28f27acf8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AKHKPTd00+5aADDQjIn9KghSfHuEzpE3ykJHJM0GMgNJmkT8IJCIzHbjPe4Kc3UHReTrHY3fb01wXyC/HR/VDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T02:40:32.465885Z","bundle_sha256":"60fdc73bb4c22049c01a1cb8820715f1366046ed7168821543f1696715c73738"}}