{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:HP2J23XOMJQPHBTFBRXUF7U3KB","short_pith_number":"pith:HP2J23XO","canonical_record":{"source":{"id":"1204.1806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-09T06:30:29Z","cross_cats_sorted":[],"title_canon_sha256":"23e39efba7841aa2acfe8edab3999175d17c48589d628407338002081125eb5e","abstract_canon_sha256":"c16cda214b5b91ae36b95a3679ab389bfadc2fa4ff88d915db490212ba4a9e75"},"schema_version":"1.0"},"canonical_sha256":"3bf49d6eee6260f386650c6f42fe9b504e178d48787601620a9129e5f0eb4889","source":{"kind":"arxiv","id":"1204.1806","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.1806","created_at":"2026-05-18T03:58:15Z"},{"alias_kind":"arxiv_version","alias_value":"1204.1806v1","created_at":"2026-05-18T03:58:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.1806","created_at":"2026-05-18T03:58:15Z"},{"alias_kind":"pith_short_12","alias_value":"HP2J23XOMJQP","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HP2J23XOMJQPHBTF","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HP2J23XO","created_at":"2026-05-18T12:27:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:HP2J23XOMJQPHBTFBRXUF7U3KB","target":"record","payload":{"canonical_record":{"source":{"id":"1204.1806","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-09T06:30:29Z","cross_cats_sorted":[],"title_canon_sha256":"23e39efba7841aa2acfe8edab3999175d17c48589d628407338002081125eb5e","abstract_canon_sha256":"c16cda214b5b91ae36b95a3679ab389bfadc2fa4ff88d915db490212ba4a9e75"},"schema_version":"1.0"},"canonical_sha256":"3bf49d6eee6260f386650c6f42fe9b504e178d48787601620a9129e5f0eb4889","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:58:15.105616Z","signature_b64":"VmC8aONZJ6IN3LQaIlL6GdjMmwQihO64D9KAohmo21kQDJeqRLbB+8MXvqL8rEmbfhu1X3EWdK7/iH6xbf+rBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3bf49d6eee6260f386650c6f42fe9b504e178d48787601620a9129e5f0eb4889","last_reissued_at":"2026-05-18T03:58:15.104505Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:58:15.104505Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.1806","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":"2026-05-18T03:58:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pfsXWKn3Urlmv0P1nwiheCwrNDhkVmFc8ff27oqXDIS6xLi8JKQ5U3rYBk8Xuk6feP91MZojElpliwzIbiPmBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:40:27.520147Z"},"content_sha256":"7696991e92e1652c65b14b42cf9363bd0fd1c689a113d14c3584f17e5244a6e3","schema_version":"1.0","event_id":"sha256:7696991e92e1652c65b14b42cf9363bd0fd1c689a113d14c3584f17e5244a6e3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:HP2J23XOMJQPHBTFBRXUF7U3KB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectroscopic characterization of FHLC stars from the Hamburg/ESO survey and a newly found HdC star","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Aruna Goswami (Indian Institute of Astrophysics, Bangalore)","submitted_at":"2012-04-09T06:30:29Z","abstract_excerpt":"The sample of candidate faint high latitude carbon (FHLC) stars chosen from the Hamburg/ESO survey is a potential source to search for objects of rare types. From medium resolution spectral analyses of about 250 objects from this sample, the object HE 1015-2050, was found to be a hydrogen-deficient carbon (HdC) star. Apart from U Aquarii, HE 1015-2050 is the only example, till now, of a Galactic cool HdC star that is characterized by strong spectral features of light s-process element Sr, and weak features of heavy s-process elements such as Ba. This object, with its enhanced carbon and hydrog"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.1806","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":"2026-05-18T03:58:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M02ou39cbmZFCUNlzC7opapaEo/zRIVcKj42fOApybMnVGf7m82zHCMQRYVdYk8Cd/nnFcPOwCZCdLghS2AdDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T22:40:27.520832Z"},"content_sha256":"15eb49776b9b16cfdfba8d29be899a4e44dba116683bfcb03798ac322e4e3697","schema_version":"1.0","event_id":"sha256:15eb49776b9b16cfdfba8d29be899a4e44dba116683bfcb03798ac322e4e3697"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HP2J23XOMJQPHBTFBRXUF7U3KB/bundle.json","state_url":"https://pith.science/pith/HP2J23XOMJQPHBTFBRXUF7U3KB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HP2J23XOMJQPHBTFBRXUF7U3KB/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":"2026-06-05T22:40:27Z","links":{"resolver":"https://pith.science/pith/HP2J23XOMJQPHBTFBRXUF7U3KB","bundle":"https://pith.science/pith/HP2J23XOMJQPHBTFBRXUF7U3KB/bundle.json","state":"https://pith.science/pith/HP2J23XOMJQPHBTFBRXUF7U3KB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HP2J23XOMJQPHBTFBRXUF7U3KB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:HP2J23XOMJQPHBTFBRXUF7U3KB","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":"c16cda214b5b91ae36b95a3679ab389bfadc2fa4ff88d915db490212ba4a9e75","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-09T06:30:29Z","title_canon_sha256":"23e39efba7841aa2acfe8edab3999175d17c48589d628407338002081125eb5e"},"schema_version":"1.0","source":{"id":"1204.1806","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.1806","created_at":"2026-05-18T03:58:15Z"},{"alias_kind":"arxiv_version","alias_value":"1204.1806v1","created_at":"2026-05-18T03:58:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.1806","created_at":"2026-05-18T03:58:15Z"},{"alias_kind":"pith_short_12","alias_value":"HP2J23XOMJQP","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_16","alias_value":"HP2J23XOMJQPHBTF","created_at":"2026-05-18T12:27:09Z"},{"alias_kind":"pith_short_8","alias_value":"HP2J23XO","created_at":"2026-05-18T12:27:09Z"}],"graph_snapshots":[{"event_id":"sha256:15eb49776b9b16cfdfba8d29be899a4e44dba116683bfcb03798ac322e4e3697","target":"graph","created_at":"2026-05-18T03:58:15Z","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":"The sample of candidate faint high latitude carbon (FHLC) stars chosen from the Hamburg/ESO survey is a potential source to search for objects of rare types. From medium resolution spectral analyses of about 250 objects from this sample, the object HE 1015-2050, was found to be a hydrogen-deficient carbon (HdC) star. Apart from U Aquarii, HE 1015-2050 is the only example, till now, of a Galactic cool HdC star that is characterized by strong spectral features of light s-process element Sr, and weak features of heavy s-process elements such as Ba. This object, with its enhanced carbon and hydrog","authors_text":"Aruna Goswami (Indian Institute of Astrophysics, Bangalore)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-09T06:30:29Z","title":"Spectroscopic characterization of FHLC stars from the Hamburg/ESO survey and a newly found HdC star"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.1806","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":"sha256:7696991e92e1652c65b14b42cf9363bd0fd1c689a113d14c3584f17e5244a6e3","target":"record","created_at":"2026-05-18T03:58:15Z","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":"c16cda214b5b91ae36b95a3679ab389bfadc2fa4ff88d915db490212ba4a9e75","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2012-04-09T06:30:29Z","title_canon_sha256":"23e39efba7841aa2acfe8edab3999175d17c48589d628407338002081125eb5e"},"schema_version":"1.0","source":{"id":"1204.1806","kind":"arxiv","version":1}},"canonical_sha256":"3bf49d6eee6260f386650c6f42fe9b504e178d48787601620a9129e5f0eb4889","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3bf49d6eee6260f386650c6f42fe9b504e178d48787601620a9129e5f0eb4889","first_computed_at":"2026-05-18T03:58:15.104505Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:58:15.104505Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VmC8aONZJ6IN3LQaIlL6GdjMmwQihO64D9KAohmo21kQDJeqRLbB+8MXvqL8rEmbfhu1X3EWdK7/iH6xbf+rBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:58:15.105616Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.1806","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7696991e92e1652c65b14b42cf9363bd0fd1c689a113d14c3584f17e5244a6e3","sha256:15eb49776b9b16cfdfba8d29be899a4e44dba116683bfcb03798ac322e4e3697"],"state_sha256":"218935ad33ed77088a47c13ed5f1b2a2d009cf56c59be99b7e6755a172f8e2ea"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nljHv3qvonGDvaQg9EVNB/vvKnX5QscxRe2NtLhY+EgjVA/wvvZIrz8J1ZLoRpxHlYNLWmuazv2RW5b2a5SlBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T22:40:27.524996Z","bundle_sha256":"ead0653cf8b93e6aedc11d7d9e079db24e74ab69ab384d9aae1fde8be6859932"}}