{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:4Z3M3SP4OJOJHOLHY7JRS4W4WJ","short_pith_number":"pith:4Z3M3SP4","canonical_record":{"source":{"id":"1611.01616","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-11-05T08:32:28Z","cross_cats_sorted":[],"title_canon_sha256":"46168c98f4009edcb946e28cbb5dc766c3d35829c63ddc6bbe3c61c3ddd89f9d","abstract_canon_sha256":"8a79dda31024ede59fd30eefe7b5694c935756f337aa1d51c34c1326595002a6"},"schema_version":"1.0"},"canonical_sha256":"e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7","source":{"kind":"arxiv","id":"1611.01616","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01616","created_at":"2026-05-18T01:00:04Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01616v1","created_at":"2026-05-18T01:00:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01616","created_at":"2026-05-18T01:00:04Z"},{"alias_kind":"pith_short_12","alias_value":"4Z3M3SP4OJOJ","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4Z3M3SP4OJOJHOLH","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4Z3M3SP4","created_at":"2026-05-18T12:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:4Z3M3SP4OJOJHOLHY7JRS4W4WJ","target":"record","payload":{"canonical_record":{"source":{"id":"1611.01616","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-11-05T08:32:28Z","cross_cats_sorted":[],"title_canon_sha256":"46168c98f4009edcb946e28cbb5dc766c3d35829c63ddc6bbe3c61c3ddd89f9d","abstract_canon_sha256":"8a79dda31024ede59fd30eefe7b5694c935756f337aa1d51c34c1326595002a6"},"schema_version":"1.0"},"canonical_sha256":"e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:00:04.862243Z","signature_b64":"J/EVxuSEsB3cUgsNlcx05CVnvmSmnBXlyKNp4VbYzpQcdozzRKd0fLcfw5KvIU6qrPAQ/OIKUVWKe4StMyxnDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7","last_reissued_at":"2026-05-18T01:00:04.861593Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:00:04.861593Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1611.01616","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":"2026-05-18T01:00:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tm/79fB3G9fcBPfHHHzeNoTyZtBhggA6Fh/AfcVUjsi6MLTLv7BSDkaUpHtOwhUGsKCGeGTkMjjuV64CQUAjBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:24:29.231853Z"},"content_sha256":"73a3da396ef7ef01a6df774432d88678bdd53be173167099c6db9add34d848ee","schema_version":"1.0","event_id":"sha256:73a3da396ef7ef01a6df774432d88678bdd53be173167099c6db9add34d848ee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:4Z3M3SP4OJOJHOLHY7JRS4W4WJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Discovery of a variable lead-rich hot subdwarf: UVO 0825+15","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A. Kvammen, A. S. Baran, C. S. Jeffery, H. P. Preece, J. H. Telting, M. D. Reed, Naslim N., N. T. Behara, P. Martin, R. H. {\\O}stensen, V. M. Woolf","submitted_at":"2016-11-05T08:32:28Z","abstract_excerpt":"UVO0825+15 is a hot bright helium-rich subdwarf which lies in {\\it K2} Field 5 and in a sample of intermediate helium-rich subdwarfs observed with {\\it Subaru/HDS}. The {\\it K2} light curve shows low-amplitude variations, whilst the {\\it Subaru} spectrum shows Pb{\\sc iv} absorption lines, indicative of a very high lead overabundance. UVO0825+15 also has a high proper motion with kinematics typical for a thick disk star. Analyses of ultraviolet and intermediate dispersion optical spectra rule out a short-period binary companion, and provide fundamental atmospheric parameters of $T_{\\rm off}=38\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01616","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":"2026-05-18T01:00:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ir0sv9wZNSdUlwDn7HaRzvDmg1hw9F5ux6hocx7wQWGhWmSijkN9ueulH+Uj4Obl6e3M+zZmpfksZMMWU1LrDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:24:29.232201Z"},"content_sha256":"8bae3425ff24d7a9db1885f51dc9e133aeab3144ddac33a8acea52daa0194d60","schema_version":"1.0","event_id":"sha256:8bae3425ff24d7a9db1885f51dc9e133aeab3144ddac33a8acea52daa0194d60"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ/bundle.json","state_url":"https://pith.science/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ/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":"2026-06-03T20:24:29Z","links":{"resolver":"https://pith.science/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ","bundle":"https://pith.science/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ/bundle.json","state":"https://pith.science/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4Z3M3SP4OJOJHOLHY7JRS4W4WJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:4Z3M3SP4OJOJHOLHY7JRS4W4WJ","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":"8a79dda31024ede59fd30eefe7b5694c935756f337aa1d51c34c1326595002a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-11-05T08:32:28Z","title_canon_sha256":"46168c98f4009edcb946e28cbb5dc766c3d35829c63ddc6bbe3c61c3ddd89f9d"},"schema_version":"1.0","source":{"id":"1611.01616","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.01616","created_at":"2026-05-18T01:00:04Z"},{"alias_kind":"arxiv_version","alias_value":"1611.01616v1","created_at":"2026-05-18T01:00:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.01616","created_at":"2026-05-18T01:00:04Z"},{"alias_kind":"pith_short_12","alias_value":"4Z3M3SP4OJOJ","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"4Z3M3SP4OJOJHOLH","created_at":"2026-05-18T12:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"4Z3M3SP4","created_at":"2026-05-18T12:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:8bae3425ff24d7a9db1885f51dc9e133aeab3144ddac33a8acea52daa0194d60","target":"graph","created_at":"2026-05-18T01:00:04Z","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":"UVO0825+15 is a hot bright helium-rich subdwarf which lies in {\\it K2} Field 5 and in a sample of intermediate helium-rich subdwarfs observed with {\\it Subaru/HDS}. The {\\it K2} light curve shows low-amplitude variations, whilst the {\\it Subaru} spectrum shows Pb{\\sc iv} absorption lines, indicative of a very high lead overabundance. UVO0825+15 also has a high proper motion with kinematics typical for a thick disk star. Analyses of ultraviolet and intermediate dispersion optical spectra rule out a short-period binary companion, and provide fundamental atmospheric parameters of $T_{\\rm off}=38\\","authors_text":"A. Kvammen, A. S. Baran, C. S. Jeffery, H. P. Preece, J. H. Telting, M. D. Reed, Naslim N., N. T. Behara, P. Martin, R. H. {\\O}stensen, V. M. Woolf","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-11-05T08:32:28Z","title":"Discovery of a variable lead-rich hot subdwarf: UVO 0825+15"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.01616","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":"sha256:73a3da396ef7ef01a6df774432d88678bdd53be173167099c6db9add34d848ee","target":"record","created_at":"2026-05-18T01:00:04Z","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":"8a79dda31024ede59fd30eefe7b5694c935756f337aa1d51c34c1326595002a6","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-11-05T08:32:28Z","title_canon_sha256":"46168c98f4009edcb946e28cbb5dc766c3d35829c63ddc6bbe3c61c3ddd89f9d"},"schema_version":"1.0","source":{"id":"1611.01616","kind":"arxiv","version":1}},"canonical_sha256":"e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e676cdc9fc725c93b967c7d31972dcb260fcba3e82ae9b63d80b85929a9eb5a7","first_computed_at":"2026-05-18T01:00:04.861593Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:00:04.861593Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"J/EVxuSEsB3cUgsNlcx05CVnvmSmnBXlyKNp4VbYzpQcdozzRKd0fLcfw5KvIU6qrPAQ/OIKUVWKe4StMyxnDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:00:04.862243Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.01616","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73a3da396ef7ef01a6df774432d88678bdd53be173167099c6db9add34d848ee","sha256:8bae3425ff24d7a9db1885f51dc9e133aeab3144ddac33a8acea52daa0194d60"],"state_sha256":"1d3c48aed41a566fdce1f4aaa7a3e8106d7e662bf61820038404d446af8f3050"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U/zYjAhhWsKPMBL7HYBBndb9N0T8yxLWuN3DTEGWvFeLJbljhBCAA7U8+MTqvZdcHMECf6wgZ7ZkGQHhBLCVAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:24:29.234113Z","bundle_sha256":"60a1f9fa9860caf76b1569b871824731615a526890af15b1dc9b979214f8a1ce"}}