{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:UPIA7RO2BMUB7HGCQ4FFBNMSFS","short_pith_number":"pith:UPIA7RO2","canonical_record":{"source":{"id":"1104.4477","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-22T16:48:38Z","cross_cats_sorted":[],"title_canon_sha256":"607279f13b2f55490d473ef9224bedc6e75b2cb4e4f017f43087b9862974f3ab","abstract_canon_sha256":"9b2bc798130e7d7df9b689e57396e473e19c238e7dd26bedba42fbbd15afc2f3"},"schema_version":"1.0"},"canonical_sha256":"a3d00fc5da0b281f9cc2870a50b5922cbaea56c32dbe2588bfb00a785cd99ff9","source":{"kind":"arxiv","id":"1104.4477","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4477","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4477v1","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4477","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"pith_short_12","alias_value":"UPIA7RO2BMUB","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UPIA7RO2BMUB7HGC","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UPIA7RO2","created_at":"2026-05-18T12:26:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:UPIA7RO2BMUB7HGCQ4FFBNMSFS","target":"record","payload":{"canonical_record":{"source":{"id":"1104.4477","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-22T16:48:38Z","cross_cats_sorted":[],"title_canon_sha256":"607279f13b2f55490d473ef9224bedc6e75b2cb4e4f017f43087b9862974f3ab","abstract_canon_sha256":"9b2bc798130e7d7df9b689e57396e473e19c238e7dd26bedba42fbbd15afc2f3"},"schema_version":"1.0"},"canonical_sha256":"a3d00fc5da0b281f9cc2870a50b5922cbaea56c32dbe2588bfb00a785cd99ff9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:02:16.098444Z","signature_b64":"eRv5zGQ0MUzIxemIwRX04Jj5jKfVGHB6Of3PS47PJQNxHldfhcsKEhJSwnhS9Z3T0O9KPeGYkRHKMbHzM+OfCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a3d00fc5da0b281f9cc2870a50b5922cbaea56c32dbe2588bfb00a785cd99ff9","last_reissued_at":"2026-05-18T02:02:16.097732Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:02:16.097732Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1104.4477","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":"2026-05-18T02:02:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NYyg6cmeQZKMWfoGepWZXtMUZ4VkihgHvW+GBFz7e9a/J/YuPmR4Fh3+kY3GYtVaJJG0xTYuueECzijNZrP4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T23:32:52.510811Z"},"content_sha256":"4f698b18abfb0e57bdac769ebf0d982fbe9ae2c0bc59a0f2184a201dfcec53c9","schema_version":"1.0","event_id":"sha256:4f698b18abfb0e57bdac769ebf0d982fbe9ae2c0bc59a0f2184a201dfcec53c9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:UPIA7RO2BMUB7HGCQ4FFBNMSFS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Carbon Monoxide Abundance in Comet 103P/Hartley during the EPOXI Flyby","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"H. A. Weaver, M. F. A'Hearn, N. Dello Russo, P. D. Feldman, S. A. Stern","submitted_at":"2011-04-22T16:48:38Z","abstract_excerpt":"We report the detection of several emission bands in the CO Fourth Positive Group from comet 103P/Hartley during ultraviolet spectroscopic observations from the Hubble Space Telescope (HST) on 2010 November 4 near the time of closest approach by NASA's EPOXI spacecraft. The derived CO/H2O ratio is 0.15-0.45%, which places 103P among the most CO-depleted comets. Apparently this highly volatile species, whose abundance varies by a factor of ~50 among the comets observed to date, does not play a major role in producing the strong and temporally variable activity in 103P/Hartley. The CO emissions "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4477","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":"2026-05-18T02:02:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kVFEuxf9wcdi2YZ5ZnW1YLA8ED0iP+gGbwGxHg6ttAkTnBQUNaBaPNESMuVI1KpafXGRem7hEJALrliL81I/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T23:32:52.511550Z"},"content_sha256":"224eb205716e42208555b751f64742a22e72c45f88c07474c8d46a712271ac77","schema_version":"1.0","event_id":"sha256:224eb205716e42208555b751f64742a22e72c45f88c07474c8d46a712271ac77"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS/bundle.json","state_url":"https://pith.science/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS/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":"2026-06-10T23:32:52Z","links":{"resolver":"https://pith.science/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS","bundle":"https://pith.science/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS/bundle.json","state":"https://pith.science/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UPIA7RO2BMUB7HGCQ4FFBNMSFS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:UPIA7RO2BMUB7HGCQ4FFBNMSFS","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":"9b2bc798130e7d7df9b689e57396e473e19c238e7dd26bedba42fbbd15afc2f3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-22T16:48:38Z","title_canon_sha256":"607279f13b2f55490d473ef9224bedc6e75b2cb4e4f017f43087b9862974f3ab"},"schema_version":"1.0","source":{"id":"1104.4477","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1104.4477","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"arxiv_version","alias_value":"1104.4477v1","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1104.4477","created_at":"2026-05-18T02:02:16Z"},{"alias_kind":"pith_short_12","alias_value":"UPIA7RO2BMUB","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_16","alias_value":"UPIA7RO2BMUB7HGC","created_at":"2026-05-18T12:26:42Z"},{"alias_kind":"pith_short_8","alias_value":"UPIA7RO2","created_at":"2026-05-18T12:26:42Z"}],"graph_snapshots":[{"event_id":"sha256:224eb205716e42208555b751f64742a22e72c45f88c07474c8d46a712271ac77","target":"graph","created_at":"2026-05-18T02:02:16Z","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 report the detection of several emission bands in the CO Fourth Positive Group from comet 103P/Hartley during ultraviolet spectroscopic observations from the Hubble Space Telescope (HST) on 2010 November 4 near the time of closest approach by NASA's EPOXI spacecraft. The derived CO/H2O ratio is 0.15-0.45%, which places 103P among the most CO-depleted comets. Apparently this highly volatile species, whose abundance varies by a factor of ~50 among the comets observed to date, does not play a major role in producing the strong and temporally variable activity in 103P/Hartley. The CO emissions ","authors_text":"H. A. Weaver, M. F. A'Hearn, N. Dello Russo, P. D. Feldman, S. A. Stern","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-22T16:48:38Z","title":"The Carbon Monoxide Abundance in Comet 103P/Hartley during the EPOXI Flyby"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.4477","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":"sha256:4f698b18abfb0e57bdac769ebf0d982fbe9ae2c0bc59a0f2184a201dfcec53c9","target":"record","created_at":"2026-05-18T02:02:16Z","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":"9b2bc798130e7d7df9b689e57396e473e19c238e7dd26bedba42fbbd15afc2f3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2011-04-22T16:48:38Z","title_canon_sha256":"607279f13b2f55490d473ef9224bedc6e75b2cb4e4f017f43087b9862974f3ab"},"schema_version":"1.0","source":{"id":"1104.4477","kind":"arxiv","version":1}},"canonical_sha256":"a3d00fc5da0b281f9cc2870a50b5922cbaea56c32dbe2588bfb00a785cd99ff9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a3d00fc5da0b281f9cc2870a50b5922cbaea56c32dbe2588bfb00a785cd99ff9","first_computed_at":"2026-05-18T02:02:16.097732Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:02:16.097732Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eRv5zGQ0MUzIxemIwRX04Jj5jKfVGHB6Of3PS47PJQNxHldfhcsKEhJSwnhS9Z3T0O9KPeGYkRHKMbHzM+OfCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:02:16.098444Z","signed_message":"canonical_sha256_bytes"},"source_id":"1104.4477","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4f698b18abfb0e57bdac769ebf0d982fbe9ae2c0bc59a0f2184a201dfcec53c9","sha256:224eb205716e42208555b751f64742a22e72c45f88c07474c8d46a712271ac77"],"state_sha256":"25acbc6b24cf2a1708a46b64252a8f1739b745d1d615333f285283fbd279b045"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JcJG8CEauZhmzTY4ZsQIVlZp21R78Cx4WzyNfZtzgGSDrHCPmetsBbJ4DFUxq4fkq3VonhYhtmLdF0Rm05lWBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T23:32:52.516049Z","bundle_sha256":"51f7f5a22f6bf6816b77a6d1c81a715a6a6a8f36119eb0c231c7ce514e6a9ff1"}}