{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:6ZOWN6BEOQWWQYZDEGVBYFULR5","short_pith_number":"pith:6ZOWN6BE","canonical_record":{"source":{"id":"0909.2736","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-15T08:01:43Z","cross_cats_sorted":[],"title_canon_sha256":"116e664f6e628e09cc7abc45193479332c7cbe63e66ec2f9108c48f4f59dee48","abstract_canon_sha256":"f052bff8f0f58ad9da31f585a4375f35c785850c19a6f129ab41cf7ef89a6091"},"schema_version":"1.0"},"canonical_sha256":"f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d","source":{"kind":"arxiv","id":"0909.2736","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2736","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2736v1","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2736","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"pith_short_12","alias_value":"6ZOWN6BEOQWW","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"pith_short_16","alias_value":"6ZOWN6BEOQWWQYZD","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"pith_short_8","alias_value":"6ZOWN6BE","created_at":"2026-07-04T15:49:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:6ZOWN6BEOQWWQYZDEGVBYFULR5","target":"record","payload":{"canonical_record":{"source":{"id":"0909.2736","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-15T08:01:43Z","cross_cats_sorted":[],"title_canon_sha256":"116e664f6e628e09cc7abc45193479332c7cbe63e66ec2f9108c48f4f59dee48","abstract_canon_sha256":"f052bff8f0f58ad9da31f585a4375f35c785850c19a6f129ab41cf7ef89a6091"},"schema_version":"1.0"},"canonical_sha256":"f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:49:43.773811Z","signature_b64":"BnT0X7xNWUIXzg4mafKFjnv5VcBOKSrJDbdmls8lxRjgEbiKHW5B+ffBYa3LgM8fwz6XpIkpRh29hsO9f18LAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d","last_reissued_at":"2026-07-04T15:49:43.773400Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:49:43.773400Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.2736","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":"2026-07-04T15:49:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"07fAvyr5ZOD7/Eq7M/CO054AmqNG5wsZ09Z/vYamX1V4xPVuZisKk/9tXaptPPU/F/ZNbofjT8YB5ZmY5WqFBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T03:18:35.971820Z"},"content_sha256":"15802ced0a63138e0999ce5bd099949355f51506e983c58618e252cd43f9f265","schema_version":"1.0","event_id":"sha256:15802ced0a63138e0999ce5bd099949355f51506e983c58618e252cd43f9f265"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:6ZOWN6BEOQWWQYZDEGVBYFULR5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Setting the normalcy level of HI properties in isolated galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"A. Bosma, D. Espada, E. Athanassoula, J. Sabater, J. Sulentic, L. Verdes-Montenegro, M. Yun, S. Leon, S. Verley, U. Lisenfeld, W. K. Huchtmeier","submitted_at":"2009-09-15T08:01:43Z","abstract_excerpt":"Studying the atomic gas (HI) properties of the most isolated galaxies is essential to quantify the effect that the environment exerts on this sensitive component of the interstellar medium. We observed and compiled HI data for a well defined sample of ~ 800 galaxies in the Catalog of Isolated Galaxies, as part of the AMIGA project (Analysis of the ISM in Isolated GAlaxies, http://amiga.iaa.es), which enlarges considerably previous samples used to quantify the HI deficiency in galaxies located in denser environments. By studying the shape of 182 HI profiles, we revisited the usually accepted re"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2736","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0909.2736/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:49:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kQIz5BOcvjwzqLmSaqYgOZADBc4B88izfCvxnlMDFHmmKyg+Ni4fu/b4qSFx3aG2/solSuB0TloDQtjcYDeHDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T03:18:35.972195Z"},"content_sha256":"daae2168170ba00289902aed6c5d68a6a9582bea2a49ae35c52a920b155d4f14","schema_version":"1.0","event_id":"sha256:daae2168170ba00289902aed6c5d68a6a9582bea2a49ae35c52a920b155d4f14"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5/bundle.json","state_url":"https://pith.science/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5/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":"2026-08-05T03:18:35Z","links":{"resolver":"https://pith.science/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5","bundle":"https://pith.science/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5/bundle.json","state":"https://pith.science/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6ZOWN6BEOQWWQYZDEGVBYFULR5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:6ZOWN6BEOQWWQYZDEGVBYFULR5","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":"f052bff8f0f58ad9da31f585a4375f35c785850c19a6f129ab41cf7ef89a6091","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-15T08:01:43Z","title_canon_sha256":"116e664f6e628e09cc7abc45193479332c7cbe63e66ec2f9108c48f4f59dee48"},"schema_version":"1.0","source":{"id":"0909.2736","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.2736","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"arxiv_version","alias_value":"0909.2736v1","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.2736","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"pith_short_12","alias_value":"6ZOWN6BEOQWW","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"pith_short_16","alias_value":"6ZOWN6BEOQWWQYZD","created_at":"2026-07-04T15:49:43Z"},{"alias_kind":"pith_short_8","alias_value":"6ZOWN6BE","created_at":"2026-07-04T15:49:43Z"}],"graph_snapshots":[{"event_id":"sha256:daae2168170ba00289902aed6c5d68a6a9582bea2a49ae35c52a920b155d4f14","target":"graph","created_at":"2026-07-04T15:49:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0909.2736/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Studying the atomic gas (HI) properties of the most isolated galaxies is essential to quantify the effect that the environment exerts on this sensitive component of the interstellar medium. We observed and compiled HI data for a well defined sample of ~ 800 galaxies in the Catalog of Isolated Galaxies, as part of the AMIGA project (Analysis of the ISM in Isolated GAlaxies, http://amiga.iaa.es), which enlarges considerably previous samples used to quantify the HI deficiency in galaxies located in denser environments. By studying the shape of 182 HI profiles, we revisited the usually accepted re","authors_text":"A. Bosma, D. Espada, E. Athanassoula, J. Sabater, J. Sulentic, L. Verdes-Montenegro, M. Yun, S. Leon, S. Verley, U. Lisenfeld, W. K. Huchtmeier","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-15T08:01:43Z","title":"Setting the normalcy level of HI properties in isolated galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.2736","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":"sha256:15802ced0a63138e0999ce5bd099949355f51506e983c58618e252cd43f9f265","target":"record","created_at":"2026-07-04T15:49:43Z","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":"f052bff8f0f58ad9da31f585a4375f35c785850c19a6f129ab41cf7ef89a6091","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2009-09-15T08:01:43Z","title_canon_sha256":"116e664f6e628e09cc7abc45193479332c7cbe63e66ec2f9108c48f4f59dee48"},"schema_version":"1.0","source":{"id":"0909.2736","kind":"arxiv","version":1}},"canonical_sha256":"f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f65d66f824742d68632321aa1c168b8f4972ccbad24f4ad5752f5cf436c7d91d","first_computed_at":"2026-07-04T15:49:43.773400Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:49:43.773400Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BnT0X7xNWUIXzg4mafKFjnv5VcBOKSrJDbdmls8lxRjgEbiKHW5B+ffBYa3LgM8fwz6XpIkpRh29hsO9f18LAA==","signature_status":"signed_v1","signed_at":"2026-07-04T15:49:43.773811Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.2736","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15802ced0a63138e0999ce5bd099949355f51506e983c58618e252cd43f9f265","sha256:daae2168170ba00289902aed6c5d68a6a9582bea2a49ae35c52a920b155d4f14"],"state_sha256":"bd56570262711456e63fac06842b2affa4316da421e03e64e5d41c8d54e85e28"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Sl5ZTrD6wMDcK2Tqnx6Xay65hwxPxFQgv35UaGZl/88F55vPjn4WniXw8810OS+NHTbBOoYiMOWIqMFVaDn1Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T03:18:35.974578Z","bundle_sha256":"877e88675af202183d93012a8e4d7a03acad18665c526ba9f66cb382048c1d44"}}