{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:U7X3A2Y7Q6TKJYGKXQWFQWL2VF","short_pith_number":"pith:U7X3A2Y7","canonical_record":{"source":{"id":"nucl-th/0212020","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2002-12-04T16:48:31Z","cross_cats_sorted":[],"title_canon_sha256":"d96e9664f7414aab76ff537671f667c698ddb87a1000769d8e9cf9f531133bc1","abstract_canon_sha256":"505ae3b5bda81c90f404fe201b27d4002cfc1b55fdbb6471bb983ba300164f54"},"schema_version":"1.0"},"canonical_sha256":"a7efb06b1f87a6a4e0cabc2c58597aa94cdc325bbba678c9b25071d4b2f817e0","source":{"kind":"arxiv","id":"nucl-th/0212020","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0212020","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0212020v2","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0212020","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"pith_short_12","alias_value":"U7X3A2Y7Q6TK","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"U7X3A2Y7Q6TKJYGK","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"U7X3A2Y7","created_at":"2026-05-18T12:25:51Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:U7X3A2Y7Q6TKJYGKXQWFQWL2VF","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-th/0212020","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2002-12-04T16:48:31Z","cross_cats_sorted":[],"title_canon_sha256":"d96e9664f7414aab76ff537671f667c698ddb87a1000769d8e9cf9f531133bc1","abstract_canon_sha256":"505ae3b5bda81c90f404fe201b27d4002cfc1b55fdbb6471bb983ba300164f54"},"schema_version":"1.0"},"canonical_sha256":"a7efb06b1f87a6a4e0cabc2c58597aa94cdc325bbba678c9b25071d4b2f817e0","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:35:32.365612Z","signature_b64":"2k114/mptUrTAj/AzCPFHT7Me+uwsmXBvrNEcWPDZuRlBWC/pMArgfhkxu7W355sBi+7qWqAV135rPX7F9U0Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a7efb06b1f87a6a4e0cabc2c58597aa94cdc325bbba678c9b25071d4b2f817e0","last_reissued_at":"2026-05-18T02:35:32.365233Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:35:32.365233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-th/0212020","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:35:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hLKKY0hbOm4Q9FYURX1ygaC2eyOctzD6n6Cs9JNysmk3G6CbYkk+1UbvXxsgNb8c1bscRD7owKYwjO11kl10DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T18:50:50.063378Z"},"content_sha256":"62990949e8fc464cabe3968f6453688f0a48659c6b833eea127d0f9fea9fb414","schema_version":"1.0","event_id":"sha256:62990949e8fc464cabe3968f6453688f0a48659c6b833eea127d0f9fea9fb414"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:U7X3A2Y7Q6TKJYGKXQWFQWL2VF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chiral symmetry and strangeness content in nuclear physics parametrized by a medium dependent bag constant","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"R. Aguirre","submitted_at":"2002-12-04T16:48:31Z","abstract_excerpt":"Non-perturbative QCD vacuum effects at finite density are parametrized by means of a bag constant $B$. It is extracted from a Nambu- Jona Lasinio model with two or three flavors. The parameter $B$ is used in an effective quark-meson coupling model to study the nuclear phenomenology. We examine the nucleon structure and the thermodynamical properties of symmetric nuclear matter, particular attention is paid to the symmetry energy and to the eventual phase transition to deconfined quark matter. An alternative sketch of the binding mechanism of symmetric nuclear matter emerges within this approac"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0212020","kind":"arxiv","version":2},"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":"2026-05-18T02:35:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PSlpZ/tj+dlR/4i3clcuVKuY0kk0Gsx4tt5AroaaKTVtI1BcHvgqFWHVtsfhat2Jtb+asbPQrcXT1S+WrYxbDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T18:50:50.064075Z"},"content_sha256":"e29f1ec2e6656b59ea093796f7fb0a5de659fabb465e2bc7de25e0d9b2be56f9","schema_version":"1.0","event_id":"sha256:e29f1ec2e6656b59ea093796f7fb0a5de659fabb465e2bc7de25e0d9b2be56f9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF/bundle.json","state_url":"https://pith.science/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF/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":"2026-06-08T18:50:50Z","links":{"resolver":"https://pith.science/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF","bundle":"https://pith.science/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF/bundle.json","state":"https://pith.science/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U7X3A2Y7Q6TKJYGKXQWFQWL2VF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:U7X3A2Y7Q6TKJYGKXQWFQWL2VF","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":"505ae3b5bda81c90f404fe201b27d4002cfc1b55fdbb6471bb983ba300164f54","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2002-12-04T16:48:31Z","title_canon_sha256":"d96e9664f7414aab76ff537671f667c698ddb87a1000769d8e9cf9f531133bc1"},"schema_version":"1.0","source":{"id":"nucl-th/0212020","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/0212020","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/0212020v2","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/0212020","created_at":"2026-05-18T02:35:32Z"},{"alias_kind":"pith_short_12","alias_value":"U7X3A2Y7Q6TK","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_16","alias_value":"U7X3A2Y7Q6TKJYGK","created_at":"2026-05-18T12:25:51Z"},{"alias_kind":"pith_short_8","alias_value":"U7X3A2Y7","created_at":"2026-05-18T12:25:51Z"}],"graph_snapshots":[{"event_id":"sha256:e29f1ec2e6656b59ea093796f7fb0a5de659fabb465e2bc7de25e0d9b2be56f9","target":"graph","created_at":"2026-05-18T02:35:32Z","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":"Non-perturbative QCD vacuum effects at finite density are parametrized by means of a bag constant $B$. It is extracted from a Nambu- Jona Lasinio model with two or three flavors. The parameter $B$ is used in an effective quark-meson coupling model to study the nuclear phenomenology. We examine the nucleon structure and the thermodynamical properties of symmetric nuclear matter, particular attention is paid to the symmetry energy and to the eventual phase transition to deconfined quark matter. An alternative sketch of the binding mechanism of symmetric nuclear matter emerges within this approac","authors_text":"R. Aguirre","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2002-12-04T16:48:31Z","title":"Chiral symmetry and strangeness content in nuclear physics parametrized by a medium dependent bag constant"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/0212020","kind":"arxiv","version":2},"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":"sha256:62990949e8fc464cabe3968f6453688f0a48659c6b833eea127d0f9fea9fb414","target":"record","created_at":"2026-05-18T02:35:32Z","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":"505ae3b5bda81c90f404fe201b27d4002cfc1b55fdbb6471bb983ba300164f54","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2002-12-04T16:48:31Z","title_canon_sha256":"d96e9664f7414aab76ff537671f667c698ddb87a1000769d8e9cf9f531133bc1"},"schema_version":"1.0","source":{"id":"nucl-th/0212020","kind":"arxiv","version":2}},"canonical_sha256":"a7efb06b1f87a6a4e0cabc2c58597aa94cdc325bbba678c9b25071d4b2f817e0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a7efb06b1f87a6a4e0cabc2c58597aa94cdc325bbba678c9b25071d4b2f817e0","first_computed_at":"2026-05-18T02:35:32.365233Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:35:32.365233Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2k114/mptUrTAj/AzCPFHT7Me+uwsmXBvrNEcWPDZuRlBWC/pMArgfhkxu7W355sBi+7qWqAV135rPX7F9U0Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:35:32.365612Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/0212020","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:62990949e8fc464cabe3968f6453688f0a48659c6b833eea127d0f9fea9fb414","sha256:e29f1ec2e6656b59ea093796f7fb0a5de659fabb465e2bc7de25e0d9b2be56f9"],"state_sha256":"fbf87fe3094eaac3fa2766e9475d3ad2eae06fe24ffd9160dcee496beb03df0c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UTe9o68JYONwneq6a5uME72foGUrDghGAj2lwMWUCclxvNAu/ernRoUCP++YGHSxesMCNLNkuFhKZMOP5ABIDQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T18:50:50.068028Z","bundle_sha256":"4543713ccefde0974543877cbe89a9310c4df745a8e335dbca99f0477f251a3a"}}