{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VOYBM2K34XHTJEBZ7DZQ66USZK","short_pith_number":"pith:VOYBM2K3","canonical_record":{"source":{"id":"1205.1236","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-06T18:37:52Z","cross_cats_sorted":[],"title_canon_sha256":"15fc05367276e0afa44932c5c514ff435648e09fd57f66144277f400d6d50af5","abstract_canon_sha256":"96d84dce8381f5df8c072fc2c48cb7443fc47a6b3e77d1823c4bd42a65c192b7"},"schema_version":"1.0"},"canonical_sha256":"abb016695be5cf349039f8f30f7a92caae2830d8c3f8dc166305a6328e0e2b76","source":{"kind":"arxiv","id":"1205.1236","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1236","created_at":"2026-05-18T01:57:37Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1236v2","created_at":"2026-05-18T01:57:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1236","created_at":"2026-05-18T01:57:37Z"},{"alias_kind":"pith_short_12","alias_value":"VOYBM2K34XHT","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VOYBM2K34XHTJEBZ","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VOYBM2K3","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VOYBM2K34XHTJEBZ7DZQ66USZK","target":"record","payload":{"canonical_record":{"source":{"id":"1205.1236","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-06T18:37:52Z","cross_cats_sorted":[],"title_canon_sha256":"15fc05367276e0afa44932c5c514ff435648e09fd57f66144277f400d6d50af5","abstract_canon_sha256":"96d84dce8381f5df8c072fc2c48cb7443fc47a6b3e77d1823c4bd42a65c192b7"},"schema_version":"1.0"},"canonical_sha256":"abb016695be5cf349039f8f30f7a92caae2830d8c3f8dc166305a6328e0e2b76","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:57:37.593055Z","signature_b64":"eylhtQtq5lb4Y3te9WRS5drbti4TjS4VHnyMw1Vg6qemqvZ2Br48cY9Kb33Hzu4bCC0wkbvtwvnGYpA2VNG4Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"abb016695be5cf349039f8f30f7a92caae2830d8c3f8dc166305a6328e0e2b76","last_reissued_at":"2026-05-18T01:57:37.592431Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:57:37.592431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.1236","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":"2026-05-18T01:57:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gt5l1gBNcloBSTjG1tQ29oyPOwsD7Xj1/Qge3507zVR9ZBhxmpHASaokEtSR6NuoI4MZORXC+IwrA8AvsRFUAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T19:46:26.353053Z"},"content_sha256":"52db80118c9d0235e03e69cb9293217ee76ba229e9aad5931552e97fb27c756d","schema_version":"1.0","event_id":"sha256:52db80118c9d0235e03e69cb9293217ee76ba229e9aad5931552e97fb27c756d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VOYBM2K34XHTJEBZ7DZQ66USZK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Self-force as probe of internal structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Eric Poisson, Soichiro Isoyama","submitted_at":"2012-05-06T18:37:52Z","abstract_excerpt":"The self-force acting on a (scalar or electric) charge held in place outside a massive body contains information about the body's composition, and can therefore be used as a probe of internal structure. We explore this theme by computing the (scalar or electromagnetic) self-force when the body is a spherical ball of perfect fluid in hydrostatic equilibrium, under the assumption that its rest-mass density and pressure are related by a polytropic equation of state. The body is strongly self-gravitating, and all computations are performed in exact general relativity. The dependence on internal st"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1236","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":"2026-05-18T01:57:37Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5qiQE7IW3oV7V7bOs7pCqfD65Lhv4KM4jafusHqAaAm413OAh9cew6/T+BvpysZSXWoeKzLhkfB4WeCM+RXaDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T19:46:26.353516Z"},"content_sha256":"5d97849bd33466388e4d0ea3dbf2c0cd3ea40025700e0272aa77d1eed1371df1","schema_version":"1.0","event_id":"sha256:5d97849bd33466388e4d0ea3dbf2c0cd3ea40025700e0272aa77d1eed1371df1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VOYBM2K34XHTJEBZ7DZQ66USZK/bundle.json","state_url":"https://pith.science/pith/VOYBM2K34XHTJEBZ7DZQ66USZK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VOYBM2K34XHTJEBZ7DZQ66USZK/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":"2026-08-05T19:46:26Z","links":{"resolver":"https://pith.science/pith/VOYBM2K34XHTJEBZ7DZQ66USZK","bundle":"https://pith.science/pith/VOYBM2K34XHTJEBZ7DZQ66USZK/bundle.json","state":"https://pith.science/pith/VOYBM2K34XHTJEBZ7DZQ66USZK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VOYBM2K34XHTJEBZ7DZQ66USZK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VOYBM2K34XHTJEBZ7DZQ66USZK","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":"96d84dce8381f5df8c072fc2c48cb7443fc47a6b3e77d1823c4bd42a65c192b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-06T18:37:52Z","title_canon_sha256":"15fc05367276e0afa44932c5c514ff435648e09fd57f66144277f400d6d50af5"},"schema_version":"1.0","source":{"id":"1205.1236","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1236","created_at":"2026-05-18T01:57:37Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1236v2","created_at":"2026-05-18T01:57:37Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1236","created_at":"2026-05-18T01:57:37Z"},{"alias_kind":"pith_short_12","alias_value":"VOYBM2K34XHT","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VOYBM2K34XHTJEBZ","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VOYBM2K3","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:5d97849bd33466388e4d0ea3dbf2c0cd3ea40025700e0272aa77d1eed1371df1","target":"graph","created_at":"2026-05-18T01:57:37Z","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 self-force acting on a (scalar or electric) charge held in place outside a massive body contains information about the body's composition, and can therefore be used as a probe of internal structure. We explore this theme by computing the (scalar or electromagnetic) self-force when the body is a spherical ball of perfect fluid in hydrostatic equilibrium, under the assumption that its rest-mass density and pressure are related by a polytropic equation of state. The body is strongly self-gravitating, and all computations are performed in exact general relativity. The dependence on internal st","authors_text":"Eric Poisson, Soichiro Isoyama","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-06T18:37:52Z","title":"Self-force as probe of internal structure"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1236","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":"sha256:52db80118c9d0235e03e69cb9293217ee76ba229e9aad5931552e97fb27c756d","target":"record","created_at":"2026-05-18T01:57:37Z","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":"96d84dce8381f5df8c072fc2c48cb7443fc47a6b3e77d1823c4bd42a65c192b7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-06T18:37:52Z","title_canon_sha256":"15fc05367276e0afa44932c5c514ff435648e09fd57f66144277f400d6d50af5"},"schema_version":"1.0","source":{"id":"1205.1236","kind":"arxiv","version":2}},"canonical_sha256":"abb016695be5cf349039f8f30f7a92caae2830d8c3f8dc166305a6328e0e2b76","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"abb016695be5cf349039f8f30f7a92caae2830d8c3f8dc166305a6328e0e2b76","first_computed_at":"2026-05-18T01:57:37.592431Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:57:37.592431Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eylhtQtq5lb4Y3te9WRS5drbti4TjS4VHnyMw1Vg6qemqvZ2Br48cY9Kb33Hzu4bCC0wkbvtwvnGYpA2VNG4Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:57:37.593055Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.1236","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52db80118c9d0235e03e69cb9293217ee76ba229e9aad5931552e97fb27c756d","sha256:5d97849bd33466388e4d0ea3dbf2c0cd3ea40025700e0272aa77d1eed1371df1"],"state_sha256":"5c5d7f7235821afead44d4a4257da912388ad75c06865efa377de1aed33d2d32"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TwwgkKJmHJtNNvBUjGVj9g7+Kww5oBoFeQOfyx0aVbjEjPw1qwPbUGxVF9G+DLzMvoHEvwuWUIbqvCz5EZ4hAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T19:46:26.357524Z","bundle_sha256":"ef23b9740ff7accf66aa4c660bc58d3aea31254c509904089c70a5352ad91f33"}}