{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1996:6LJ5JSE6XF72HWVRPMWJJWRKT7","short_pith_number":"pith:6LJ5JSE6","canonical_record":{"source":{"id":"astro-ph/9605061","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-05-13T11:56:41Z","cross_cats_sorted":[],"title_canon_sha256":"40cc275392289f8e5eee3db77ac910514de3a9d0b65a510c812595a076064525","abstract_canon_sha256":"83e0263e9dd0f2a29d791729812226fe8b8ccd4bf3abb789b1768e680541ac31"},"schema_version":"1.0"},"canonical_sha256":"f2d3d4c89eb97fa3dab17b2c94da2a9fc4c63bacc13952b8c259209cbef7cc8c","source":{"kind":"arxiv","id":"astro-ph/9605061","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9605061","created_at":"2026-05-18T01:40:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9605061v1","created_at":"2026-05-18T01:40:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9605061","created_at":"2026-05-18T01:40:21Z"},{"alias_kind":"pith_short_12","alias_value":"6LJ5JSE6XF72","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"6LJ5JSE6XF72HWVR","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"6LJ5JSE6","created_at":"2026-05-18T12:25:47Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1996:6LJ5JSE6XF72HWVRPMWJJWRKT7","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/9605061","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"1996-05-13T11:56:41Z","cross_cats_sorted":[],"title_canon_sha256":"40cc275392289f8e5eee3db77ac910514de3a9d0b65a510c812595a076064525","abstract_canon_sha256":"83e0263e9dd0f2a29d791729812226fe8b8ccd4bf3abb789b1768e680541ac31"},"schema_version":"1.0"},"canonical_sha256":"f2d3d4c89eb97fa3dab17b2c94da2a9fc4c63bacc13952b8c259209cbef7cc8c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:21.303515Z","signature_b64":"boz8pB7ODW4gmv9codB0vWL8pZb8tK24BDmNYAdHuXnX+z/XKOH8yC+mQkKzRELQhgTI9Gz96d76XA+nb/jXAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f2d3d4c89eb97fa3dab17b2c94da2a9fc4c63bacc13952b8c259209cbef7cc8c","last_reissued_at":"2026-05-18T01:40:21.302833Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:21.302833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/9605061","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":"2026-05-18T01:40:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iSNbeSmiVjai503lDYyHEqhEmnNaM0uqwZPgbDLYgcgPn189lxU10+dWh8+m2ZERsojAdAv2k18FRS2QNz25Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T12:53:31.854100Z"},"content_sha256":"3b59a9a62af9196729e4517658e393b14092eb8d0907170af146ec3e853c00bd","schema_version":"1.0","event_id":"sha256:3b59a9a62af9196729e4517658e393b14092eb8d0907170af146ec3e853c00bd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1996:6LJ5JSE6XF72HWVRPMWJJWRKT7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Made-to-measure N-body systems","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"D. Syer (MPA), S. Tremaine (CITA)","submitted_at":"1996-05-13T11:56:41Z","abstract_excerpt":"We describe an algorithm for constructing N-body realisations of equilibrium stellar systems. The algorithm complements existing orbit-based modelling techniques using linear programming or other optimization algorithms. The equilibria are constructed by integrating an N-body system while slowly adjusting the masses of the particles until the time-averaged density field and other observables converge to a prescribed value. The procedure can be arranged to maximise a linear combination of the entropy of the system and the $\\chi^2$ statistic for the observables. The equilibria so produced may be"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9605061","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":"2026-05-18T01:40:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mtwoj+6g4x17TgGmMO09JzcPb3VYgG4brENJ9MXl+KqcW4hb3CaeOxxLCRKE0sqU+qiP+63bI+qPva+zDUJiBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T12:53:31.854457Z"},"content_sha256":"a4ed5541032f019cc1f9acf42e81ab1631b36d23c927cdfd99cc6785740de2b0","schema_version":"1.0","event_id":"sha256:a4ed5541032f019cc1f9acf42e81ab1631b36d23c927cdfd99cc6785740de2b0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7/bundle.json","state_url":"https://pith.science/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7/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":"2026-06-27T12:53:31Z","links":{"resolver":"https://pith.science/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7","bundle":"https://pith.science/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7/bundle.json","state":"https://pith.science/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6LJ5JSE6XF72HWVRPMWJJWRKT7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:6LJ5JSE6XF72HWVRPMWJJWRKT7","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":"83e0263e9dd0f2a29d791729812226fe8b8ccd4bf3abb789b1768e680541ac31","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-05-13T11:56:41Z","title_canon_sha256":"40cc275392289f8e5eee3db77ac910514de3a9d0b65a510c812595a076064525"},"schema_version":"1.0","source":{"id":"astro-ph/9605061","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/9605061","created_at":"2026-05-18T01:40:21Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/9605061v1","created_at":"2026-05-18T01:40:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/9605061","created_at":"2026-05-18T01:40:21Z"},{"alias_kind":"pith_short_12","alias_value":"6LJ5JSE6XF72","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_16","alias_value":"6LJ5JSE6XF72HWVR","created_at":"2026-05-18T12:25:47Z"},{"alias_kind":"pith_short_8","alias_value":"6LJ5JSE6","created_at":"2026-05-18T12:25:47Z"}],"graph_snapshots":[{"event_id":"sha256:a4ed5541032f019cc1f9acf42e81ab1631b36d23c927cdfd99cc6785740de2b0","target":"graph","created_at":"2026-05-18T01:40:21Z","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 describe an algorithm for constructing N-body realisations of equilibrium stellar systems. The algorithm complements existing orbit-based modelling techniques using linear programming or other optimization algorithms. The equilibria are constructed by integrating an N-body system while slowly adjusting the masses of the particles until the time-averaged density field and other observables converge to a prescribed value. The procedure can be arranged to maximise a linear combination of the entropy of the system and the $\\chi^2$ statistic for the observables. The equilibria so produced may be","authors_text":"D. Syer (MPA), S. Tremaine (CITA)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"1996-05-13T11:56:41Z","title":"Made-to-measure N-body systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9605061","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":"sha256:3b59a9a62af9196729e4517658e393b14092eb8d0907170af146ec3e853c00bd","target":"record","created_at":"2026-05-18T01:40:21Z","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":"83e0263e9dd0f2a29d791729812226fe8b8ccd4bf3abb789b1768e680541ac31","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"1996-05-13T11:56:41Z","title_canon_sha256":"40cc275392289f8e5eee3db77ac910514de3a9d0b65a510c812595a076064525"},"schema_version":"1.0","source":{"id":"astro-ph/9605061","kind":"arxiv","version":1}},"canonical_sha256":"f2d3d4c89eb97fa3dab17b2c94da2a9fc4c63bacc13952b8c259209cbef7cc8c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f2d3d4c89eb97fa3dab17b2c94da2a9fc4c63bacc13952b8c259209cbef7cc8c","first_computed_at":"2026-05-18T01:40:21.302833Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:21.302833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"boz8pB7ODW4gmv9codB0vWL8pZb8tK24BDmNYAdHuXnX+z/XKOH8yC+mQkKzRELQhgTI9Gz96d76XA+nb/jXAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:21.303515Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/9605061","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3b59a9a62af9196729e4517658e393b14092eb8d0907170af146ec3e853c00bd","sha256:a4ed5541032f019cc1f9acf42e81ab1631b36d23c927cdfd99cc6785740de2b0"],"state_sha256":"a7108cbcd6087ed2ac15165b224624d40b98fe068704117a46bdbd0f9e557594"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7SlMM0FL8PoPRs8gyaeZRp0vPHMcNKk9fWlJfik0+czSO1BLrF5fq/N9264KT9wDq2aGeHkufs8DYarEEPN9Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T12:53:31.856301Z","bundle_sha256":"89af6d3723b7ddab1ee945707e3dd9a874dce7146236dd0ef94e642719bc6ebd"}}