{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:BLGFRAWKK76IXNUSWUK35ERN36","short_pith_number":"pith:BLGFRAWK","canonical_record":{"source":{"id":"1512.00559","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-02T03:28:24Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"de0ad850d75c7de976407b4a251bab11dc8cab9be702363bbfa211c118211c76","abstract_canon_sha256":"aece4c12e5795b08e0a6e293de4d20165c5923d2a731d2de96252ba07be87e27"},"schema_version":"1.0"},"canonical_sha256":"0acc5882ca57fc8bb692b515be922ddfa65d8550fe2e9ce3fcba5462a97e1378","source":{"kind":"arxiv","id":"1512.00559","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00559","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00559v2","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00559","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"BLGFRAWKK76I","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BLGFRAWKK76IXNUS","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BLGFRAWK","created_at":"2026-05-18T12:29:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:BLGFRAWKK76IXNUSWUK35ERN36","target":"record","payload":{"canonical_record":{"source":{"id":"1512.00559","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-02T03:28:24Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"de0ad850d75c7de976407b4a251bab11dc8cab9be702363bbfa211c118211c76","abstract_canon_sha256":"aece4c12e5795b08e0a6e293de4d20165c5923d2a731d2de96252ba07be87e27"},"schema_version":"1.0"},"canonical_sha256":"0acc5882ca57fc8bb692b515be922ddfa65d8550fe2e9ce3fcba5462a97e1378","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:45.096689Z","signature_b64":"Fs/JwibKzKV7xqCQFwdlyCRutnV/bjMEW1cChzOrYsqmXt+yCYhee3OAu3esVYUVDpyzLDc+/mxLu0WKLwCRDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0acc5882ca57fc8bb692b515be922ddfa65d8550fe2e9ce3fcba5462a97e1378","last_reissued_at":"2026-05-18T01:16:45.095989Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:45.095989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.00559","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":"2026-05-18T01:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ITS3BzWd6cKV/WxXGTwluWi8GvbLrk6LqoDbqOwTqg2Eka7FssuZakU75YrdlnXyFgYJIH+BviGFJW2yOYc0Cg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:41:57.437670Z"},"content_sha256":"9cc77c3a542fdfee745f83449495079d1c8daa9213a2f160430dc913a551ea3b","schema_version":"1.0","event_id":"sha256:9cc77c3a542fdfee745f83449495079d1c8daa9213a2f160430dc913a551ea3b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:BLGFRAWKK76IXNUSWUK35ERN36","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dark-ages Reionization & Galaxy Formation Simulation I: The dynamical lives of high redshift galaxies","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Alan R. Duffy, Andrei Mesinger, Chris Power, Gregory B. Poole, Paul M. Geil, Paul W. Angel, Simon J. Mutch, Stuart B. Wyithe","submitted_at":"2015-12-02T03:28:24Z","abstract_excerpt":"We present the Dark-ages Reionization and Galaxy-formation Observables from Numerical Simulations (DRAGONS) program and Tiamat, the collisionless N-body simulation program upon which DRAGONS is built. The primary trait distinguishing Tiamat from other large simulation programs is its density of outputs at high redshift (100 from z=35 to z=5; roughly one every 10 Myr) enabling the construction of very accurate merger trees at an epoch when galaxy formation is rapid and mergers extremely frequent. We find that the friends-of-friends halo mass function agrees well with the prediction of Watson et"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00559","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":"2026-05-18T01:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zpFDF13a9jwFT8Gt9QKyOufMH122bwhU100hRAF3vxk6w4rdS0mXS7uUoUshNQ4uTL+8ycwrI1rMETubIgBbBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T13:41:57.438036Z"},"content_sha256":"8c0e581cc953a2d6e8207d651ef73a1e8d17d2f6e3247ed14afcdedf5f3a9093","schema_version":"1.0","event_id":"sha256:8c0e581cc953a2d6e8207d651ef73a1e8d17d2f6e3247ed14afcdedf5f3a9093"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BLGFRAWKK76IXNUSWUK35ERN36/bundle.json","state_url":"https://pith.science/pith/BLGFRAWKK76IXNUSWUK35ERN36/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BLGFRAWKK76IXNUSWUK35ERN36/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":"2026-05-27T13:41:57Z","links":{"resolver":"https://pith.science/pith/BLGFRAWKK76IXNUSWUK35ERN36","bundle":"https://pith.science/pith/BLGFRAWKK76IXNUSWUK35ERN36/bundle.json","state":"https://pith.science/pith/BLGFRAWKK76IXNUSWUK35ERN36/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BLGFRAWKK76IXNUSWUK35ERN36/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:BLGFRAWKK76IXNUSWUK35ERN36","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":"aece4c12e5795b08e0a6e293de4d20165c5923d2a731d2de96252ba07be87e27","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-02T03:28:24Z","title_canon_sha256":"de0ad850d75c7de976407b4a251bab11dc8cab9be702363bbfa211c118211c76"},"schema_version":"1.0","source":{"id":"1512.00559","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00559","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00559v2","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00559","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"BLGFRAWKK76I","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_16","alias_value":"BLGFRAWKK76IXNUS","created_at":"2026-05-18T12:29:14Z"},{"alias_kind":"pith_short_8","alias_value":"BLGFRAWK","created_at":"2026-05-18T12:29:14Z"}],"graph_snapshots":[{"event_id":"sha256:8c0e581cc953a2d6e8207d651ef73a1e8d17d2f6e3247ed14afcdedf5f3a9093","target":"graph","created_at":"2026-05-18T01:16:45Z","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 present the Dark-ages Reionization and Galaxy-formation Observables from Numerical Simulations (DRAGONS) program and Tiamat, the collisionless N-body simulation program upon which DRAGONS is built. The primary trait distinguishing Tiamat from other large simulation programs is its density of outputs at high redshift (100 from z=35 to z=5; roughly one every 10 Myr) enabling the construction of very accurate merger trees at an epoch when galaxy formation is rapid and mergers extremely frequent. We find that the friends-of-friends halo mass function agrees well with the prediction of Watson et","authors_text":"Alan R. Duffy, Andrei Mesinger, Chris Power, Gregory B. Poole, Paul M. Geil, Paul W. Angel, Simon J. Mutch, Stuart B. Wyithe","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-02T03:28:24Z","title":"Dark-ages Reionization & Galaxy Formation Simulation I: The dynamical lives of high redshift galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00559","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":"sha256:9cc77c3a542fdfee745f83449495079d1c8daa9213a2f160430dc913a551ea3b","target":"record","created_at":"2026-05-18T01:16:45Z","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":"aece4c12e5795b08e0a6e293de4d20165c5923d2a731d2de96252ba07be87e27","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-12-02T03:28:24Z","title_canon_sha256":"de0ad850d75c7de976407b4a251bab11dc8cab9be702363bbfa211c118211c76"},"schema_version":"1.0","source":{"id":"1512.00559","kind":"arxiv","version":2}},"canonical_sha256":"0acc5882ca57fc8bb692b515be922ddfa65d8550fe2e9ce3fcba5462a97e1378","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0acc5882ca57fc8bb692b515be922ddfa65d8550fe2e9ce3fcba5462a97e1378","first_computed_at":"2026-05-18T01:16:45.095989Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:45.095989Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Fs/JwibKzKV7xqCQFwdlyCRutnV/bjMEW1cChzOrYsqmXt+yCYhee3OAu3esVYUVDpyzLDc+/mxLu0WKLwCRDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:45.096689Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.00559","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9cc77c3a542fdfee745f83449495079d1c8daa9213a2f160430dc913a551ea3b","sha256:8c0e581cc953a2d6e8207d651ef73a1e8d17d2f6e3247ed14afcdedf5f3a9093"],"state_sha256":"c8af8f442ad01dab811f5ab263ea71c05cb947b2d7ff870a325a334b6115c7d1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0PDgwojIPrUoo0pBUpsSDOf9D+OF/RHGKTf1e2/1GYf+AWVis5zvggZcNrP1vJDvKwOqCkskeDcDZBUUe84qBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T13:41:57.440457Z","bundle_sha256":"8c7f53cea56e2792563d20e615244011099ae78a4b1b42be1c9324069ff4d352"}}