{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:VEUGO6EZWSNOPPBEEKRJ2UQXBU","short_pith_number":"pith:VEUGO6EZ","canonical_record":{"source":{"id":"0905.4156","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-05-26T10:37:36Z","cross_cats_sorted":[],"title_canon_sha256":"913f8401b71f68725912b5915d318e72bea246d27f2f6e373fd1adb7fe4dd0df","abstract_canon_sha256":"92bc1e1e8bb4c3d437f84a8ab0d81470dd45eb041168d1bef9e01731dbed2b91"},"schema_version":"1.0"},"canonical_sha256":"a928677899b49ae7bc2422a29d52170d267ff8ccf1ae5112f2da54146ecd9db8","source":{"kind":"arxiv","id":"0905.4156","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.4156","created_at":"2026-05-18T02:34:46Z"},{"alias_kind":"arxiv_version","alias_value":"0905.4156v2","created_at":"2026-05-18T02:34:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.4156","created_at":"2026-05-18T02:34:46Z"},{"alias_kind":"pith_short_12","alias_value":"VEUGO6EZWSNO","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VEUGO6EZWSNOPPBE","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VEUGO6EZ","created_at":"2026-05-18T12:26:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:VEUGO6EZWSNOPPBEEKRJ2UQXBU","target":"record","payload":{"canonical_record":{"source":{"id":"0905.4156","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-05-26T10:37:36Z","cross_cats_sorted":[],"title_canon_sha256":"913f8401b71f68725912b5915d318e72bea246d27f2f6e373fd1adb7fe4dd0df","abstract_canon_sha256":"92bc1e1e8bb4c3d437f84a8ab0d81470dd45eb041168d1bef9e01731dbed2b91"},"schema_version":"1.0"},"canonical_sha256":"a928677899b49ae7bc2422a29d52170d267ff8ccf1ae5112f2da54146ecd9db8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:34:46.184625Z","signature_b64":"8YrVS232bhP5NvLcIGOot4se7UbmTwJsH4hBgU6hVbbl6dc+MMRf9BaRZOhCXQy4thQV6GEoLO4lGzmSQVtJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a928677899b49ae7bc2422a29d52170d267ff8ccf1ae5112f2da54146ecd9db8","last_reissued_at":"2026-05-18T02:34:46.184075Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:34:46.184075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.4156","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":"2026-05-18T02:34:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4X+0hCQcrdCrufGaWOcZHgLnxvnFMCQ54M0C3fNyQ7+Vk/IzYgjJvUTEptcs1QPVZMlQ1q5R3+quWcwCCPKgCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:48:05.717044Z"},"content_sha256":"8a934aaa4a92326a3ead6e562d9febd695b500f8f04a6cf3a6986fb1710a1133","schema_version":"1.0","event_id":"sha256:8a934aaa4a92326a3ead6e562d9febd695b500f8f04a6cf3a6986fb1710a1133"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:VEUGO6EZWSNOPPBEEKRJ2UQXBU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Where is the best site on Earth? Domes A, B, C and F, and Ridges A and B","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Craig Kulesa, David M. Winker, Guiping Liu, John W.V. Storey, Jon S. Lawrence, Michael C.B. Ashley, Patrick Minnis, Seiji Kato, Will Saunders","submitted_at":"2009-05-26T10:37:36Z","abstract_excerpt":"The Antarctic plateau contains the best sites on earth for many forms of astronomy, but none of the existing bases was selected with astronomy as the primary motivation. In this article, we try to systematically compare the merits of potential observatory sites.We include South Pole, Domes A, C, and F, and also Ridge B (running northeast from Dome A), and what we call \"Ridge A\" (running southwest from Dome A). Our analysis combines satellite data, published results, and atmospheric models, to compare the boundary layer, weather, aurorae, airglow, precipitable water vapor, thermal sky emission,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.4156","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":"2026-05-18T02:34:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tn3Z5gVcjKKroF8s0Cj8tAs+mbsLVX0Wzw6mH0xwbidgfKIaM0uJ+HyGXRNAoYCI/kbGdsDlEfocEQ8olt2yBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T20:48:05.717740Z"},"content_sha256":"9e0a237f3abbab4a6861ef71944b700bb90483c8fc3eee05bff7d0a4c7496e7e","schema_version":"1.0","event_id":"sha256:9e0a237f3abbab4a6861ef71944b700bb90483c8fc3eee05bff7d0a4c7496e7e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU/bundle.json","state_url":"https://pith.science/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU/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":"2026-05-25T20:48:05Z","links":{"resolver":"https://pith.science/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU","bundle":"https://pith.science/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU/bundle.json","state":"https://pith.science/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VEUGO6EZWSNOPPBEEKRJ2UQXBU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:VEUGO6EZWSNOPPBEEKRJ2UQXBU","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":"92bc1e1e8bb4c3d437f84a8ab0d81470dd45eb041168d1bef9e01731dbed2b91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-05-26T10:37:36Z","title_canon_sha256":"913f8401b71f68725912b5915d318e72bea246d27f2f6e373fd1adb7fe4dd0df"},"schema_version":"1.0","source":{"id":"0905.4156","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.4156","created_at":"2026-05-18T02:34:46Z"},{"alias_kind":"arxiv_version","alias_value":"0905.4156v2","created_at":"2026-05-18T02:34:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.4156","created_at":"2026-05-18T02:34:46Z"},{"alias_kind":"pith_short_12","alias_value":"VEUGO6EZWSNO","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_16","alias_value":"VEUGO6EZWSNOPPBE","created_at":"2026-05-18T12:26:02Z"},{"alias_kind":"pith_short_8","alias_value":"VEUGO6EZ","created_at":"2026-05-18T12:26:02Z"}],"graph_snapshots":[{"event_id":"sha256:9e0a237f3abbab4a6861ef71944b700bb90483c8fc3eee05bff7d0a4c7496e7e","target":"graph","created_at":"2026-05-18T02:34:46Z","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 Antarctic plateau contains the best sites on earth for many forms of astronomy, but none of the existing bases was selected with astronomy as the primary motivation. In this article, we try to systematically compare the merits of potential observatory sites.We include South Pole, Domes A, C, and F, and also Ridge B (running northeast from Dome A), and what we call \"Ridge A\" (running southwest from Dome A). Our analysis combines satellite data, published results, and atmospheric models, to compare the boundary layer, weather, aurorae, airglow, precipitable water vapor, thermal sky emission,","authors_text":"Craig Kulesa, David M. Winker, Guiping Liu, John W.V. Storey, Jon S. Lawrence, Michael C.B. Ashley, Patrick Minnis, Seiji Kato, Will Saunders","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-05-26T10:37:36Z","title":"Where is the best site on Earth? Domes A, B, C and F, and Ridges A and B"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.4156","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":"sha256:8a934aaa4a92326a3ead6e562d9febd695b500f8f04a6cf3a6986fb1710a1133","target":"record","created_at":"2026-05-18T02:34:46Z","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":"92bc1e1e8bb4c3d437f84a8ab0d81470dd45eb041168d1bef9e01731dbed2b91","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.IM","submitted_at":"2009-05-26T10:37:36Z","title_canon_sha256":"913f8401b71f68725912b5915d318e72bea246d27f2f6e373fd1adb7fe4dd0df"},"schema_version":"1.0","source":{"id":"0905.4156","kind":"arxiv","version":2}},"canonical_sha256":"a928677899b49ae7bc2422a29d52170d267ff8ccf1ae5112f2da54146ecd9db8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a928677899b49ae7bc2422a29d52170d267ff8ccf1ae5112f2da54146ecd9db8","first_computed_at":"2026-05-18T02:34:46.184075Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:34:46.184075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8YrVS232bhP5NvLcIGOot4se7UbmTwJsH4hBgU6hVbbl6dc+MMRf9BaRZOhCXQy4thQV6GEoLO4lGzmSQVtJDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:34:46.184625Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.4156","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8a934aaa4a92326a3ead6e562d9febd695b500f8f04a6cf3a6986fb1710a1133","sha256:9e0a237f3abbab4a6861ef71944b700bb90483c8fc3eee05bff7d0a4c7496e7e"],"state_sha256":"613b3c289ba458a3aaf81e6e9fb3310ba2bcc1c59f43f77eb7a3151710f9bf03"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+0VxE4Qh/EYXi6Cjiy2P8MQFXMkO8/pFns63O3toI9yudrq8e60t5xC2aDzhJbzxxGDOTieYDdwibtir2ImNAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T20:48:05.721972Z","bundle_sha256":"66e43a0822a1b1432dabea6546ca50e760d11468ed1919b1c671d0010093e65d"}}