{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:IM4SCGH6G3R33L5QSITBREP3FP","short_pith_number":"pith:IM4SCGH6","canonical_record":{"source":{"id":"2606.26996","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-25T13:13:37Z","cross_cats_sorted":[],"title_canon_sha256":"9fbb1bd3aff6d99db5847f27926b723d2ffc554d89cf67696de4179d29458f74","abstract_canon_sha256":"62875cd08df060ae59a4ee4d788ccd0cf3d68e49b162f4cb829df79065838410"},"schema_version":"1.0"},"canonical_sha256":"43392118fe36e3bdafb092261891fb2bc6d0f7149027f1b2ff6469fb9b803097","source":{"kind":"arxiv","id":"2606.26996","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26996","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26996v1","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26996","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"pith_short_12","alias_value":"IM4SCGH6G3R3","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"pith_short_16","alias_value":"IM4SCGH6G3R33L5Q","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"pith_short_8","alias_value":"IM4SCGH6","created_at":"2026-06-26T01:16:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:IM4SCGH6G3R33L5QSITBREP3FP","target":"record","payload":{"canonical_record":{"source":{"id":"2606.26996","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-25T13:13:37Z","cross_cats_sorted":[],"title_canon_sha256":"9fbb1bd3aff6d99db5847f27926b723d2ffc554d89cf67696de4179d29458f74","abstract_canon_sha256":"62875cd08df060ae59a4ee4d788ccd0cf3d68e49b162f4cb829df79065838410"},"schema_version":"1.0"},"canonical_sha256":"43392118fe36e3bdafb092261891fb2bc6d0f7149027f1b2ff6469fb9b803097","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-26T01:16:06.232430Z","signature_b64":"8AQnhWMddm9wmZDUPu9nCUhdyL4EE9bxFnXb2v23Mlvu19l2OUph3j0B1HcR9cswaXcbcrUsL8R+Fb5VQXJgBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43392118fe36e3bdafb092261891fb2bc6d0f7149027f1b2ff6469fb9b803097","last_reissued_at":"2026-06-26T01:16:06.232022Z","signature_status":"signed_v1","first_computed_at":"2026-06-26T01:16:06.232022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.26996","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":"2026-06-26T01:16:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/OudpWGDeOjkW2uuYiBVfy6aqABXPdTxbH6oEz9q15Sd6t5G3quWSbZ1g7J/y8VxbzY2oxvBq1bsssW/++u1Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T16:55:31.518874Z"},"content_sha256":"f387a5eff3a8ee979ed566c64cdcc42eed5d0c5af81027b04a123d00966c246f","schema_version":"1.0","event_id":"sha256:f387a5eff3a8ee979ed566c64cdcc42eed5d0c5af81027b04a123d00966c246f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:IM4SCGH6G3R33L5QSITBREP3FP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"How to access astronomical observation facilities ?","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Micha\\\"el De Becker","submitted_at":"2026-06-25T13:13:37Z","abstract_excerpt":"Access to astronomical data is a central component of astrophysical research. The allocation of telescope time is organized on an international scale through a highly competitive process. Over the past decades, this framework has evolved toward an increasingly professionalized system, particularly in the context of calls for telescope time proposals issued by major agencies or organizations, where hundreds of projects may compete for selection. Preparing a telescope time proposal is a demanding task for which junior researchers are not always adequately prepared. Astrophysicists typically acqu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26996","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2606.26996/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-26T01:16:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8w/JXwyGfWa1/FvMZfCIA2UB0VoxlJZ5HI2nmSH02iq4IZkbu3muXZ4T/VxgFm8u9KrQgTpN+sHqPwtiXZ62Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-30T16:55:31.519396Z"},"content_sha256":"c0f0c811e2fe6803200fe58164017f60f1e6674341dbc19bfca0bcd6277c3496","schema_version":"1.0","event_id":"sha256:c0f0c811e2fe6803200fe58164017f60f1e6674341dbc19bfca0bcd6277c3496"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IM4SCGH6G3R33L5QSITBREP3FP/bundle.json","state_url":"https://pith.science/pith/IM4SCGH6G3R33L5QSITBREP3FP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IM4SCGH6G3R33L5QSITBREP3FP/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":"2026-06-30T16:55:31Z","links":{"resolver":"https://pith.science/pith/IM4SCGH6G3R33L5QSITBREP3FP","bundle":"https://pith.science/pith/IM4SCGH6G3R33L5QSITBREP3FP/bundle.json","state":"https://pith.science/pith/IM4SCGH6G3R33L5QSITBREP3FP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IM4SCGH6G3R33L5QSITBREP3FP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:IM4SCGH6G3R33L5QSITBREP3FP","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":"62875cd08df060ae59a4ee4d788ccd0cf3d68e49b162f4cb829df79065838410","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-25T13:13:37Z","title_canon_sha256":"9fbb1bd3aff6d99db5847f27926b723d2ffc554d89cf67696de4179d29458f74"},"schema_version":"1.0","source":{"id":"2606.26996","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.26996","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"arxiv_version","alias_value":"2606.26996v1","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.26996","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"pith_short_12","alias_value":"IM4SCGH6G3R3","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"pith_short_16","alias_value":"IM4SCGH6G3R33L5Q","created_at":"2026-06-26T01:16:06Z"},{"alias_kind":"pith_short_8","alias_value":"IM4SCGH6","created_at":"2026-06-26T01:16:06Z"}],"graph_snapshots":[{"event_id":"sha256:c0f0c811e2fe6803200fe58164017f60f1e6674341dbc19bfca0bcd6277c3496","target":"graph","created_at":"2026-06-26T01:16:06Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2606.26996/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Access to astronomical data is a central component of astrophysical research. The allocation of telescope time is organized on an international scale through a highly competitive process. Over the past decades, this framework has evolved toward an increasingly professionalized system, particularly in the context of calls for telescope time proposals issued by major agencies or organizations, where hundreds of projects may compete for selection. Preparing a telescope time proposal is a demanding task for which junior researchers are not always adequately prepared. Astrophysicists typically acqu","authors_text":"Micha\\\"el De Becker","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-25T13:13:37Z","title":"How to access astronomical observation facilities ?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.26996","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:f387a5eff3a8ee979ed566c64cdcc42eed5d0c5af81027b04a123d00966c246f","target":"record","created_at":"2026-06-26T01:16:06Z","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":"62875cd08df060ae59a4ee4d788ccd0cf3d68e49b162f4cb829df79065838410","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2026-06-25T13:13:37Z","title_canon_sha256":"9fbb1bd3aff6d99db5847f27926b723d2ffc554d89cf67696de4179d29458f74"},"schema_version":"1.0","source":{"id":"2606.26996","kind":"arxiv","version":1}},"canonical_sha256":"43392118fe36e3bdafb092261891fb2bc6d0f7149027f1b2ff6469fb9b803097","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43392118fe36e3bdafb092261891fb2bc6d0f7149027f1b2ff6469fb9b803097","first_computed_at":"2026-06-26T01:16:06.232022Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-26T01:16:06.232022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"8AQnhWMddm9wmZDUPu9nCUhdyL4EE9bxFnXb2v23Mlvu19l2OUph3j0B1HcR9cswaXcbcrUsL8R+Fb5VQXJgBg==","signature_status":"signed_v1","signed_at":"2026-06-26T01:16:06.232430Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.26996","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f387a5eff3a8ee979ed566c64cdcc42eed5d0c5af81027b04a123d00966c246f","sha256:c0f0c811e2fe6803200fe58164017f60f1e6674341dbc19bfca0bcd6277c3496"],"state_sha256":"975fcf7435fc08413dc601cc6b1808e5f8b67593b48257d9dae783138e089123"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UWHVSqbbPXsQPUuy2CxcbpE2UDD7y9qqG63B7mSzXzLsjE9qip23vVWGkgJfIJhj5Fe5iZU9cNClPXH7iBpTDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-30T16:55:31.521801Z","bundle_sha256":"e706e73114f925c35e744fad1a58040c1430e434056167b3b0323e1fca6223bd"}}