{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:C3MVK7IG4SECWHYEIBGZ46S34R","short_pith_number":"pith:C3MVK7IG","canonical_record":{"source":{"id":"1811.02864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-07T12:58:42Z","cross_cats_sorted":[],"title_canon_sha256":"5668abf679204352841f5dd0d94aaca67aaf6c70d44e052fc7bd16cba8c21751","abstract_canon_sha256":"fe1b3df1e36fef8b33400f6b2a8fb3e9f3add921f10837c0d989fd7249c8ab8f"},"schema_version":"1.0"},"canonical_sha256":"16d9557d06e4882b1f04404d9e7a5be471871d5b3ca2a75a12e994ac97e940fa","source":{"kind":"arxiv","id":"1811.02864","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02864","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02864v1","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02864","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"C3MVK7IG4SEC","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"C3MVK7IG4SECWHYE","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"C3MVK7IG","created_at":"2026-05-18T12:32:16Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:C3MVK7IG4SECWHYEIBGZ46S34R","target":"record","payload":{"canonical_record":{"source":{"id":"1811.02864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-07T12:58:42Z","cross_cats_sorted":[],"title_canon_sha256":"5668abf679204352841f5dd0d94aaca67aaf6c70d44e052fc7bd16cba8c21751","abstract_canon_sha256":"fe1b3df1e36fef8b33400f6b2a8fb3e9f3add921f10837c0d989fd7249c8ab8f"},"schema_version":"1.0"},"canonical_sha256":"16d9557d06e4882b1f04404d9e7a5be471871d5b3ca2a75a12e994ac97e940fa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:59:48.562412Z","signature_b64":"7LXAAAQ63gBKNXQCRXnokmRy9b0GtGcg6cIvF8pjCRIghNi0q48W7EpGGfZzAJrZStFdRIOQs0bbOjNyqfsqCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16d9557d06e4882b1f04404d9e7a5be471871d5b3ca2a75a12e994ac97e940fa","last_reissued_at":"2026-05-17T23:59:48.561941Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:59:48.561941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1811.02864","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":"2026-05-17T23:59:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f0SbcXd8K9B74M4sX+dleBVaA6yJmlHT/5iiz89OFfrx20Q6OYGH75sK3lzyI5tajhPU9zfUqGq73+133roCDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:16:59.151201Z"},"content_sha256":"d64826871fa52d5410f46283d19ad4c83a53149499e2001c60164aeccce810c3","schema_version":"1.0","event_id":"sha256:d64826871fa52d5410f46283d19ad4c83a53149499e2001c60164aeccce810c3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:C3MVK7IG4SECWHYEIBGZ46S34R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the shape and completeness of the column density probability distribution function of molecular clouds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bastian K\\\"ortgen, Christoph Federrath, Robi Banerjee","submitted_at":"2018-11-07T12:58:42Z","abstract_excerpt":"Both observational and theoretical research over the past decade has demonstrated that the probability distribution function (PDF) of the gas density in turbulent molecular clouds is a key ingredient for understanding star formation. It has recently been argued that the PDF of molecular clouds is a pure power-law distribution. It has been claimed that the log-normal part is ruled out when using only the part of the PDF up/down to which it is complete, that is where the column density contours are still closed. By using the results from high-resolution magnetohydrodynamical simulations of molec"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02864","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":"2026-05-17T23:59:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IRDUaCxkMte4Y/PsPBAb6phH0+OlVBsepAFPlO9dpBJcTnasbogLijel9p3YYwmGDzLjPQw4ngH3NWC8UnmhDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T23:16:59.151899Z"},"content_sha256":"746d149f6f328a683203b4e0506bac7157ce0048a9e6b021a204024e49946339","schema_version":"1.0","event_id":"sha256:746d149f6f328a683203b4e0506bac7157ce0048a9e6b021a204024e49946339"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C3MVK7IG4SECWHYEIBGZ46S34R/bundle.json","state_url":"https://pith.science/pith/C3MVK7IG4SECWHYEIBGZ46S34R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C3MVK7IG4SECWHYEIBGZ46S34R/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":"2026-06-04T23:16:59Z","links":{"resolver":"https://pith.science/pith/C3MVK7IG4SECWHYEIBGZ46S34R","bundle":"https://pith.science/pith/C3MVK7IG4SECWHYEIBGZ46S34R/bundle.json","state":"https://pith.science/pith/C3MVK7IG4SECWHYEIBGZ46S34R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C3MVK7IG4SECWHYEIBGZ46S34R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:C3MVK7IG4SECWHYEIBGZ46S34R","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":"fe1b3df1e36fef8b33400f6b2a8fb3e9f3add921f10837c0d989fd7249c8ab8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-07T12:58:42Z","title_canon_sha256":"5668abf679204352841f5dd0d94aaca67aaf6c70d44e052fc7bd16cba8c21751"},"schema_version":"1.0","source":{"id":"1811.02864","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1811.02864","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"arxiv_version","alias_value":"1811.02864v1","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.02864","created_at":"2026-05-17T23:59:48Z"},{"alias_kind":"pith_short_12","alias_value":"C3MVK7IG4SEC","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"C3MVK7IG4SECWHYE","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"C3MVK7IG","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:746d149f6f328a683203b4e0506bac7157ce0048a9e6b021a204024e49946339","target":"graph","created_at":"2026-05-17T23:59:48Z","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":"Both observational and theoretical research over the past decade has demonstrated that the probability distribution function (PDF) of the gas density in turbulent molecular clouds is a key ingredient for understanding star formation. It has recently been argued that the PDF of molecular clouds is a pure power-law distribution. It has been claimed that the log-normal part is ruled out when using only the part of the PDF up/down to which it is complete, that is where the column density contours are still closed. By using the results from high-resolution magnetohydrodynamical simulations of molec","authors_text":"Bastian K\\\"ortgen, Christoph Federrath, Robi Banerjee","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-07T12:58:42Z","title":"On the shape and completeness of the column density probability distribution function of molecular clouds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.02864","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:d64826871fa52d5410f46283d19ad4c83a53149499e2001c60164aeccce810c3","target":"record","created_at":"2026-05-17T23:59:48Z","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":"fe1b3df1e36fef8b33400f6b2a8fb3e9f3add921f10837c0d989fd7249c8ab8f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-11-07T12:58:42Z","title_canon_sha256":"5668abf679204352841f5dd0d94aaca67aaf6c70d44e052fc7bd16cba8c21751"},"schema_version":"1.0","source":{"id":"1811.02864","kind":"arxiv","version":1}},"canonical_sha256":"16d9557d06e4882b1f04404d9e7a5be471871d5b3ca2a75a12e994ac97e940fa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16d9557d06e4882b1f04404d9e7a5be471871d5b3ca2a75a12e994ac97e940fa","first_computed_at":"2026-05-17T23:59:48.561941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:59:48.561941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7LXAAAQ63gBKNXQCRXnokmRy9b0GtGcg6cIvF8pjCRIghNi0q48W7EpGGfZzAJrZStFdRIOQs0bbOjNyqfsqCw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:59:48.562412Z","signed_message":"canonical_sha256_bytes"},"source_id":"1811.02864","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d64826871fa52d5410f46283d19ad4c83a53149499e2001c60164aeccce810c3","sha256:746d149f6f328a683203b4e0506bac7157ce0048a9e6b021a204024e49946339"],"state_sha256":"386ba01a1ee1b6382b7a70473c9e03ffbb7a81558b7e2172e9d3a81df6c5510e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1B2vSpz+VFlUSPDc6e6I7iymIEIE4J4GfvhH9M3YnodUBuzjoBJx9pBwh0wOvgKQXI7HsoYY3lvma1VKscRBCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T23:16:59.155703Z","bundle_sha256":"ee648577f8fbc17794f0cb659f6211efb897d8770198ce7c6246abc45c2db0c5"}}