{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:JTOVUHAOIKKXOWFPQ5X4AVXO7W","short_pith_number":"pith:JTOVUHAO","canonical_record":{"source":{"id":"1210.1103","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-02T18:12:09Z","cross_cats_sorted":[],"title_canon_sha256":"411acd88ee63fdf2d4ca4ada7d7fc3ed9a22a8b247a9d76ba7139a3850baa29a","abstract_canon_sha256":"05b12b2857ab832d53d0d4612b9d05c2af88494f085b396164ea062cc0934bdf"},"schema_version":"1.0"},"canonical_sha256":"4cdd5a1c0e42957758af876fc056eefd9da0d0c3b5befe246ca6262c50f26004","source":{"kind":"arxiv","id":"1210.1103","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1103","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1103v1","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1103","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"pith_short_12","alias_value":"JTOVUHAOIKKX","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JTOVUHAOIKKXOWFP","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JTOVUHAO","created_at":"2026-05-18T12:27:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:JTOVUHAOIKKXOWFPQ5X4AVXO7W","target":"record","payload":{"canonical_record":{"source":{"id":"1210.1103","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-02T18:12:09Z","cross_cats_sorted":[],"title_canon_sha256":"411acd88ee63fdf2d4ca4ada7d7fc3ed9a22a8b247a9d76ba7139a3850baa29a","abstract_canon_sha256":"05b12b2857ab832d53d0d4612b9d05c2af88494f085b396164ea062cc0934bdf"},"schema_version":"1.0"},"canonical_sha256":"4cdd5a1c0e42957758af876fc056eefd9da0d0c3b5befe246ca6262c50f26004","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:54:11.100955Z","signature_b64":"7JBlW5lLv3cWnb3gH82rAZNoE4FnKJsToD5YMrIh7se1Yu10f4OB2fzJMfk19vNOvYNVegaXbToI3nX8k4csAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4cdd5a1c0e42957758af876fc056eefd9da0d0c3b5befe246ca6262c50f26004","last_reissued_at":"2026-05-18T01:54:11.100521Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:54:11.100521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1210.1103","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":"2026-05-18T01:54:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GS2Fo9aKYLJyJ+3/XUoNCfVKvOyrnCziqlUCZL8I+B2GEMuBfJQHs4koTny3kUN8Z/Yi/y0MLTGLpQ9bFsyhBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:40:15.744411Z"},"content_sha256":"b8f15299b56f617f42bca352b6e2b2bf54c86c2ef1f0ef1948bff0a13e79649b","schema_version":"1.0","event_id":"sha256:b8f15299b56f617f42bca352b6e2b2bf54c86c2ef1f0ef1948bff0a13e79649b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:JTOVUHAOIKKXOWFPQ5X4AVXO7W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Why don't clumps of cirrus dust gravitationally collapse?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Carl H. Gibson, N. Chandra Wickramasinghe, Rudolph E. Schild, Theo M. Nieuwenhuizen","submitted_at":"2012-10-02T18:12:09Z","abstract_excerpt":"We consider the Herschel-Planck infrared observations of presumed condensations of interstellar material at a measured temperature of approximately 14 K (Juvela et al., 2012), the triple point temperature of hydrogen. The standard picture is challenged that the material is cirrus-like clouds of ceramic dust responsible for Halo extinction of cosmological sources (Finkbeiner, Davis, and Schlegel 1999). Why would such dust clouds not collapse gravitationally to a point on a gravitational free-fall time scale of $10^8$ years? Why do the particles not collide and stick together, as is fundamental "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1103","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":"2026-05-18T01:54:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MqPJpx9I5FerRw8ZuTEpEpi+7OM3WZCbDUrpMN1zFzd5wPJ5N1rRpWZEcHQKTS6hkkB6VH8i5FxWHu+mIbbxBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T02:40:15.744763Z"},"content_sha256":"88b71a58f48180e450c8570f681d46b4f1cfbd12ca57a9e147516fd1f2898103","schema_version":"1.0","event_id":"sha256:88b71a58f48180e450c8570f681d46b4f1cfbd12ca57a9e147516fd1f2898103"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W/bundle.json","state_url":"https://pith.science/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W/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":"2026-05-28T02:40:15Z","links":{"resolver":"https://pith.science/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W","bundle":"https://pith.science/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W/bundle.json","state":"https://pith.science/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JTOVUHAOIKKXOWFPQ5X4AVXO7W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:JTOVUHAOIKKXOWFPQ5X4AVXO7W","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":"05b12b2857ab832d53d0d4612b9d05c2af88494f085b396164ea062cc0934bdf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-02T18:12:09Z","title_canon_sha256":"411acd88ee63fdf2d4ca4ada7d7fc3ed9a22a8b247a9d76ba7139a3850baa29a"},"schema_version":"1.0","source":{"id":"1210.1103","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1210.1103","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"arxiv_version","alias_value":"1210.1103v1","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1210.1103","created_at":"2026-05-18T01:54:11Z"},{"alias_kind":"pith_short_12","alias_value":"JTOVUHAOIKKX","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_16","alias_value":"JTOVUHAOIKKXOWFP","created_at":"2026-05-18T12:27:11Z"},{"alias_kind":"pith_short_8","alias_value":"JTOVUHAO","created_at":"2026-05-18T12:27:11Z"}],"graph_snapshots":[{"event_id":"sha256:88b71a58f48180e450c8570f681d46b4f1cfbd12ca57a9e147516fd1f2898103","target":"graph","created_at":"2026-05-18T01:54:11Z","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 consider the Herschel-Planck infrared observations of presumed condensations of interstellar material at a measured temperature of approximately 14 K (Juvela et al., 2012), the triple point temperature of hydrogen. The standard picture is challenged that the material is cirrus-like clouds of ceramic dust responsible for Halo extinction of cosmological sources (Finkbeiner, Davis, and Schlegel 1999). Why would such dust clouds not collapse gravitationally to a point on a gravitational free-fall time scale of $10^8$ years? Why do the particles not collide and stick together, as is fundamental ","authors_text":"Carl H. Gibson, N. Chandra Wickramasinghe, Rudolph E. Schild, Theo M. Nieuwenhuizen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-02T18:12:09Z","title":"Why don't clumps of cirrus dust gravitationally collapse?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1210.1103","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:b8f15299b56f617f42bca352b6e2b2bf54c86c2ef1f0ef1948bff0a13e79649b","target":"record","created_at":"2026-05-18T01:54:11Z","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":"05b12b2857ab832d53d0d4612b9d05c2af88494f085b396164ea062cc0934bdf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-10-02T18:12:09Z","title_canon_sha256":"411acd88ee63fdf2d4ca4ada7d7fc3ed9a22a8b247a9d76ba7139a3850baa29a"},"schema_version":"1.0","source":{"id":"1210.1103","kind":"arxiv","version":1}},"canonical_sha256":"4cdd5a1c0e42957758af876fc056eefd9da0d0c3b5befe246ca6262c50f26004","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4cdd5a1c0e42957758af876fc056eefd9da0d0c3b5befe246ca6262c50f26004","first_computed_at":"2026-05-18T01:54:11.100521Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:54:11.100521Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7JBlW5lLv3cWnb3gH82rAZNoE4FnKJsToD5YMrIh7se1Yu10f4OB2fzJMfk19vNOvYNVegaXbToI3nX8k4csAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:54:11.100955Z","signed_message":"canonical_sha256_bytes"},"source_id":"1210.1103","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b8f15299b56f617f42bca352b6e2b2bf54c86c2ef1f0ef1948bff0a13e79649b","sha256:88b71a58f48180e450c8570f681d46b4f1cfbd12ca57a9e147516fd1f2898103"],"state_sha256":"1280856456ff89f373f13cbd6a717ba1f0108bfab2d002b88b68d09dce185e0e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jChy2AX5C2dFngJY8P7+KqnVirPiPv9X99TFlnvBC30rgBdGxS2eBUBZ3Bq9+hiBYWN62Cch/pEGf9k8s0tuCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T02:40:15.746761Z","bundle_sha256":"b18a41507f876ec2a9e0d5c3330c4534f393a40ebb5806d95b0bdcd9ab4d9a1b"}}