{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:PY6SWZZCFTLWYKTGMEOSKZUYJY","short_pith_number":"pith:PY6SWZZC","canonical_record":{"source":{"id":"1208.6453","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-08-31T10:39:56Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"35f6144bcff85340cbe69cb8c8a369451c89da5d679df79b3f92e7840d806616","abstract_canon_sha256":"880b3409f27f73480ec901e8d842a8d054002caf780a64314e1f13671b45c706"},"schema_version":"1.0"},"canonical_sha256":"7e3d2b67222cd76c2a66611d2566984e30c2505341f6565f3bcf84fbe17d169b","source":{"kind":"arxiv","id":"1208.6453","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.6453","created_at":"2026-05-18T03:46:33Z"},{"alias_kind":"arxiv_version","alias_value":"1208.6453v1","created_at":"2026-05-18T03:46:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.6453","created_at":"2026-05-18T03:46:33Z"},{"alias_kind":"pith_short_12","alias_value":"PY6SWZZCFTLW","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PY6SWZZCFTLWYKTG","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PY6SWZZC","created_at":"2026-05-18T12:27:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:PY6SWZZCFTLWYKTGMEOSKZUYJY","target":"record","payload":{"canonical_record":{"source":{"id":"1208.6453","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-08-31T10:39:56Z","cross_cats_sorted":["physics.chem-ph"],"title_canon_sha256":"35f6144bcff85340cbe69cb8c8a369451c89da5d679df79b3f92e7840d806616","abstract_canon_sha256":"880b3409f27f73480ec901e8d842a8d054002caf780a64314e1f13671b45c706"},"schema_version":"1.0"},"canonical_sha256":"7e3d2b67222cd76c2a66611d2566984e30c2505341f6565f3bcf84fbe17d169b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:33.041529Z","signature_b64":"q3aYssAmQWabr2Hh0C7Rk8uhtJWVhP08UX1vRPgT5AXPQjGEg40uTJDjj1ppCE2rNvMOfnCHFwIRMxwlUrwcBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e3d2b67222cd76c2a66611d2566984e30c2505341f6565f3bcf84fbe17d169b","last_reissued_at":"2026-05-18T03:46:33.040553Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:33.040553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.6453","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":"2026-05-18T03:46:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"986LEmeRVadpU3tNwJphVEkDu3F2zX8987RJKM0DLUm0G30VW6Zo+XXHzpv/lwKz1qGFLNmioMArkpOnhYmgDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:20:08.821389Z"},"content_sha256":"38982a1c683cccdc1396ecbbdd4bbe4c7cd904ea8b7921003ce27efdd61916dc","schema_version":"1.0","event_id":"sha256:38982a1c683cccdc1396ecbbdd4bbe4c7cd904ea8b7921003ce27efdd61916dc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:PY6SWZZCFTLWYKTGMEOSKZUYJY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Sudden acceleration of flames in open channels driven by hydraulic resistance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.chem-ph"],"primary_cat":"physics.flu-dyn","authors_text":"J. Yanez, M. Kuznetsov, V. Bykov","submitted_at":"2012-08-31T10:39:56Z","abstract_excerpt":"Hydrogen-air deflagrations with venting at the end of obstructed tubes are studied experimentally and numerically. A shockless transition to the so-called chocked regime of the flame propagation is reported. Mixtures with 13% vol. of hydrogen were ignited from the open end of the tube at the interface between fuel and the ambient air. Three venting ratios were selected, closed, 40% and 100%. In all cases the flame initially propagates without acceleration at a velocity close to the laminar flame speed. The flame configuration excludes most of conventionally acknowledged phenomena of the DDT, n"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.6453","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":"2026-05-18T03:46:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"864jUIAE6VBl8qiGqDDl7m9s9wseAuaGzRq+Wv4UiXZ/SncoGrrkPK0nZu3t0sBSp9HYrF9awntfiZEzFS4TCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T22:20:08.821745Z"},"content_sha256":"deedd4b0d0438d964038bd8e6372fc9d843201faad12d813d82037d57a142332","schema_version":"1.0","event_id":"sha256:deedd4b0d0438d964038bd8e6372fc9d843201faad12d813d82037d57a142332"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY/bundle.json","state_url":"https://pith.science/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY/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":"2026-06-02T22:20:08Z","links":{"resolver":"https://pith.science/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY","bundle":"https://pith.science/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY/bundle.json","state":"https://pith.science/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PY6SWZZCFTLWYKTGMEOSKZUYJY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:PY6SWZZCFTLWYKTGMEOSKZUYJY","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":"880b3409f27f73480ec901e8d842a8d054002caf780a64314e1f13671b45c706","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-08-31T10:39:56Z","title_canon_sha256":"35f6144bcff85340cbe69cb8c8a369451c89da5d679df79b3f92e7840d806616"},"schema_version":"1.0","source":{"id":"1208.6453","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.6453","created_at":"2026-05-18T03:46:33Z"},{"alias_kind":"arxiv_version","alias_value":"1208.6453v1","created_at":"2026-05-18T03:46:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.6453","created_at":"2026-05-18T03:46:33Z"},{"alias_kind":"pith_short_12","alias_value":"PY6SWZZCFTLW","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_16","alias_value":"PY6SWZZCFTLWYKTG","created_at":"2026-05-18T12:27:18Z"},{"alias_kind":"pith_short_8","alias_value":"PY6SWZZC","created_at":"2026-05-18T12:27:18Z"}],"graph_snapshots":[{"event_id":"sha256:deedd4b0d0438d964038bd8e6372fc9d843201faad12d813d82037d57a142332","target":"graph","created_at":"2026-05-18T03:46:33Z","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":"Hydrogen-air deflagrations with venting at the end of obstructed tubes are studied experimentally and numerically. A shockless transition to the so-called chocked regime of the flame propagation is reported. Mixtures with 13% vol. of hydrogen were ignited from the open end of the tube at the interface between fuel and the ambient air. Three venting ratios were selected, closed, 40% and 100%. In all cases the flame initially propagates without acceleration at a velocity close to the laminar flame speed. The flame configuration excludes most of conventionally acknowledged phenomena of the DDT, n","authors_text":"J. Yanez, M. Kuznetsov, V. Bykov","cross_cats":["physics.chem-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-08-31T10:39:56Z","title":"Sudden acceleration of flames in open channels driven by hydraulic resistance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.6453","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":"sha256:38982a1c683cccdc1396ecbbdd4bbe4c7cd904ea8b7921003ce27efdd61916dc","target":"record","created_at":"2026-05-18T03:46:33Z","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":"880b3409f27f73480ec901e8d842a8d054002caf780a64314e1f13671b45c706","cross_cats_sorted":["physics.chem-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2012-08-31T10:39:56Z","title_canon_sha256":"35f6144bcff85340cbe69cb8c8a369451c89da5d679df79b3f92e7840d806616"},"schema_version":"1.0","source":{"id":"1208.6453","kind":"arxiv","version":1}},"canonical_sha256":"7e3d2b67222cd76c2a66611d2566984e30c2505341f6565f3bcf84fbe17d169b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7e3d2b67222cd76c2a66611d2566984e30c2505341f6565f3bcf84fbe17d169b","first_computed_at":"2026-05-18T03:46:33.040553Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:33.040553Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"q3aYssAmQWabr2Hh0C7Rk8uhtJWVhP08UX1vRPgT5AXPQjGEg40uTJDjj1ppCE2rNvMOfnCHFwIRMxwlUrwcBw==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:33.041529Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.6453","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:38982a1c683cccdc1396ecbbdd4bbe4c7cd904ea8b7921003ce27efdd61916dc","sha256:deedd4b0d0438d964038bd8e6372fc9d843201faad12d813d82037d57a142332"],"state_sha256":"175a0a112fde975fd540a69486060e23675066aa8d705d5024654c6d56b0e552"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yWjzLpZnMHPt5b/xBiN/+uRsQ12YI66NpQbNqadO02XYPPNl1uSAT9PPgHYcAs5+zbjUxh6twZmpWga2GGYLAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T22:20:08.823730Z","bundle_sha256":"fa676a548dc81d8e633360eb8cf722558e1cb9b21f9d1d872900e063efb0e478"}}