{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:62WZYVL54RDDDZPX5SCZS2RLN5","short_pith_number":"pith:62WZYVL5","canonical_record":{"source":{"id":"1906.05578","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-13T09:49:44Z","cross_cats_sorted":[],"title_canon_sha256":"93c50592579d3668b0a9281c64c7108fdefb0464399cfdfd0edfe1da14b1411a","abstract_canon_sha256":"c2764a6fa223814e7054c327439ae7135ca30c4c4d47c1aaa5fa0238f4811a23"},"schema_version":"1.0"},"canonical_sha256":"f6ad9c557de44631e5f7ec85996a2b6f656b9d79b2244a9f69af4c8c3c73d45c","source":{"kind":"arxiv","id":"1906.05578","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05578","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05578v2","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05578","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"pith_short_12","alias_value":"62WZYVL54RDD","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"pith_short_16","alias_value":"62WZYVL54RDDDZPX","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"pith_short_8","alias_value":"62WZYVL5","created_at":"2026-07-05T00:03:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:62WZYVL54RDDDZPX5SCZS2RLN5","target":"record","payload":{"canonical_record":{"source":{"id":"1906.05578","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-13T09:49:44Z","cross_cats_sorted":[],"title_canon_sha256":"93c50592579d3668b0a9281c64c7108fdefb0464399cfdfd0edfe1da14b1411a","abstract_canon_sha256":"c2764a6fa223814e7054c327439ae7135ca30c4c4d47c1aaa5fa0238f4811a23"},"schema_version":"1.0"},"canonical_sha256":"f6ad9c557de44631e5f7ec85996a2b6f656b9d79b2244a9f69af4c8c3c73d45c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:03:15.709682Z","signature_b64":"P8RXOmBiCINl7ymvakktOHC5FRHPh3yag2QXBoZVvOAZ8PtQ4wC/8ffdznPPQzr2yjLR+Q8bY7XiU/R2QaTVBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f6ad9c557de44631e5f7ec85996a2b6f656b9d79b2244a9f69af4c8c3c73d45c","last_reissued_at":"2026-07-05T00:03:15.709259Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:03:15.709259Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1906.05578","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":"2026-07-05T00:03:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"43XpwML1p205ZnIpvLziX0O7Nvym3yuLoiugNaMUDJ/eLiuSo2eBGNgPSlsKSg6gZF5CBEtohyPynQHTBZ8TAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T20:56:23.794120Z"},"content_sha256":"1a2bfbbf69cf0b8e86678f2c32c0662f1c1786dde269afb651ab08c3b046a63b","schema_version":"1.0","event_id":"sha256:1a2bfbbf69cf0b8e86678f2c32c0662f1c1786dde269afb651ab08c3b046a63b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:62WZYVL54RDDDZPX5SCZS2RLN5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The specific angular momentum radial profile in dense cores: improved initial conditions for disk formation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Anika Schmiedeke, Bo Zhao, Dominique M. Segura-Cox, Jaime E. Pineda, John Tobin, Michael Dunham, Paola Caselli, Philip C. Myers","submitted_at":"2019-06-13T09:49:44Z","abstract_excerpt":"The determination of the specific angular momentum radial profile, $j(r)$, in the early stages of star formation is crucial to constrain star and circumstellar disk formation theories. The specific angular momentum is directly related to the largest Keplerian disk possible, and it could constrain the angular momentum removal mechanism. We determine $j(r)$ towards two Class 0 objects and a first hydrostatic core candidate in the Perseus cloud, which is consistent across all three sources and well fit with a single power-law relation between 800 and 10,000\\,au: $j_{fit}(r)=10^{-3.60\\pm0.15}\\left"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05578","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1906.05578/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":"2026-07-05T00:03:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+OQTAf6M5PH8WOt/BoN0RWQHZ2Y8YNUCTZqZ2M3MS+loQfrfA6sqxmFmeZ5qMo54+9N9agzkBec1GbnzsGGfBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-01T20:56:23.794628Z"},"content_sha256":"420ad26ab3d97841437017e4ecb515504c6b9600dcede3a6ca6dec298ed8330c","schema_version":"1.0","event_id":"sha256:420ad26ab3d97841437017e4ecb515504c6b9600dcede3a6ca6dec298ed8330c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/62WZYVL54RDDDZPX5SCZS2RLN5/bundle.json","state_url":"https://pith.science/pith/62WZYVL54RDDDZPX5SCZS2RLN5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/62WZYVL54RDDDZPX5SCZS2RLN5/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":"2026-08-01T20:56:23Z","links":{"resolver":"https://pith.science/pith/62WZYVL54RDDDZPX5SCZS2RLN5","bundle":"https://pith.science/pith/62WZYVL54RDDDZPX5SCZS2RLN5/bundle.json","state":"https://pith.science/pith/62WZYVL54RDDDZPX5SCZS2RLN5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/62WZYVL54RDDDZPX5SCZS2RLN5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:62WZYVL54RDDDZPX5SCZS2RLN5","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":"c2764a6fa223814e7054c327439ae7135ca30c4c4d47c1aaa5fa0238f4811a23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-13T09:49:44Z","title_canon_sha256":"93c50592579d3668b0a9281c64c7108fdefb0464399cfdfd0edfe1da14b1411a"},"schema_version":"1.0","source":{"id":"1906.05578","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1906.05578","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"arxiv_version","alias_value":"1906.05578v2","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.05578","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"pith_short_12","alias_value":"62WZYVL54RDD","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"pith_short_16","alias_value":"62WZYVL54RDDDZPX","created_at":"2026-07-05T00:03:15Z"},{"alias_kind":"pith_short_8","alias_value":"62WZYVL5","created_at":"2026-07-05T00:03:15Z"}],"graph_snapshots":[{"event_id":"sha256:420ad26ab3d97841437017e4ecb515504c6b9600dcede3a6ca6dec298ed8330c","target":"graph","created_at":"2026-07-05T00:03:15Z","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/1906.05578/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The determination of the specific angular momentum radial profile, $j(r)$, in the early stages of star formation is crucial to constrain star and circumstellar disk formation theories. The specific angular momentum is directly related to the largest Keplerian disk possible, and it could constrain the angular momentum removal mechanism. We determine $j(r)$ towards two Class 0 objects and a first hydrostatic core candidate in the Perseus cloud, which is consistent across all three sources and well fit with a single power-law relation between 800 and 10,000\\,au: $j_{fit}(r)=10^{-3.60\\pm0.15}\\left","authors_text":"Anika Schmiedeke, Bo Zhao, Dominique M. Segura-Cox, Jaime E. Pineda, John Tobin, Michael Dunham, Paola Caselli, Philip C. Myers","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-13T09:49:44Z","title":"The specific angular momentum radial profile in dense cores: improved initial conditions for disk formation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.05578","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":"sha256:1a2bfbbf69cf0b8e86678f2c32c0662f1c1786dde269afb651ab08c3b046a63b","target":"record","created_at":"2026-07-05T00:03:15Z","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":"c2764a6fa223814e7054c327439ae7135ca30c4c4d47c1aaa5fa0238f4811a23","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-06-13T09:49:44Z","title_canon_sha256":"93c50592579d3668b0a9281c64c7108fdefb0464399cfdfd0edfe1da14b1411a"},"schema_version":"1.0","source":{"id":"1906.05578","kind":"arxiv","version":2}},"canonical_sha256":"f6ad9c557de44631e5f7ec85996a2b6f656b9d79b2244a9f69af4c8c3c73d45c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f6ad9c557de44631e5f7ec85996a2b6f656b9d79b2244a9f69af4c8c3c73d45c","first_computed_at":"2026-07-05T00:03:15.709259Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:03:15.709259Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"P8RXOmBiCINl7ymvakktOHC5FRHPh3yag2QXBoZVvOAZ8PtQ4wC/8ffdznPPQzr2yjLR+Q8bY7XiU/R2QaTVBA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:03:15.709682Z","signed_message":"canonical_sha256_bytes"},"source_id":"1906.05578","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1a2bfbbf69cf0b8e86678f2c32c0662f1c1786dde269afb651ab08c3b046a63b","sha256:420ad26ab3d97841437017e4ecb515504c6b9600dcede3a6ca6dec298ed8330c"],"state_sha256":"dfa53a05e489826d92977e91da9799ff60efa10d700b1f3fe8d61029c08f9888"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6pePu1G4jTrt+lokBhOTeWiFF9tqPiADB/DSIFHmuVvq8DzmgplIMIFYfnHfkHrxLl4n4YbOm8Y8Eghhs5RRAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-01T20:56:23.798518Z","bundle_sha256":"17e7b3e11b05395d66912757db12af27a290f5db71e0c35f3df75498641a36d3"}}