{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:ECR4FCHNCXIO2DC7YJMEYY3KOB","short_pith_number":"pith:ECR4FCHN","canonical_record":{"source":{"id":"2507.00815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-01T14:46:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"bbc86a8672db9483aac2001e2f7a113cce32bcf2222858d737841e2acc3aa7c5","abstract_canon_sha256":"8061057389f68bc3a76bac64dcdfd92a3afed588e20dcb4ba850857b9a5f78a5"},"schema_version":"1.0"},"canonical_sha256":"20a3c288ed15d0ed0c5fc2584c636a706a8899ec495929c69f72d8ce1c6c586a","source":{"kind":"arxiv","id":"2507.00815","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.00815","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"arxiv_version","alias_value":"2507.00815v1","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.00815","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"pith_short_12","alias_value":"ECR4FCHNCXIO","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"pith_short_16","alias_value":"ECR4FCHNCXIO2DC7","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"pith_short_8","alias_value":"ECR4FCHN","created_at":"2026-07-05T11:30:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:ECR4FCHNCXIO2DC7YJMEYY3KOB","target":"record","payload":{"canonical_record":{"source":{"id":"2507.00815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-01T14:46:35Z","cross_cats_sorted":["astro-ph.SR"],"title_canon_sha256":"bbc86a8672db9483aac2001e2f7a113cce32bcf2222858d737841e2acc3aa7c5","abstract_canon_sha256":"8061057389f68bc3a76bac64dcdfd92a3afed588e20dcb4ba850857b9a5f78a5"},"schema_version":"1.0"},"canonical_sha256":"20a3c288ed15d0ed0c5fc2584c636a706a8899ec495929c69f72d8ce1c6c586a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:30:14.909820Z","signature_b64":"POdqzJv4jaZqqt4acivCSmdx9EsntmHW6HBEgIRRnshRBq4clndn/gSQlGsxbUA/OAJiAT4VAXsPuSpu8w9fBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"20a3c288ed15d0ed0c5fc2584c636a706a8899ec495929c69f72d8ce1c6c586a","last_reissued_at":"2026-07-05T11:30:14.909400Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:30:14.909400Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2507.00815","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":"2026-07-05T11:30:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AJwUHZWGVWMfboFVFkaheTwrxJCsTF2F11R/B/kvUuO/69JyTPTCcxI6VIcojactYOs39cgFuwk0IYoNIifmAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:14:59.127637Z"},"content_sha256":"7bddceb06a5d004b1ebcf61da3f89e1d7deec77b382fdbc0ec697e4be052b874","schema_version":"1.0","event_id":"sha256:7bddceb06a5d004b1ebcf61da3f89e1d7deec77b382fdbc0ec697e4be052b874"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:ECR4FCHNCXIO2DC7YJMEYY3KOB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Evolution of Substructure during Star Cluster Assembly","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR"],"primary_cat":"astro-ph.GA","authors_text":"Alison Sills, Claude Cournoyer-Cloutier, Edwin Laverde-Villarreal, Veronica Arias Callejas","submitted_at":"2025-07-01T14:46:35Z","abstract_excerpt":"Star cluster formation and assembly occurs inside filamentary and turbulent molecular clouds, which imprints both spatial and kinematic substructure on the young cluster. In this paper, we quantify the amount and evolution of this substructure in simulations of star cluster formation that include radiation magnetohydrodynamical evolution of the gas, coupled with detailed stellar dynamics, binary formation and evolution, and stellar feedback. We find that both spatial and kinematic substructure are present at early times. Both are erased as the cluster assembles through the formation of new sta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.00815","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/2507.00815/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":"2026-07-05T11:30:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aLPJFMZuRc0KSB62AstTb3ZAkCmF0iZBDcKW+o9X9pGM3HV5nRQD/xCMevxKhdAWdX/IIyOWeaA4tLRVqgZ8CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T22:14:59.128527Z"},"content_sha256":"3c8a50f38835ef0c9d8699a6adf3152d5c97503ea64b2ce5db61a2ea8dc89797","schema_version":"1.0","event_id":"sha256:3c8a50f38835ef0c9d8699a6adf3152d5c97503ea64b2ce5db61a2ea8dc89797"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB/bundle.json","state_url":"https://pith.science/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB/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":"2026-08-07T22:14:59Z","links":{"resolver":"https://pith.science/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB","bundle":"https://pith.science/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB/bundle.json","state":"https://pith.science/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ECR4FCHNCXIO2DC7YJMEYY3KOB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:ECR4FCHNCXIO2DC7YJMEYY3KOB","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":"8061057389f68bc3a76bac64dcdfd92a3afed588e20dcb4ba850857b9a5f78a5","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-01T14:46:35Z","title_canon_sha256":"bbc86a8672db9483aac2001e2f7a113cce32bcf2222858d737841e2acc3aa7c5"},"schema_version":"1.0","source":{"id":"2507.00815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2507.00815","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"arxiv_version","alias_value":"2507.00815v1","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.00815","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"pith_short_12","alias_value":"ECR4FCHNCXIO","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"pith_short_16","alias_value":"ECR4FCHNCXIO2DC7","created_at":"2026-07-05T11:30:14Z"},{"alias_kind":"pith_short_8","alias_value":"ECR4FCHN","created_at":"2026-07-05T11:30:14Z"}],"graph_snapshots":[{"event_id":"sha256:3c8a50f38835ef0c9d8699a6adf3152d5c97503ea64b2ce5db61a2ea8dc89797","target":"graph","created_at":"2026-07-05T11:30:14Z","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/2507.00815/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Star cluster formation and assembly occurs inside filamentary and turbulent molecular clouds, which imprints both spatial and kinematic substructure on the young cluster. In this paper, we quantify the amount and evolution of this substructure in simulations of star cluster formation that include radiation magnetohydrodynamical evolution of the gas, coupled with detailed stellar dynamics, binary formation and evolution, and stellar feedback. We find that both spatial and kinematic substructure are present at early times. Both are erased as the cluster assembles through the formation of new sta","authors_text":"Alison Sills, Claude Cournoyer-Cloutier, Edwin Laverde-Villarreal, Veronica Arias Callejas","cross_cats":["astro-ph.SR"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-01T14:46:35Z","title":"The Evolution of Substructure during Star Cluster Assembly"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.00815","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":"sha256:7bddceb06a5d004b1ebcf61da3f89e1d7deec77b382fdbc0ec697e4be052b874","target":"record","created_at":"2026-07-05T11:30:14Z","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":"8061057389f68bc3a76bac64dcdfd92a3afed588e20dcb4ba850857b9a5f78a5","cross_cats_sorted":["astro-ph.SR"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2025-07-01T14:46:35Z","title_canon_sha256":"bbc86a8672db9483aac2001e2f7a113cce32bcf2222858d737841e2acc3aa7c5"},"schema_version":"1.0","source":{"id":"2507.00815","kind":"arxiv","version":1}},"canonical_sha256":"20a3c288ed15d0ed0c5fc2584c636a706a8899ec495929c69f72d8ce1c6c586a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"20a3c288ed15d0ed0c5fc2584c636a706a8899ec495929c69f72d8ce1c6c586a","first_computed_at":"2026-07-05T11:30:14.909400Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:30:14.909400Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"POdqzJv4jaZqqt4acivCSmdx9EsntmHW6HBEgIRRnshRBq4clndn/gSQlGsxbUA/OAJiAT4VAXsPuSpu8w9fBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:30:14.909820Z","signed_message":"canonical_sha256_bytes"},"source_id":"2507.00815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7bddceb06a5d004b1ebcf61da3f89e1d7deec77b382fdbc0ec697e4be052b874","sha256:3c8a50f38835ef0c9d8699a6adf3152d5c97503ea64b2ce5db61a2ea8dc89797"],"state_sha256":"36aa1056ac350137aa6026801f9344e51ae0206567fa8f9a3464eb8c44c997bf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d1kyzxUmrroV+tLBX0pZ0H4a5iomMUv0ZzQA8BWQ59q3yWRpRzq2WGxrEb/P8t6idkKNkj5uHT3xCnlN5deJBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T22:14:59.135262Z","bundle_sha256":"8e72dc92b0d102538a0c6194731e39f824d1fabd66744393ce4ef3530babe04a"}}