{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:GWIOGYPMVXXFN52SWBGT2BQGUH","short_pith_number":"pith:GWIOGYPM","canonical_record":{"source":{"id":"1001.1096","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-07T15:44:31Z","cross_cats_sorted":[],"title_canon_sha256":"d46109e042a0070c93efe77149203d0ccd25ee33974c89e56b8fc1fd28f9c9ba","abstract_canon_sha256":"211ab72b83d428d082969d8adce49e179e7007eab42870ccd2fe59208731172f"},"schema_version":"1.0"},"canonical_sha256":"3590e361ecadee56f752b04d3d0606a1ff5214f1eb9fe72cc8167350d8e428ae","source":{"kind":"arxiv","id":"1001.1096","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.1096","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"arxiv_version","alias_value":"1001.1096v1","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.1096","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"pith_short_12","alias_value":"GWIOGYPMVXXF","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"GWIOGYPMVXXFN52S","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"GWIOGYPM","created_at":"2026-05-18T12:26:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:GWIOGYPMVXXFN52SWBGT2BQGUH","target":"record","payload":{"canonical_record":{"source":{"id":"1001.1096","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-07T15:44:31Z","cross_cats_sorted":[],"title_canon_sha256":"d46109e042a0070c93efe77149203d0ccd25ee33974c89e56b8fc1fd28f9c9ba","abstract_canon_sha256":"211ab72b83d428d082969d8adce49e179e7007eab42870ccd2fe59208731172f"},"schema_version":"1.0"},"canonical_sha256":"3590e361ecadee56f752b04d3d0606a1ff5214f1eb9fe72cc8167350d8e428ae","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:59.206367Z","signature_b64":"wBgXFVL84PPxqo2FQeU1A51xPrkBTSKpG5GkMUufU/siRs+fKM0lTUlg2lVBQyIZhsqiew/frzErJMdqgyEXAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3590e361ecadee56f752b04d3d0606a1ff5214f1eb9fe72cc8167350d8e428ae","last_reissued_at":"2026-05-18T01:04:59.205640Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:59.205640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.1096","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":"2026-05-18T01:04:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"j7fDReB6woZs6s+bK0X+3UPL8EyYCBbAUWTDV6WgLWDgd6OYzYZBvhP78e8IGqL9A1SKpaKnf8L8qOeJyjKKBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:43:26.835749Z"},"content_sha256":"0d03ac2a56ba52540257ffb7b3b2607542a138444b5b5c80fd53985701645755","schema_version":"1.0","event_id":"sha256:0d03ac2a56ba52540257ffb7b3b2607542a138444b5b5c80fd53985701645755"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:GWIOGYPMVXXFN52SWBGT2BQGUH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two distinct sequences of blue straggler stars in the globular cluster M30","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"(2) ESA, (3) McMaster University, (4) Astronomy Department, (5) INAF, (6) Research School of Astronomy, A. I. Karakas (6), A. Sills (3), Astronomy, Astrophysics, Australia), B. Lanzoni (1), Canada, Department of Physics, E. Dalessandro (1), F. Fusi Pecci (5), F. R. Ferraro (1), G. Beccari (2), Italy, Mt Stromlo Observatory, Osservatorio Astronomico di Bologna, P. Miocchi (1), R. T. Rood (4), S. Bovinelli (1) ((1) Department of Astronomy, Space Science Department, The Netherlands, University of Bologna, University of Virginia, USA","submitted_at":"2010-01-07T15:44:31Z","abstract_excerpt":"Stars in globular clusters are generally believed to have all formed at the same time, early in the Galaxy's history. 'Blue stragglers' are stars massive enough that they should have evolved into white dwarfs long ago. Two possible mechanisms have been proposed for their formation: mass transfer between binary companions and stellar mergers resulting from direct collisions between two stars. Recently, the binary explanation was claimed to be dominant. Here we report that there are two distinct parallel sequences of blue stragglers in M30. This globular cluster is thought to have undergone 'cor"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.1096","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":"2026-05-18T01:04:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fs01QfRDb5n7oHr9FvNAZPhW9trBgs0py7YBllxTcdVn2qEfx9Q7XNoyfqeoHK1fqQrfQvTv2m+xSKZDTsxbCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T16:43:26.836228Z"},"content_sha256":"6c02a408771a1107aba16a95dd35fed01d0ab84a849a076998d0a14d26b23d74","schema_version":"1.0","event_id":"sha256:6c02a408771a1107aba16a95dd35fed01d0ab84a849a076998d0a14d26b23d74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GWIOGYPMVXXFN52SWBGT2BQGUH/bundle.json","state_url":"https://pith.science/pith/GWIOGYPMVXXFN52SWBGT2BQGUH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GWIOGYPMVXXFN52SWBGT2BQGUH/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":"2026-08-07T16:43:26Z","links":{"resolver":"https://pith.science/pith/GWIOGYPMVXXFN52SWBGT2BQGUH","bundle":"https://pith.science/pith/GWIOGYPMVXXFN52SWBGT2BQGUH/bundle.json","state":"https://pith.science/pith/GWIOGYPMVXXFN52SWBGT2BQGUH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GWIOGYPMVXXFN52SWBGT2BQGUH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:GWIOGYPMVXXFN52SWBGT2BQGUH","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":"211ab72b83d428d082969d8adce49e179e7007eab42870ccd2fe59208731172f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-07T15:44:31Z","title_canon_sha256":"d46109e042a0070c93efe77149203d0ccd25ee33974c89e56b8fc1fd28f9c9ba"},"schema_version":"1.0","source":{"id":"1001.1096","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.1096","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"arxiv_version","alias_value":"1001.1096v1","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.1096","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"pith_short_12","alias_value":"GWIOGYPMVXXF","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_16","alias_value":"GWIOGYPMVXXFN52S","created_at":"2026-05-18T12:26:07Z"},{"alias_kind":"pith_short_8","alias_value":"GWIOGYPM","created_at":"2026-05-18T12:26:07Z"}],"graph_snapshots":[{"event_id":"sha256:6c02a408771a1107aba16a95dd35fed01d0ab84a849a076998d0a14d26b23d74","target":"graph","created_at":"2026-05-18T01:04:59Z","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":"Stars in globular clusters are generally believed to have all formed at the same time, early in the Galaxy's history. 'Blue stragglers' are stars massive enough that they should have evolved into white dwarfs long ago. Two possible mechanisms have been proposed for their formation: mass transfer between binary companions and stellar mergers resulting from direct collisions between two stars. Recently, the binary explanation was claimed to be dominant. Here we report that there are two distinct parallel sequences of blue stragglers in M30. This globular cluster is thought to have undergone 'cor","authors_text":"(2) ESA, (3) McMaster University, (4) Astronomy Department, (5) INAF, (6) Research School of Astronomy, A. I. Karakas (6), A. Sills (3), Astronomy, Astrophysics, Australia), B. Lanzoni (1), Canada, Department of Physics, E. Dalessandro (1), F. Fusi Pecci (5), F. R. Ferraro (1), G. Beccari (2), Italy, Mt Stromlo Observatory, Osservatorio Astronomico di Bologna, P. Miocchi (1), R. T. Rood (4), S. Bovinelli (1) ((1) Department of Astronomy, Space Science Department, The Netherlands, University of Bologna, University of Virginia, USA","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-07T15:44:31Z","title":"Two distinct sequences of blue straggler stars in the globular cluster M30"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.1096","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":"sha256:0d03ac2a56ba52540257ffb7b3b2607542a138444b5b5c80fd53985701645755","target":"record","created_at":"2026-05-18T01:04:59Z","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":"211ab72b83d428d082969d8adce49e179e7007eab42870ccd2fe59208731172f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2010-01-07T15:44:31Z","title_canon_sha256":"d46109e042a0070c93efe77149203d0ccd25ee33974c89e56b8fc1fd28f9c9ba"},"schema_version":"1.0","source":{"id":"1001.1096","kind":"arxiv","version":1}},"canonical_sha256":"3590e361ecadee56f752b04d3d0606a1ff5214f1eb9fe72cc8167350d8e428ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3590e361ecadee56f752b04d3d0606a1ff5214f1eb9fe72cc8167350d8e428ae","first_computed_at":"2026-05-18T01:04:59.205640Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:59.205640Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wBgXFVL84PPxqo2FQeU1A51xPrkBTSKpG5GkMUufU/siRs+fKM0lTUlg2lVBQyIZhsqiew/frzErJMdqgyEXAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:59.206367Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.1096","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0d03ac2a56ba52540257ffb7b3b2607542a138444b5b5c80fd53985701645755","sha256:6c02a408771a1107aba16a95dd35fed01d0ab84a849a076998d0a14d26b23d74"],"state_sha256":"1159a59a8112aaa5019b53fbe56afb46cdcbd014765161278a6f8db06e5bb9d8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O1FhXQ73vbb8ZTEi73amAbGj2hqdATUXLXprQ/OM6qLiqOqNT4OjYV7d7ltPNt3fVZw0dTI2H9TOPXMVClnABA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T16:43:26.841328Z","bundle_sha256":"59b94050a39ff329330c16afd1d0b396255499488694e9eb65d77d413ce05465"}}