{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:EIAD5PSK7G64EUESB2XOYZ5DO6","short_pith_number":"pith:EIAD5PSK","canonical_record":{"source":{"id":"2207.04406","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-10T07:48:46Z","cross_cats_sorted":[],"title_canon_sha256":"b02ffe334ea371e5b04e82da189577b0b1f3c0221741ad364a5b559cf05adc77","abstract_canon_sha256":"964e1d631856c8337e52c28020946a0f58cda6d57b47164deffcd9cd0e3c61ef"},"schema_version":"1.0"},"canonical_sha256":"22003ebe4af9bdc250920eaeec67a37795baca7cbf856b1ce58d5cf51cf8700e","source":{"kind":"arxiv","id":"2207.04406","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.04406","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"arxiv_version","alias_value":"2207.04406v2","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.04406","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"pith_short_12","alias_value":"EIAD5PSK7G64","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"pith_short_16","alias_value":"EIAD5PSK7G64EUES","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"pith_short_8","alias_value":"EIAD5PSK","created_at":"2026-07-05T06:25:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:EIAD5PSK7G64EUESB2XOYZ5DO6","target":"record","payload":{"canonical_record":{"source":{"id":"2207.04406","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-10T07:48:46Z","cross_cats_sorted":[],"title_canon_sha256":"b02ffe334ea371e5b04e82da189577b0b1f3c0221741ad364a5b559cf05adc77","abstract_canon_sha256":"964e1d631856c8337e52c28020946a0f58cda6d57b47164deffcd9cd0e3c61ef"},"schema_version":"1.0"},"canonical_sha256":"22003ebe4af9bdc250920eaeec67a37795baca7cbf856b1ce58d5cf51cf8700e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:25:09.212816Z","signature_b64":"wVcDSdvaXGvVsbjaKxs25is4W6zNzhHh3uzwwvaDBIZ/VAp2j0szIO8wG5HsyLqc9g014iV3/0XukILzvXpmAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"22003ebe4af9bdc250920eaeec67a37795baca7cbf856b1ce58d5cf51cf8700e","last_reissued_at":"2026-07-05T06:25:09.212305Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:25:09.212305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2207.04406","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":"2026-07-05T06:25:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Zvjzrw7Ax8calRAvh1V0jNsCBXDxUoApVEz2YHVk86ixY6IBhxDk2+PsoEjYJa8r2QGpdAlReQSYxq8ztXE6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T19:05:14.798761Z"},"content_sha256":"34be0cd28161858f9885cc1c6d16e75dd25c906d97f98cece56ab786d77d865c","schema_version":"1.0","event_id":"sha256:34be0cd28161858f9885cc1c6d16e75dd25c906d97f98cece56ab786d77d865c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:EIAD5PSK7G64EUESB2XOYZ5DO6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the origins of extreme velocity stars as revealed by large-scale Galactic surveys","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Hua-Wei Zhang, Qing-Zheng Li, Timothy C. Beers, Xiao-Bo Dong, Yang Huang, Zhen Yuan","submitted_at":"2022-07-10T07:48:46Z","abstract_excerpt":"We assemble a large sample of 12,784 high-velocity stars with total velocity $\\it{V}_{\\rm{GSR}}\\ge {\\rm 300}$ km s$^{-1}$, selected from RAVE DR5, SDSS DR12, LAMOST DR8, APOGEE DR16, GALAH DR2, and $Gaia$ EDR3. In this sample, 52 are marginally hypervelocity star (HVS) candidates that have $\\it{V}_{\\rm{GSR}}$ exceeding their local escape velocities within $2\\sigma$ confidence levels, 40 of which are discovered for the first time. All candidates are metal-poor, late-type halo stars, significantly different from the previous identified HVSs, which are largely massive early-type stars, discovered"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.04406","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/2207.04406/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":"2026-07-05T06:25:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s6YtAGhN3uBZ+vr8twWJtkqeHsDX0C0Tc4tX8vY35vaVdUNLRa+RxMaRhWMCzrZll30LOHLoNfmF0F/fjyLuDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-02T19:05:14.799065Z"},"content_sha256":"54498b6f4012556ef9f4a3bfb7dd59d63cab91956923bf803e3029578860aa1c","schema_version":"1.0","event_id":"sha256:54498b6f4012556ef9f4a3bfb7dd59d63cab91956923bf803e3029578860aa1c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EIAD5PSK7G64EUESB2XOYZ5DO6/bundle.json","state_url":"https://pith.science/pith/EIAD5PSK7G64EUESB2XOYZ5DO6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EIAD5PSK7G64EUESB2XOYZ5DO6/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":"2026-08-02T19:05:14Z","links":{"resolver":"https://pith.science/pith/EIAD5PSK7G64EUESB2XOYZ5DO6","bundle":"https://pith.science/pith/EIAD5PSK7G64EUESB2XOYZ5DO6/bundle.json","state":"https://pith.science/pith/EIAD5PSK7G64EUESB2XOYZ5DO6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EIAD5PSK7G64EUESB2XOYZ5DO6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:EIAD5PSK7G64EUESB2XOYZ5DO6","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":"964e1d631856c8337e52c28020946a0f58cda6d57b47164deffcd9cd0e3c61ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-10T07:48:46Z","title_canon_sha256":"b02ffe334ea371e5b04e82da189577b0b1f3c0221741ad364a5b559cf05adc77"},"schema_version":"1.0","source":{"id":"2207.04406","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2207.04406","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"arxiv_version","alias_value":"2207.04406v2","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2207.04406","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"pith_short_12","alias_value":"EIAD5PSK7G64","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"pith_short_16","alias_value":"EIAD5PSK7G64EUES","created_at":"2026-07-05T06:25:09Z"},{"alias_kind":"pith_short_8","alias_value":"EIAD5PSK","created_at":"2026-07-05T06:25:09Z"}],"graph_snapshots":[{"event_id":"sha256:54498b6f4012556ef9f4a3bfb7dd59d63cab91956923bf803e3029578860aa1c","target":"graph","created_at":"2026-07-05T06:25:09Z","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/2207.04406/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We assemble a large sample of 12,784 high-velocity stars with total velocity $\\it{V}_{\\rm{GSR}}\\ge {\\rm 300}$ km s$^{-1}$, selected from RAVE DR5, SDSS DR12, LAMOST DR8, APOGEE DR16, GALAH DR2, and $Gaia$ EDR3. In this sample, 52 are marginally hypervelocity star (HVS) candidates that have $\\it{V}_{\\rm{GSR}}$ exceeding their local escape velocities within $2\\sigma$ confidence levels, 40 of which are discovered for the first time. All candidates are metal-poor, late-type halo stars, significantly different from the previous identified HVSs, which are largely massive early-type stars, discovered","authors_text":"Hua-Wei Zhang, Qing-Zheng Li, Timothy C. Beers, Xiao-Bo Dong, Yang Huang, Zhen Yuan","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-10T07:48:46Z","title":"On the origins of extreme velocity stars as revealed by large-scale Galactic surveys"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.04406","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":"sha256:34be0cd28161858f9885cc1c6d16e75dd25c906d97f98cece56ab786d77d865c","target":"record","created_at":"2026-07-05T06:25:09Z","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":"964e1d631856c8337e52c28020946a0f58cda6d57b47164deffcd9cd0e3c61ef","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2022-07-10T07:48:46Z","title_canon_sha256":"b02ffe334ea371e5b04e82da189577b0b1f3c0221741ad364a5b559cf05adc77"},"schema_version":"1.0","source":{"id":"2207.04406","kind":"arxiv","version":2}},"canonical_sha256":"22003ebe4af9bdc250920eaeec67a37795baca7cbf856b1ce58d5cf51cf8700e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"22003ebe4af9bdc250920eaeec67a37795baca7cbf856b1ce58d5cf51cf8700e","first_computed_at":"2026-07-05T06:25:09.212305Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:25:09.212305Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wVcDSdvaXGvVsbjaKxs25is4W6zNzhHh3uzwwvaDBIZ/VAp2j0szIO8wG5HsyLqc9g014iV3/0XukILzvXpmAA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:25:09.212816Z","signed_message":"canonical_sha256_bytes"},"source_id":"2207.04406","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:34be0cd28161858f9885cc1c6d16e75dd25c906d97f98cece56ab786d77d865c","sha256:54498b6f4012556ef9f4a3bfb7dd59d63cab91956923bf803e3029578860aa1c"],"state_sha256":"2f3f953db3609bd454cb4cdb44ef7c8e01eab3fd13616a67f7396b5d7927d3af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dVp/+UDWWyuhosqF7ONvtf4cQhQcYvrIm4Mobh0kEsKsXOZKYVnFIJ8ZJvBXElvuRHfjKTS+7C9sHiaClMvxCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-02T19:05:14.802157Z","bundle_sha256":"609cd28c28c41a968c8007e11a9a584e05dea6422c9abc9f3a5bb31c160aa651"}}