{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2001:BRMK3KYA7RJVHIFI3QIOTQI7L3","short_pith_number":"pith:BRMK3KYA","canonical_record":{"source":{"id":"astro-ph/0103348","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-21T17:23:26Z","cross_cats_sorted":[],"title_canon_sha256":"2dfe616c9de0db63fa2284f32801fbfc355bf6ab3ff08b7421e9b4952de70e64","abstract_canon_sha256":"370b35e16ededb5fa39adbdc4b268ce99e427dfb31ca349a6bffcf813a45624a"},"schema_version":"1.0"},"canonical_sha256":"0c58adab00fc5353a0a8dc10e9c11f5ef2cdc91f24977e2dc2c41ff781bb9313","source":{"kind":"arxiv","id":"astro-ph/0103348","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0103348","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0103348v1","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0103348","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"pith_short_12","alias_value":"BRMK3KYA7RJV","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"pith_short_16","alias_value":"BRMK3KYA7RJVHIFI","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"pith_short_8","alias_value":"BRMK3KYA","created_at":"2026-07-04T23:57:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2001:BRMK3KYA7RJVHIFI3QIOTQI7L3","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0103348","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-21T17:23:26Z","cross_cats_sorted":[],"title_canon_sha256":"2dfe616c9de0db63fa2284f32801fbfc355bf6ab3ff08b7421e9b4952de70e64","abstract_canon_sha256":"370b35e16ededb5fa39adbdc4b268ce99e427dfb31ca349a6bffcf813a45624a"},"schema_version":"1.0"},"canonical_sha256":"0c58adab00fc5353a0a8dc10e9c11f5ef2cdc91f24977e2dc2c41ff781bb9313","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T23:57:14.922019Z","signature_b64":"kkQ6JNVDnWRIuqa8RKiAgJV29RYvzJkKfjdjU1Z4klIHg4FxBXhncwNsyTCEEUyw4qNsFXzlzMKqmmlQIzC6BQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"0c58adab00fc5353a0a8dc10e9c11f5ef2cdc91f24977e2dc2c41ff781bb9313","last_reissued_at":"2026-07-04T23:57:14.921635Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T23:57:14.921635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0103348","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":"2026-07-04T23:57:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2myFr99DYVmHbNEUxuZxBw21op8sMeVGg6+cLN4zn6SS80IDombqQRmzRGhnU4eRvhgHooHPxfdsOEGAFgYcCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T03:41:26.720317Z"},"content_sha256":"63393bfbb517d94d35f55617cdaf309e816d7307e6df466547873c70b2d44b42","schema_version":"1.0","event_id":"sha256:63393bfbb517d94d35f55617cdaf309e816d7307e6df466547873c70b2d44b42"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2001:BRMK3KYA7RJVHIFI3QIOTQI7L3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The BMW X-ray Cluster Survey","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alberto Moretti, Davide Lazzati, Emilio Molinari, Gianpiero Tagliaferri, Ian Dell'Antonio, Luigi Guzzo, Marcella Longhetti, Maria Rosa Panzera, Sergio Campana, Stefano Covino","submitted_at":"2001-03-21T17:23:26Z","abstract_excerpt":"We describe the main features of the BMW survey of serendipitous X-ray clusters, based on the still unexploited ROSAT-HRI archival observations. The sky coverage, surface density and first deep optical CCD images of the candidates indicate that this sample can represent an excellent complement to the existing PSPC deep cluster surveys and will provide us with a fully independent probe of the evolution of the cluster abundance, in addition to significantly increasing the number of clusters known at z>0.6."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0103348","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/astro-ph/0103348/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":"2026-07-04T23:57:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sho+7z75RleOA0xHIR/G12f4OGx9PDs13aJ6pdQPvByL9p5kBJzru1rILfD1UDcOQbXjzCCjzwBcRKa8NcoIDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-19T03:41:26.720828Z"},"content_sha256":"1811fd859c39202c546cc6eaa5adf3538039e1424e96de8e889e55923983a509","schema_version":"1.0","event_id":"sha256:1811fd859c39202c546cc6eaa5adf3538039e1424e96de8e889e55923983a509"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3/bundle.json","state_url":"https://pith.science/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3/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":"2026-08-19T03:41:26Z","links":{"resolver":"https://pith.science/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3","bundle":"https://pith.science/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3/bundle.json","state":"https://pith.science/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/BRMK3KYA7RJVHIFI3QIOTQI7L3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2001:BRMK3KYA7RJVHIFI3QIOTQI7L3","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":"370b35e16ededb5fa39adbdc4b268ce99e427dfb31ca349a6bffcf813a45624a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-21T17:23:26Z","title_canon_sha256":"2dfe616c9de0db63fa2284f32801fbfc355bf6ab3ff08b7421e9b4952de70e64"},"schema_version":"1.0","source":{"id":"astro-ph/0103348","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0103348","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0103348v1","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0103348","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"pith_short_12","alias_value":"BRMK3KYA7RJV","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"pith_short_16","alias_value":"BRMK3KYA7RJVHIFI","created_at":"2026-07-04T23:57:14Z"},{"alias_kind":"pith_short_8","alias_value":"BRMK3KYA","created_at":"2026-07-04T23:57:14Z"}],"graph_snapshots":[{"event_id":"sha256:1811fd859c39202c546cc6eaa5adf3538039e1424e96de8e889e55923983a509","target":"graph","created_at":"2026-07-04T23:57:14Z","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/astro-ph/0103348/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We describe the main features of the BMW survey of serendipitous X-ray clusters, based on the still unexploited ROSAT-HRI archival observations. The sky coverage, surface density and first deep optical CCD images of the candidates indicate that this sample can represent an excellent complement to the existing PSPC deep cluster surveys and will provide us with a fully independent probe of the evolution of the cluster abundance, in addition to significantly increasing the number of clusters known at z>0.6.","authors_text":"Alberto Moretti, Davide Lazzati, Emilio Molinari, Gianpiero Tagliaferri, Ian Dell'Antonio, Luigi Guzzo, Marcella Longhetti, Maria Rosa Panzera, Sergio Campana, Stefano Covino","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2001-03-21T17:23:26Z","title":"The BMW X-ray Cluster Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0103348","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":"sha256:63393bfbb517d94d35f55617cdaf309e816d7307e6df466547873c70b2d44b42","target":"record","created_at":"2026-07-04T23:57:14Z","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":"370b35e16ededb5fa39adbdc4b268ce99e427dfb31ca349a6bffcf813a45624a","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2001-03-21T17:23:26Z","title_canon_sha256":"2dfe616c9de0db63fa2284f32801fbfc355bf6ab3ff08b7421e9b4952de70e64"},"schema_version":"1.0","source":{"id":"astro-ph/0103348","kind":"arxiv","version":1}},"canonical_sha256":"0c58adab00fc5353a0a8dc10e9c11f5ef2cdc91f24977e2dc2c41ff781bb9313","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0c58adab00fc5353a0a8dc10e9c11f5ef2cdc91f24977e2dc2c41ff781bb9313","first_computed_at":"2026-07-04T23:57:14.921635Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T23:57:14.921635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kkQ6JNVDnWRIuqa8RKiAgJV29RYvzJkKfjdjU1Z4klIHg4FxBXhncwNsyTCEEUyw4qNsFXzlzMKqmmlQIzC6BQ==","signature_status":"signed_v1","signed_at":"2026-07-04T23:57:14.922019Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0103348","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:63393bfbb517d94d35f55617cdaf309e816d7307e6df466547873c70b2d44b42","sha256:1811fd859c39202c546cc6eaa5adf3538039e1424e96de8e889e55923983a509"],"state_sha256":"e96bd20a43ebdeb5b8fffd9d68fa4d8380531b03370edc401ed902a0e086d2c0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gvBVB9Nl2kPN1ez0VnAge1OB+FvT2Cxlkr/yEKRbUc185PgEeWCwVP3rrxVQ7pKpUSD2eF3xTaqTe0639BASCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-19T03:41:26.726143Z","bundle_sha256":"aed84ca6adc5702d35308ebfe942905cb390218baa8e6d2e9a3e31698d71fadc"}}