{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:PVC4RSWZFY247LKPNHYCQMBW5A","short_pith_number":"pith:PVC4RSWZ","canonical_record":{"source":{"id":"1307.4094","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-07-15T20:05:06Z","cross_cats_sorted":[],"title_canon_sha256":"44d0d9bf51539e1cba277b04a0b56d2d9b4b4a4384eabd6dc2c388484e496072","abstract_canon_sha256":"24885d72c5907706627671ada38d3d5ad92cffd9fe4db0bc93243bb27adf382d"},"schema_version":"1.0"},"canonical_sha256":"7d45c8cad92e35cfad4f69f0283036e825a7875b8987eaf1c6ef9eaf05192f6a","source":{"kind":"arxiv","id":"1307.4094","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4094","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4094v1","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4094","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"pith_short_12","alias_value":"PVC4RSWZFY24","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PVC4RSWZFY247LKP","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PVC4RSWZ","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:PVC4RSWZFY247LKPNHYCQMBW5A","target":"record","payload":{"canonical_record":{"source":{"id":"1307.4094","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-07-15T20:05:06Z","cross_cats_sorted":[],"title_canon_sha256":"44d0d9bf51539e1cba277b04a0b56d2d9b4b4a4384eabd6dc2c388484e496072","abstract_canon_sha256":"24885d72c5907706627671ada38d3d5ad92cffd9fe4db0bc93243bb27adf382d"},"schema_version":"1.0"},"canonical_sha256":"7d45c8cad92e35cfad4f69f0283036e825a7875b8987eaf1c6ef9eaf05192f6a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:18:19.689870Z","signature_b64":"njLcrFOzzeIKaAJynNF/eyFwCLZ6iC5S8MFkAG46BIsjJTV2IyGr3ltthNbLkn/vmQQFAxBvZX4xJ4sli1QyDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d45c8cad92e35cfad4f69f0283036e825a7875b8987eaf1c6ef9eaf05192f6a","last_reissued_at":"2026-05-18T03:18:19.689108Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:18:19.689108Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1307.4094","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":"2026-05-18T03:18:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KCizcQqfG27d3Rw9t/2aau+sstwQit+XNavcQxk9YbIANBIzGaekncprUlWtolWuzhlZioJ6yBFmsxCpvwUDBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T06:47:16.369493Z"},"content_sha256":"2f6fa128175ba91a10fa139765ee667590972e93f03659d6697c0e8ba3af35b9","schema_version":"1.0","event_id":"sha256:2f6fa128175ba91a10fa139765ee667590972e93f03659d6697c0e8ba3af35b9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:PVC4RSWZFY247LKPNHYCQMBW5A","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Photometry Study of Open Cluster NGC 7788","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"D. Tasselli","submitted_at":"2013-07-15T20:05:06Z","abstract_excerpt":"A new CCD photometry survey of the open cluster NGC7788 in U, B, V, R and I colors to magnitude V=20 is present. Extensive comparison of our photometry with other published dataset shows excellent agreement, indicating that CCD photometry is capable of producing a uniform set of measurements consistent with the photometric system defined primarily by the Landolt standard sequence. For this study we used the 113 stars considered to be cluster members by Becker on 1965."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4094","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":"2026-05-18T03:18:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"keU+E9VKobyXFcWUk9JraSSg2yft44XXipvZLplSYu9rlgLPzJWyvpSAD+Jv2Py5Dk6XBu/LZ0OhLO83urUZCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-01T06:47:16.369841Z"},"content_sha256":"a0b471cf1acd83a2327bef05c39461efd1a672316b786a50887c2301d3290ed5","schema_version":"1.0","event_id":"sha256:a0b471cf1acd83a2327bef05c39461efd1a672316b786a50887c2301d3290ed5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PVC4RSWZFY247LKPNHYCQMBW5A/bundle.json","state_url":"https://pith.science/pith/PVC4RSWZFY247LKPNHYCQMBW5A/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PVC4RSWZFY247LKPNHYCQMBW5A/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":"2026-07-01T06:47:16Z","links":{"resolver":"https://pith.science/pith/PVC4RSWZFY247LKPNHYCQMBW5A","bundle":"https://pith.science/pith/PVC4RSWZFY247LKPNHYCQMBW5A/bundle.json","state":"https://pith.science/pith/PVC4RSWZFY247LKPNHYCQMBW5A/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PVC4RSWZFY247LKPNHYCQMBW5A/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PVC4RSWZFY247LKPNHYCQMBW5A","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":"24885d72c5907706627671ada38d3d5ad92cffd9fe4db0bc93243bb27adf382d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-07-15T20:05:06Z","title_canon_sha256":"44d0d9bf51539e1cba277b04a0b56d2d9b4b4a4384eabd6dc2c388484e496072"},"schema_version":"1.0","source":{"id":"1307.4094","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1307.4094","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"arxiv_version","alias_value":"1307.4094v1","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1307.4094","created_at":"2026-05-18T03:18:19Z"},{"alias_kind":"pith_short_12","alias_value":"PVC4RSWZFY24","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"PVC4RSWZFY247LKP","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"PVC4RSWZ","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:a0b471cf1acd83a2327bef05c39461efd1a672316b786a50887c2301d3290ed5","target":"graph","created_at":"2026-05-18T03:18:19Z","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":"A new CCD photometry survey of the open cluster NGC7788 in U, B, V, R and I colors to magnitude V=20 is present. Extensive comparison of our photometry with other published dataset shows excellent agreement, indicating that CCD photometry is capable of producing a uniform set of measurements consistent with the photometric system defined primarily by the Landolt standard sequence. For this study we used the 113 stars considered to be cluster members by Becker on 1965.","authors_text":"D. Tasselli","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-07-15T20:05:06Z","title":"Photometry Study of Open Cluster NGC 7788"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1307.4094","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":"sha256:2f6fa128175ba91a10fa139765ee667590972e93f03659d6697c0e8ba3af35b9","target":"record","created_at":"2026-05-18T03:18:19Z","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":"24885d72c5907706627671ada38d3d5ad92cffd9fe4db0bc93243bb27adf382d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2013-07-15T20:05:06Z","title_canon_sha256":"44d0d9bf51539e1cba277b04a0b56d2d9b4b4a4384eabd6dc2c388484e496072"},"schema_version":"1.0","source":{"id":"1307.4094","kind":"arxiv","version":1}},"canonical_sha256":"7d45c8cad92e35cfad4f69f0283036e825a7875b8987eaf1c6ef9eaf05192f6a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d45c8cad92e35cfad4f69f0283036e825a7875b8987eaf1c6ef9eaf05192f6a","first_computed_at":"2026-05-18T03:18:19.689108Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:18:19.689108Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"njLcrFOzzeIKaAJynNF/eyFwCLZ6iC5S8MFkAG46BIsjJTV2IyGr3ltthNbLkn/vmQQFAxBvZX4xJ4sli1QyDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:18:19.689870Z","signed_message":"canonical_sha256_bytes"},"source_id":"1307.4094","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f6fa128175ba91a10fa139765ee667590972e93f03659d6697c0e8ba3af35b9","sha256:a0b471cf1acd83a2327bef05c39461efd1a672316b786a50887c2301d3290ed5"],"state_sha256":"ec7aa06ca94822d00770be9e6c37ebd8989aba99b402c2bf238e5c61c5ae40cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"e+slotLRDfBizQHB+1BrUGaAQ1Qkxl0Jpfr67ord+6L5I1K+feFXeAbjPBXJJIoKtSYyOVUbcPmNpaTaC3z+BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-01T06:47:16.372104Z","bundle_sha256":"ac0764edbab0c1d81dd7c52120d2b85613e0c864f4f3278f7f9b73f0c51952e2"}}