{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2008:2G6N7OP45HXP23PD3V4IEAXOLG","short_pith_number":"pith:2G6N7OP4","canonical_record":{"source":{"id":"0811.4210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-26T04:22:25Z","cross_cats_sorted":[],"title_canon_sha256":"7745f034836e999b5d302a4f1a6a26fc2d91e98b4926a62bb634527f1dad7669","abstract_canon_sha256":"2abead7a518cd738dbc8120e076121a8d9b5a37bd6a732b185a2a3200da9fb57"},"schema_version":"1.0"},"canonical_sha256":"d1bcdfb9fce9eefd6de3dd788202ee599f47d5edd64ff29da61bf99847d80bc1","source":{"kind":"arxiv","id":"0811.4210","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.4210","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"0811.4210v2","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.4210","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"2G6N7OP45HXP","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"2G6N7OP45HXP23PD","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"2G6N7OP4","created_at":"2026-05-18T12:25:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2008:2G6N7OP45HXP23PD3V4IEAXOLG","target":"record","payload":{"canonical_record":{"source":{"id":"0811.4210","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-26T04:22:25Z","cross_cats_sorted":[],"title_canon_sha256":"7745f034836e999b5d302a4f1a6a26fc2d91e98b4926a62bb634527f1dad7669","abstract_canon_sha256":"2abead7a518cd738dbc8120e076121a8d9b5a37bd6a732b185a2a3200da9fb57"},"schema_version":"1.0"},"canonical_sha256":"d1bcdfb9fce9eefd6de3dd788202ee599f47d5edd64ff29da61bf99847d80bc1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:15:13.093031Z","signature_b64":"RaOlHeeGj5SH8PPPBPVcgQT0WKDWMMH7JooSjavAzOCsqQw5z+2WsEVU5yoBSy+bGbpHYJSRmSEsruXh48WFDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1bcdfb9fce9eefd6de3dd788202ee599f47d5edd64ff29da61bf99847d80bc1","last_reissued_at":"2026-05-18T02:15:13.092387Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:15:13.092387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0811.4210","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":"2026-05-18T02:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DSLW4f44u+sB/xq1xeKNUrlcpzVytsMOoCWg3DLx5lu6rz7IioY6IaUPcfwI4QF5G0F/fbTH3gUgxHfS16KCDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T06:54:11.624547Z"},"content_sha256":"72b967b3ab752fe04ac1538fbed5bb10a8a08d8d279322db103a59ddbd12413f","schema_version":"1.0","event_id":"sha256:72b967b3ab752fe04ac1538fbed5bb10a8a08d8d279322db103a59ddbd12413f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2008:2G6N7OP45HXP23PD3V4IEAXOLG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MASSCLEAN - MASSive CLuster Evolution and ANalysis Package - Description and Tests","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Bogdan Popescu, M.M. Hanson","submitted_at":"2008-11-26T04:22:25Z","abstract_excerpt":"We present MASSCLEAN, a new, sophisticated and robust stellar cluster image and photometry simulation package. This visualization tool is able to create color-magnitude diagrams and standard FITS images in any of the traditional optical and near-infrared bands based on cluster characteristics input by the user, including but not limited to distance, age, mass, radius and extinction. At the limit of very distant, unresolved clusters, we have checked the integrated colors created in MASSCLEAN against those from other simple stellar population models with consistent results. We have also tested m"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.4210","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":""},"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":"2026-05-18T02:15:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SB3Gpz2/20NVcry604M6IuuNxkaAZsuGTOfIg1ZaWKlV58y8E2Cb4hH1gpAOkvyk7vkh6mQq6CmlvAaGWNA3DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T06:54:11.625167Z"},"content_sha256":"e28eae7a42e96540c599356866b2f9a27177226245e8a64ce0701770f4ab7c94","schema_version":"1.0","event_id":"sha256:e28eae7a42e96540c599356866b2f9a27177226245e8a64ce0701770f4ab7c94"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2G6N7OP45HXP23PD3V4IEAXOLG/bundle.json","state_url":"https://pith.science/pith/2G6N7OP45HXP23PD3V4IEAXOLG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2G6N7OP45HXP23PD3V4IEAXOLG/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":"2026-06-05T06:54:11Z","links":{"resolver":"https://pith.science/pith/2G6N7OP45HXP23PD3V4IEAXOLG","bundle":"https://pith.science/pith/2G6N7OP45HXP23PD3V4IEAXOLG/bundle.json","state":"https://pith.science/pith/2G6N7OP45HXP23PD3V4IEAXOLG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2G6N7OP45HXP23PD3V4IEAXOLG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:2G6N7OP45HXP23PD3V4IEAXOLG","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":"2abead7a518cd738dbc8120e076121a8d9b5a37bd6a732b185a2a3200da9fb57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-26T04:22:25Z","title_canon_sha256":"7745f034836e999b5d302a4f1a6a26fc2d91e98b4926a62bb634527f1dad7669"},"schema_version":"1.0","source":{"id":"0811.4210","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0811.4210","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"arxiv_version","alias_value":"0811.4210v2","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0811.4210","created_at":"2026-05-18T02:15:13Z"},{"alias_kind":"pith_short_12","alias_value":"2G6N7OP45HXP","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"2G6N7OP45HXP23PD","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"2G6N7OP4","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:e28eae7a42e96540c599356866b2f9a27177226245e8a64ce0701770f4ab7c94","target":"graph","created_at":"2026-05-18T02:15:13Z","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":"We present MASSCLEAN, a new, sophisticated and robust stellar cluster image and photometry simulation package. This visualization tool is able to create color-magnitude diagrams and standard FITS images in any of the traditional optical and near-infrared bands based on cluster characteristics input by the user, including but not limited to distance, age, mass, radius and extinction. At the limit of very distant, unresolved clusters, we have checked the integrated colors created in MASSCLEAN against those from other simple stellar population models with consistent results. We have also tested m","authors_text":"Bogdan Popescu, M.M. Hanson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-26T04:22:25Z","title":"MASSCLEAN - MASSive CLuster Evolution and ANalysis Package - Description and Tests"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0811.4210","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":"sha256:72b967b3ab752fe04ac1538fbed5bb10a8a08d8d279322db103a59ddbd12413f","target":"record","created_at":"2026-05-18T02:15:13Z","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":"2abead7a518cd738dbc8120e076121a8d9b5a37bd6a732b185a2a3200da9fb57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph","submitted_at":"2008-11-26T04:22:25Z","title_canon_sha256":"7745f034836e999b5d302a4f1a6a26fc2d91e98b4926a62bb634527f1dad7669"},"schema_version":"1.0","source":{"id":"0811.4210","kind":"arxiv","version":2}},"canonical_sha256":"d1bcdfb9fce9eefd6de3dd788202ee599f47d5edd64ff29da61bf99847d80bc1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1bcdfb9fce9eefd6de3dd788202ee599f47d5edd64ff29da61bf99847d80bc1","first_computed_at":"2026-05-18T02:15:13.092387Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:15:13.092387Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RaOlHeeGj5SH8PPPBPVcgQT0WKDWMMH7JooSjavAzOCsqQw5z+2WsEVU5yoBSy+bGbpHYJSRmSEsruXh48WFDw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:15:13.093031Z","signed_message":"canonical_sha256_bytes"},"source_id":"0811.4210","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:72b967b3ab752fe04ac1538fbed5bb10a8a08d8d279322db103a59ddbd12413f","sha256:e28eae7a42e96540c599356866b2f9a27177226245e8a64ce0701770f4ab7c94"],"state_sha256":"9ad2b5003113109ee7dd52d82649062e758e1f9a8c6c26b47961ab71c9979fbc"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ff9xuLVN5bggT489ebwaXOe40x7HWdylzRSoyt4ulWbWR9v6yKseCFTHURVP4lPSfrOxDrIf+FlEiX/BvIgODg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T06:54:11.629060Z","bundle_sha256":"fd250cd4eee0fb62b1440debccc70ccd5fc8739882d35b5ce4e3eadb3fbb42e3"}}