{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2GPDDOZ4YLCYA57XVXHLHT2NTK","short_pith_number":"pith:2GPDDOZ4","canonical_record":{"source":{"id":"1309.1810","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-07T02:56:56Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"8c8553c33965712891b6f61791468c401bee06ea037eca708212a6d8e5af96d6","abstract_canon_sha256":"777fece7bc7cdf60c5c6c67230b439c47f835e458057fa7ed164efc62f9f689e"},"schema_version":"1.0"},"canonical_sha256":"d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7","source":{"kind":"arxiv","id":"1309.1810","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.1810","created_at":"2026-05-18T03:13:57Z"},{"alias_kind":"arxiv_version","alias_value":"1309.1810v1","created_at":"2026-05-18T03:13:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.1810","created_at":"2026-05-18T03:13:57Z"},{"alias_kind":"pith_short_12","alias_value":"2GPDDOZ4YLCY","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2GPDDOZ4YLCYA57X","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2GPDDOZ4","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2GPDDOZ4YLCYA57XVXHLHT2NTK","target":"record","payload":{"canonical_record":{"source":{"id":"1309.1810","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-07T02:56:56Z","cross_cats_sorted":["cs.CY"],"title_canon_sha256":"8c8553c33965712891b6f61791468c401bee06ea037eca708212a6d8e5af96d6","abstract_canon_sha256":"777fece7bc7cdf60c5c6c67230b439c47f835e458057fa7ed164efc62f9f689e"},"schema_version":"1.0"},"canonical_sha256":"d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:57.453780Z","signature_b64":"pAW9NKQLKkRuOdgj6W6VtduQiJ1AJVJgkh3xls1CU4OuINXZHwul7nL0rBUpQrk9itcXz+0YvE85DZWIiuzXDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7","last_reissued_at":"2026-05-18T03:13:57.453079Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:57.453079Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.1810","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":"2026-05-18T03:13:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JAQn4iSb/kQZ/h9z25F5kk15zlS59QbnrSSchiibT02DX4ApqNeK8K8w0LbgRHoqT65jUJMo3TSvtlGnGrUpBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:13:53.640684Z"},"content_sha256":"4cf6989a2d8aee3771bcb29616633fc42b5920a4dfdabedd3ae45046cbd14d3c","schema_version":"1.0","event_id":"sha256:4cf6989a2d8aee3771bcb29616633fc42b5920a4dfdabedd3ae45046cbd14d3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2GPDDOZ4YLCYA57XVXHLHT2NTK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Niche Modeling: Ecological Metaphors for Sustainable Software in Science","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.CY"],"primary_cat":"cs.SE","authors_text":"Andrea Thomer, Michael Twidale, Nicholas Weber","submitted_at":"2013-09-07T02:56:56Z","abstract_excerpt":"This position paper is aimed at providing some history and provocations for the use of an ecological metaphor to describe software development environments. We do not claim that the ecological metaphor is the best or only way of looking at software - rather we want to ask if it can indeed be a productive and thought provoking one."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.1810","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":"2026-05-18T03:13:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IpqpSAM+RnwJZoR2MXXv8lutSUSslvRXpyHvqQ+Ox4X6LeMbx4YLMH/KsnmdOFO0F4GuX21Ti2DQXjRSwer+Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:13:53.641368Z"},"content_sha256":"a2750a571569d1b4bda96748112a7876fceeea745e0dc090d4c9b8d018b08a27","schema_version":"1.0","event_id":"sha256:a2750a571569d1b4bda96748112a7876fceeea745e0dc090d4c9b8d018b08a27"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK/bundle.json","state_url":"https://pith.science/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK/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":"2026-05-26T06:13:53Z","links":{"resolver":"https://pith.science/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK","bundle":"https://pith.science/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK/bundle.json","state":"https://pith.science/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2GPDDOZ4YLCYA57XVXHLHT2NTK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2GPDDOZ4YLCYA57XVXHLHT2NTK","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":"777fece7bc7cdf60c5c6c67230b439c47f835e458057fa7ed164efc62f9f689e","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-07T02:56:56Z","title_canon_sha256":"8c8553c33965712891b6f61791468c401bee06ea037eca708212a6d8e5af96d6"},"schema_version":"1.0","source":{"id":"1309.1810","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.1810","created_at":"2026-05-18T03:13:57Z"},{"alias_kind":"arxiv_version","alias_value":"1309.1810v1","created_at":"2026-05-18T03:13:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.1810","created_at":"2026-05-18T03:13:57Z"},{"alias_kind":"pith_short_12","alias_value":"2GPDDOZ4YLCY","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2GPDDOZ4YLCYA57X","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2GPDDOZ4","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:a2750a571569d1b4bda96748112a7876fceeea745e0dc090d4c9b8d018b08a27","target":"graph","created_at":"2026-05-18T03:13:57Z","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":"This position paper is aimed at providing some history and provocations for the use of an ecological metaphor to describe software development environments. We do not claim that the ecological metaphor is the best or only way of looking at software - rather we want to ask if it can indeed be a productive and thought provoking one.","authors_text":"Andrea Thomer, Michael Twidale, Nicholas Weber","cross_cats":["cs.CY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-07T02:56:56Z","title":"Niche Modeling: Ecological Metaphors for Sustainable Software in Science"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.1810","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":"sha256:4cf6989a2d8aee3771bcb29616633fc42b5920a4dfdabedd3ae45046cbd14d3c","target":"record","created_at":"2026-05-18T03:13:57Z","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":"777fece7bc7cdf60c5c6c67230b439c47f835e458057fa7ed164efc62f9f689e","cross_cats_sorted":["cs.CY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SE","submitted_at":"2013-09-07T02:56:56Z","title_canon_sha256":"8c8553c33965712891b6f61791468c401bee06ea037eca708212a6d8e5af96d6"},"schema_version":"1.0","source":{"id":"1309.1810","kind":"arxiv","version":1}},"canonical_sha256":"d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d19e31bb3cc2c58077f7adceb3cf4d9ab96e34c0dbd1b870e8c71e064fabd3e7","first_computed_at":"2026-05-18T03:13:57.453079Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:13:57.453079Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pAW9NKQLKkRuOdgj6W6VtduQiJ1AJVJgkh3xls1CU4OuINXZHwul7nL0rBUpQrk9itcXz+0YvE85DZWIiuzXDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:13:57.453780Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.1810","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4cf6989a2d8aee3771bcb29616633fc42b5920a4dfdabedd3ae45046cbd14d3c","sha256:a2750a571569d1b4bda96748112a7876fceeea745e0dc090d4c9b8d018b08a27"],"state_sha256":"c428a13f11c184635c89b1100c3a73914a051c19b5854c55217c44446613ab6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pUeHPSgrP3pkMpfAY45wh+Uviw7GkcWdAjexnP+M5vExPQQ+HPGyR+sQdTveMW+bEQmb9Fzsxw9kwtQGQbwhAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:13:53.646307Z","bundle_sha256":"2dcb25ad8318ca7313d98f1bff07e45c5df90fc4675eeb2ea8a30081205d1e3a"}}