{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:GODTQGLGWS3AP5CJYJSLZMW5EY","short_pith_number":"pith:GODTQGLG","canonical_record":{"source":{"id":"1508.03348","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.CY","submitted_at":"2015-08-13T20:15:14Z","cross_cats_sorted":["cs.SE"],"title_canon_sha256":"3b473745f8004e6b9ed26addf434d5b9b394417cca6c1f63ef1969e02dfd6b7b","abstract_canon_sha256":"a1d1e6ed071bb90fdf370f817eaf06ab7f72e4e15de1bd84b709fd12d03effd5"},"schema_version":"1.0"},"canonical_sha256":"3387381966b4b607f449c264bcb2dd262359626e93cdea20abc1dc151fa097ea","source":{"kind":"arxiv","id":"1508.03348","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.03348","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"arxiv_version","alias_value":"1508.03348v2","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.03348","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"pith_short_12","alias_value":"GODTQGLGWS3A","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GODTQGLGWS3AP5CJ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GODTQGLG","created_at":"2026-05-18T12:29:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:GODTQGLGWS3AP5CJYJSLZMW5EY","target":"record","payload":{"canonical_record":{"source":{"id":"1508.03348","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.CY","submitted_at":"2015-08-13T20:15:14Z","cross_cats_sorted":["cs.SE"],"title_canon_sha256":"3b473745f8004e6b9ed26addf434d5b9b394417cca6c1f63ef1969e02dfd6b7b","abstract_canon_sha256":"a1d1e6ed071bb90fdf370f817eaf06ab7f72e4e15de1bd84b709fd12d03effd5"},"schema_version":"1.0"},"canonical_sha256":"3387381966b4b607f449c264bcb2dd262359626e93cdea20abc1dc151fa097ea","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:35:15.576147Z","signature_b64":"PHDoUl/zUHh3Fo4ZJb3YG0S/3/nYPaHNvYqWM01Uk3IyP+uysJsEjjwN8CPq74kCBF3hWqon10IxZvyEYpexDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3387381966b4b607f449c264bcb2dd262359626e93cdea20abc1dc151fa097ea","last_reissued_at":"2026-05-18T01:35:15.575528Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:35:15.575528Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1508.03348","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":"2026-05-18T01:35:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"g3fHZ9YA2HQ1NQ0znuV9O/H9ztagXXAAiXhZX4cfvxjg7McgAdpCDMW3jDjvLnPekXLCQIpdMNHGiRHrxw8aDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T05:13:08.343458Z"},"content_sha256":"b0ef7119e9f1ec52a40ac34c9f19ec2a24e1ca732ee6942cfbf52344617113b4","schema_version":"1.0","event_id":"sha256:b0ef7119e9f1ec52a40ac34c9f19ec2a24e1ca732ee6942cfbf52344617113b4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:GODTQGLGWS3AP5CJYJSLZMW5EY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Looking at Software Sustainability and Productivity Challenges from NSF","license":"http://creativecommons.org/publicdomain/zero/1.0/","headline":"","cross_cats":["cs.SE"],"primary_cat":"cs.CY","authors_text":"Daniel S. Katz, Rajiv Ramnath","submitted_at":"2015-08-13T20:15:14Z","abstract_excerpt":"This paper is a contribution to the Computational Science & Engineering Software Sustainability and Productivity Challenges (CSESSP Challenges) Workshop (https://www.nitrd.gov/csessp/), sponsored by the Networking and Information Technology Research and Development (NITRD) Software Design and Productivity (SDP) Coordinating Group, held October 15th-16th 2015 in Washington DC, USA. It introduces the role of software at the National Science Foundation (NSF) and the NSF Software Infrastructure for Sustained Innovation (SI2) program, then describes challenges that the SI2 program has identified, i"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.03348","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":"2026-05-18T01:35:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WmSvOPKmhvuz21GZlwfpXC0lxCvvBsUCR+vFqqB/VELWGLtaoQWNYSpAcpx74azm5CYMqK1bzMrnxyT867n1CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T05:13:08.344132Z"},"content_sha256":"e792333fbe3fae3a0ea9043486af03d44c3326afdeba2f8e083899614bd2e22d","schema_version":"1.0","event_id":"sha256:e792333fbe3fae3a0ea9043486af03d44c3326afdeba2f8e083899614bd2e22d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GODTQGLGWS3AP5CJYJSLZMW5EY/bundle.json","state_url":"https://pith.science/pith/GODTQGLGWS3AP5CJYJSLZMW5EY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GODTQGLGWS3AP5CJYJSLZMW5EY/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":"2026-06-08T05:13:08Z","links":{"resolver":"https://pith.science/pith/GODTQGLGWS3AP5CJYJSLZMW5EY","bundle":"https://pith.science/pith/GODTQGLGWS3AP5CJYJSLZMW5EY/bundle.json","state":"https://pith.science/pith/GODTQGLGWS3AP5CJYJSLZMW5EY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GODTQGLGWS3AP5CJYJSLZMW5EY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:GODTQGLGWS3AP5CJYJSLZMW5EY","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":"a1d1e6ed071bb90fdf370f817eaf06ab7f72e4e15de1bd84b709fd12d03effd5","cross_cats_sorted":["cs.SE"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.CY","submitted_at":"2015-08-13T20:15:14Z","title_canon_sha256":"3b473745f8004e6b9ed26addf434d5b9b394417cca6c1f63ef1969e02dfd6b7b"},"schema_version":"1.0","source":{"id":"1508.03348","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.03348","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"arxiv_version","alias_value":"1508.03348v2","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.03348","created_at":"2026-05-18T01:35:15Z"},{"alias_kind":"pith_short_12","alias_value":"GODTQGLGWS3A","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_16","alias_value":"GODTQGLGWS3AP5CJ","created_at":"2026-05-18T12:29:22Z"},{"alias_kind":"pith_short_8","alias_value":"GODTQGLG","created_at":"2026-05-18T12:29:22Z"}],"graph_snapshots":[{"event_id":"sha256:e792333fbe3fae3a0ea9043486af03d44c3326afdeba2f8e083899614bd2e22d","target":"graph","created_at":"2026-05-18T01:35:15Z","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 paper is a contribution to the Computational Science & Engineering Software Sustainability and Productivity Challenges (CSESSP Challenges) Workshop (https://www.nitrd.gov/csessp/), sponsored by the Networking and Information Technology Research and Development (NITRD) Software Design and Productivity (SDP) Coordinating Group, held October 15th-16th 2015 in Washington DC, USA. It introduces the role of software at the National Science Foundation (NSF) and the NSF Software Infrastructure for Sustained Innovation (SI2) program, then describes challenges that the SI2 program has identified, i","authors_text":"Daniel S. Katz, Rajiv Ramnath","cross_cats":["cs.SE"],"headline":"","license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.CY","submitted_at":"2015-08-13T20:15:14Z","title":"Looking at Software Sustainability and Productivity Challenges from NSF"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.03348","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:b0ef7119e9f1ec52a40ac34c9f19ec2a24e1ca732ee6942cfbf52344617113b4","target":"record","created_at":"2026-05-18T01:35:15Z","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":"a1d1e6ed071bb90fdf370f817eaf06ab7f72e4e15de1bd84b709fd12d03effd5","cross_cats_sorted":["cs.SE"],"license":"http://creativecommons.org/publicdomain/zero/1.0/","primary_cat":"cs.CY","submitted_at":"2015-08-13T20:15:14Z","title_canon_sha256":"3b473745f8004e6b9ed26addf434d5b9b394417cca6c1f63ef1969e02dfd6b7b"},"schema_version":"1.0","source":{"id":"1508.03348","kind":"arxiv","version":2}},"canonical_sha256":"3387381966b4b607f449c264bcb2dd262359626e93cdea20abc1dc151fa097ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3387381966b4b607f449c264bcb2dd262359626e93cdea20abc1dc151fa097ea","first_computed_at":"2026-05-18T01:35:15.575528Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:35:15.575528Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PHDoUl/zUHh3Fo4ZJb3YG0S/3/nYPaHNvYqWM01Uk3IyP+uysJsEjjwN8CPq74kCBF3hWqon10IxZvyEYpexDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:35:15.576147Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.03348","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b0ef7119e9f1ec52a40ac34c9f19ec2a24e1ca732ee6942cfbf52344617113b4","sha256:e792333fbe3fae3a0ea9043486af03d44c3326afdeba2f8e083899614bd2e22d"],"state_sha256":"6ca9f4e7b719fd44020b8a8327789483a3c99d02b36e32c410eeeb16fe4fa6d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DmVuTZJDL6MJcwYZAO6n5InIfyfQPke8POykrisWp6mKG3y0wyQmTMC0Cfo/9XDDF4vY66Zs02g9U4JZmERhDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T05:13:08.347771Z","bundle_sha256":"cd859fe8f2365da6305ba313f806c7cb83a5f0a06b91a26acb1565acea5ed346"}}