{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:HUZZFDRC67A63RX73ZDHUDKM4D","short_pith_number":"pith:HUZZFDRC","canonical_record":{"source":{"id":"2105.02168","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-05-05T16:29:34Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"bef4f8c5efce197cefbfb025efefe9b410955c116ccacaebb9edea3be14a2206","abstract_canon_sha256":"ef6ebd35c0643123d888274c9a882c97cb62ee737926958c3df929c65621ca61"},"schema_version":"1.0"},"canonical_sha256":"3d33928e22f7c1edc6ffde467a0d4ce0c97cbb9e170d110193d822c711c035d9","source":{"kind":"arxiv","id":"2105.02168","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.02168","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"arxiv_version","alias_value":"2105.02168v2","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.02168","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"pith_short_12","alias_value":"HUZZFDRC67A6","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"pith_short_16","alias_value":"HUZZFDRC67A63RX7","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"pith_short_8","alias_value":"HUZZFDRC","created_at":"2026-07-05T03:27:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:HUZZFDRC67A63RX73ZDHUDKM4D","target":"record","payload":{"canonical_record":{"source":{"id":"2105.02168","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-05-05T16:29:34Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"bef4f8c5efce197cefbfb025efefe9b410955c116ccacaebb9edea3be14a2206","abstract_canon_sha256":"ef6ebd35c0643123d888274c9a882c97cb62ee737926958c3df929c65621ca61"},"schema_version":"1.0"},"canonical_sha256":"3d33928e22f7c1edc6ffde467a0d4ce0c97cbb9e170d110193d822c711c035d9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:27:02.283607Z","signature_b64":"z5nYKB8uaZcHpV8dx4cycTUXugBb8NLeSTZDLuS4JTEfyXkApmOHndn28ITW4MtUM42OegzBTkopb7IwKLKICQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3d33928e22f7c1edc6ffde467a0d4ce0c97cbb9e170d110193d822c711c035d9","last_reissued_at":"2026-07-05T03:27:02.283117Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:27:02.283117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2105.02168","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":"2026-07-05T03:27:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vI7CHrjY+pAz5YXYjLQzAgayxm2wbpGkmJGd6ilHllwd0S7Me7q854KAaUEAbtLvaZdOl2Mj5U30kF9LSR7uDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T09:04:58.853316Z"},"content_sha256":"e84020c6401af023bf7c0f7645faba8c5def2fb56bf40b69073085e9ff0fe23c","schema_version":"1.0","event_id":"sha256:e84020c6401af023bf7c0f7645faba8c5def2fb56bf40b69073085e9ff0fe23c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:HUZZFDRC67A63RX73ZDHUDKM4D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing the dark matter density evolution law with large scale structures","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.CO","authors_text":"Kamal Bora, R. F. L. Holanda, Shantanu Desai","submitted_at":"2021-05-05T16:29:34Z","abstract_excerpt":"We propose a new method to explore a possible departure from the standard time evolution law for the dark matter density. We looked for a violation of this law by using a deformed evolution law, given by $\\rho_c(z) \\propto (1+z)^{3+\\epsilon}$, and then constrain $\\epsilon$. The dataset used for this purpose consists of Strong Gravitational Lensing data obtained from SLOAN Lens ACS, BOSS Emission-line Lens Survey, Strong Legacy Survey SL2S, and SLACS; along with galaxy cluster X-ray gas mass fraction measurements obtained using the Chandra Telescope. Our analyses show that $\\epsilon$ is consist"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.02168","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2105.02168/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":"2026-07-05T03:27:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tdu6lvlrYSDFZazguhzERIRidfC7PSfkVBc4p6feI03IqwXe4nIfojCWcMln/X1SPHAlVuBTNL4xews4v8DMCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T09:04:58.853810Z"},"content_sha256":"33c0718db87f81d95efe73b056b023111f92b7f2c4da0706f62df5c11de26350","schema_version":"1.0","event_id":"sha256:33c0718db87f81d95efe73b056b023111f92b7f2c4da0706f62df5c11de26350"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HUZZFDRC67A63RX73ZDHUDKM4D/bundle.json","state_url":"https://pith.science/pith/HUZZFDRC67A63RX73ZDHUDKM4D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HUZZFDRC67A63RX73ZDHUDKM4D/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":"2026-08-06T09:04:58Z","links":{"resolver":"https://pith.science/pith/HUZZFDRC67A63RX73ZDHUDKM4D","bundle":"https://pith.science/pith/HUZZFDRC67A63RX73ZDHUDKM4D/bundle.json","state":"https://pith.science/pith/HUZZFDRC67A63RX73ZDHUDKM4D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HUZZFDRC67A63RX73ZDHUDKM4D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:HUZZFDRC67A63RX73ZDHUDKM4D","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":"ef6ebd35c0643123d888274c9a882c97cb62ee737926958c3df929c65621ca61","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-05-05T16:29:34Z","title_canon_sha256":"bef4f8c5efce197cefbfb025efefe9b410955c116ccacaebb9edea3be14a2206"},"schema_version":"1.0","source":{"id":"2105.02168","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2105.02168","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"arxiv_version","alias_value":"2105.02168v2","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2105.02168","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"pith_short_12","alias_value":"HUZZFDRC67A6","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"pith_short_16","alias_value":"HUZZFDRC67A63RX7","created_at":"2026-07-05T03:27:02Z"},{"alias_kind":"pith_short_8","alias_value":"HUZZFDRC","created_at":"2026-07-05T03:27:02Z"}],"graph_snapshots":[{"event_id":"sha256:33c0718db87f81d95efe73b056b023111f92b7f2c4da0706f62df5c11de26350","target":"graph","created_at":"2026-07-05T03:27:02Z","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/2105.02168/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We propose a new method to explore a possible departure from the standard time evolution law for the dark matter density. We looked for a violation of this law by using a deformed evolution law, given by $\\rho_c(z) \\propto (1+z)^{3+\\epsilon}$, and then constrain $\\epsilon$. The dataset used for this purpose consists of Strong Gravitational Lensing data obtained from SLOAN Lens ACS, BOSS Emission-line Lens Survey, Strong Legacy Survey SL2S, and SLACS; along with galaxy cluster X-ray gas mass fraction measurements obtained using the Chandra Telescope. Our analyses show that $\\epsilon$ is consist","authors_text":"Kamal Bora, R. F. L. Holanda, Shantanu Desai","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-05-05T16:29:34Z","title":"Probing the dark matter density evolution law with large scale structures"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2105.02168","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:e84020c6401af023bf7c0f7645faba8c5def2fb56bf40b69073085e9ff0fe23c","target":"record","created_at":"2026-07-05T03:27:02Z","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":"ef6ebd35c0643123d888274c9a882c97cb62ee737926958c3df929c65621ca61","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2021-05-05T16:29:34Z","title_canon_sha256":"bef4f8c5efce197cefbfb025efefe9b410955c116ccacaebb9edea3be14a2206"},"schema_version":"1.0","source":{"id":"2105.02168","kind":"arxiv","version":2}},"canonical_sha256":"3d33928e22f7c1edc6ffde467a0d4ce0c97cbb9e170d110193d822c711c035d9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"3d33928e22f7c1edc6ffde467a0d4ce0c97cbb9e170d110193d822c711c035d9","first_computed_at":"2026-07-05T03:27:02.283117Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:27:02.283117Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z5nYKB8uaZcHpV8dx4cycTUXugBb8NLeSTZDLuS4JTEfyXkApmOHndn28ITW4MtUM42OegzBTkopb7IwKLKICQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:27:02.283607Z","signed_message":"canonical_sha256_bytes"},"source_id":"2105.02168","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e84020c6401af023bf7c0f7645faba8c5def2fb56bf40b69073085e9ff0fe23c","sha256:33c0718db87f81d95efe73b056b023111f92b7f2c4da0706f62df5c11de26350"],"state_sha256":"dbe947b19d88f11c17658ab555abe44d2f121a9117e7e44fc7a74c1e5c2fb307"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mZbudlkPASAvt4YFaDNDaCY1AQowdEnA7qE1fAWxcc/FuuddXYNt3x0GzUAwGjVay1jFAxJ5jco7u5mrEd3LAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T09:04:58.857814Z","bundle_sha256":"e4e28e477fde410171e3455c354608033af54fb007c105052f1261d77fd4f5a2"}}