{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:CW5RHCBW7ZZS26AQOWAC3MGDWJ","short_pith_number":"pith:CW5RHCBW","canonical_record":{"source":{"id":"2002.06950","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-02-17T13:32:55Z","cross_cats_sorted":[],"title_canon_sha256":"479ea13d7f39a6e76715a7fe6a7f38aefdade8b660f002bb348dd2b9a529ceff","abstract_canon_sha256":"727bc263e45f8bd0fede4dc07107d6fa2d6a45d38098fdbfb275190ad6646a74"},"schema_version":"1.0"},"canonical_sha256":"15bb138836fe732d781075802db0c3b26d201532241d22ecf2900f3aec7bc8ad","source":{"kind":"arxiv","id":"2002.06950","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.06950","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"arxiv_version","alias_value":"2002.06950v1","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.06950","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"pith_short_12","alias_value":"CW5RHCBW7ZZS","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"pith_short_16","alias_value":"CW5RHCBW7ZZS26AQ","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"pith_short_8","alias_value":"CW5RHCBW","created_at":"2026-07-05T01:10:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:CW5RHCBW7ZZS26AQOWAC3MGDWJ","target":"record","payload":{"canonical_record":{"source":{"id":"2002.06950","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-02-17T13:32:55Z","cross_cats_sorted":[],"title_canon_sha256":"479ea13d7f39a6e76715a7fe6a7f38aefdade8b660f002bb348dd2b9a529ceff","abstract_canon_sha256":"727bc263e45f8bd0fede4dc07107d6fa2d6a45d38098fdbfb275190ad6646a74"},"schema_version":"1.0"},"canonical_sha256":"15bb138836fe732d781075802db0c3b26d201532241d22ecf2900f3aec7bc8ad","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:10:14.120300Z","signature_b64":"/pE9MDaX4QCjEecIUveUzLLVCFzFn1FcwApYin7tPbM37kDUoXTLzkLHvHioRH0LlzxS+LMSFyhI1JOSUGH2Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"15bb138836fe732d781075802db0c3b26d201532241d22ecf2900f3aec7bc8ad","last_reissued_at":"2026-07-05T01:10:14.119830Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:10:14.119830Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2002.06950","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":"2026-07-05T01:10:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lgEE+EubcimgXIYbwc0QpvkC3HBuZhOoC+X47u20tUA5gg/Rym41aH/tn3R5gbgaQQ+a3aktdpBOglabGhy7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:41:04.455954Z"},"content_sha256":"e26987a242694e803edc3ef00f540dc04d0e23ca903cc781c0949a0e20cc7d5c","schema_version":"1.0","event_id":"sha256:e26987a242694e803edc3ef00f540dc04d0e23ca903cc781c0949a0e20cc7d5c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:CW5RHCBW7ZZS26AQOWAC3MGDWJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Motile dissenters disrupt the flocking of active granular matter","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"A. K. Sood, Pradip K. Bera","submitted_at":"2020-02-17T13:32:55Z","abstract_excerpt":"We report flocking in the dry active granular matter of millimeter-sized two-step-tapered rods without an intervening medium. The system undergoes the flocking phase transition at a threshold area fraction ~ 0.12 having high orientational correlations between the particles. However, the one-step-tapered rods do not flock and are used as the motile dissenters in the flock-forming granular matter. At the critical fraction of dissenters ~ 0.3, the flocking order of the system gets completely destroyed. The variance of the system's order parameter shows a maximum near the dissenter fraction f ~ 0."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.06950","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2002.06950/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":"2026-07-05T01:10:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bbKBrTbrptJLMYWlACOGwJINadtVof8MV8WlvcKNRpMEiKnGUpm8YpOVOeYbyh6rghmZL5fypfl7mAnGZPPXAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-07T08:41:04.456334Z"},"content_sha256":"5084529e998c429773c713eebb09d304e5afe9a7ff7426c46ac8a418c927bb0f","schema_version":"1.0","event_id":"sha256:5084529e998c429773c713eebb09d304e5afe9a7ff7426c46ac8a418c927bb0f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ/bundle.json","state_url":"https://pith.science/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ/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":"2026-07-07T08:41:04Z","links":{"resolver":"https://pith.science/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ","bundle":"https://pith.science/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ/bundle.json","state":"https://pith.science/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CW5RHCBW7ZZS26AQOWAC3MGDWJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:CW5RHCBW7ZZS26AQOWAC3MGDWJ","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":"727bc263e45f8bd0fede4dc07107d6fa2d6a45d38098fdbfb275190ad6646a74","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-02-17T13:32:55Z","title_canon_sha256":"479ea13d7f39a6e76715a7fe6a7f38aefdade8b660f002bb348dd2b9a529ceff"},"schema_version":"1.0","source":{"id":"2002.06950","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2002.06950","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"arxiv_version","alias_value":"2002.06950v1","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2002.06950","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"pith_short_12","alias_value":"CW5RHCBW7ZZS","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"pith_short_16","alias_value":"CW5RHCBW7ZZS26AQ","created_at":"2026-07-05T01:10:14Z"},{"alias_kind":"pith_short_8","alias_value":"CW5RHCBW","created_at":"2026-07-05T01:10:14Z"}],"graph_snapshots":[{"event_id":"sha256:5084529e998c429773c713eebb09d304e5afe9a7ff7426c46ac8a418c927bb0f","target":"graph","created_at":"2026-07-05T01:10:14Z","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/2002.06950/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report flocking in the dry active granular matter of millimeter-sized two-step-tapered rods without an intervening medium. The system undergoes the flocking phase transition at a threshold area fraction ~ 0.12 having high orientational correlations between the particles. However, the one-step-tapered rods do not flock and are used as the motile dissenters in the flock-forming granular matter. At the critical fraction of dissenters ~ 0.3, the flocking order of the system gets completely destroyed. The variance of the system's order parameter shows a maximum near the dissenter fraction f ~ 0.","authors_text":"A. K. Sood, Pradip K. Bera","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-02-17T13:32:55Z","title":"Motile dissenters disrupt the flocking of active granular matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2002.06950","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:e26987a242694e803edc3ef00f540dc04d0e23ca903cc781c0949a0e20cc7d5c","target":"record","created_at":"2026-07-05T01:10:14Z","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":"727bc263e45f8bd0fede4dc07107d6fa2d6a45d38098fdbfb275190ad6646a74","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-02-17T13:32:55Z","title_canon_sha256":"479ea13d7f39a6e76715a7fe6a7f38aefdade8b660f002bb348dd2b9a529ceff"},"schema_version":"1.0","source":{"id":"2002.06950","kind":"arxiv","version":1}},"canonical_sha256":"15bb138836fe732d781075802db0c3b26d201532241d22ecf2900f3aec7bc8ad","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"15bb138836fe732d781075802db0c3b26d201532241d22ecf2900f3aec7bc8ad","first_computed_at":"2026-07-05T01:10:14.119830Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:10:14.119830Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/pE9MDaX4QCjEecIUveUzLLVCFzFn1FcwApYin7tPbM37kDUoXTLzkLHvHioRH0LlzxS+LMSFyhI1JOSUGH2Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:10:14.120300Z","signed_message":"canonical_sha256_bytes"},"source_id":"2002.06950","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e26987a242694e803edc3ef00f540dc04d0e23ca903cc781c0949a0e20cc7d5c","sha256:5084529e998c429773c713eebb09d304e5afe9a7ff7426c46ac8a418c927bb0f"],"state_sha256":"ae60a3c4be3082829d44fc2754e67709e266c27340baa2643f674aa82317937f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ePix2ryr9oxOUMjrwAHyuOXNXZlFmH/hkp9hfAXue/HUCA1dWUzbiBJo3xRPsHM+72sZD1TGqwDDbVRLx//aDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-07T08:41:04.458248Z","bundle_sha256":"19ed4484b9c5f2ccc7001776a271e8073fd3731694b31a2f967a595ce99905ab"}}