{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:7DIVVCCRTXSPVICWSPRAYFM2N4","short_pith_number":"pith:7DIVVCCR","canonical_record":{"source":{"id":"1008.0039","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2010-07-31T00:48:40Z","cross_cats_sorted":["cond-mat.stat-mech","physics.class-ph","physics.hist-ph"],"title_canon_sha256":"fc2eb4af31b2733acb19923ec7af9dd41c18e5c526778c949dd71b4a2d96f771","abstract_canon_sha256":"1c204e951e0fb5e799baa1c006553de0e85c0a0e427e1a6c965686e08f088b65"},"schema_version":"1.0"},"canonical_sha256":"f8d15a88519de4faa05693e20c159a6f2698c783d98c32b86c0153a0cefb905e","source":{"kind":"arxiv","id":"1008.0039","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.0039","created_at":"2026-05-18T02:06:00Z"},{"alias_kind":"arxiv_version","alias_value":"1008.0039v2","created_at":"2026-05-18T02:06:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0039","created_at":"2026-05-18T02:06:00Z"},{"alias_kind":"pith_short_12","alias_value":"7DIVVCCRTXSP","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"7DIVVCCRTXSPVICW","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"7DIVVCCR","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:7DIVVCCRTXSPVICWSPRAYFM2N4","target":"record","payload":{"canonical_record":{"source":{"id":"1008.0039","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2010-07-31T00:48:40Z","cross_cats_sorted":["cond-mat.stat-mech","physics.class-ph","physics.hist-ph"],"title_canon_sha256":"fc2eb4af31b2733acb19923ec7af9dd41c18e5c526778c949dd71b4a2d96f771","abstract_canon_sha256":"1c204e951e0fb5e799baa1c006553de0e85c0a0e427e1a6c965686e08f088b65"},"schema_version":"1.0"},"canonical_sha256":"f8d15a88519de4faa05693e20c159a6f2698c783d98c32b86c0153a0cefb905e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:06:00.682055Z","signature_b64":"qaxZhQYOnOOoxjZhFQZ5mc8NFN1HZ8IKpPDt75W5S+ZO2dioRx5OBgSSjMHp5exP3X8Q7+bV/rr94Ae/k/sECg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8d15a88519de4faa05693e20c159a6f2698c783d98c32b86c0153a0cefb905e","last_reissued_at":"2026-05-18T02:06:00.681539Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:06:00.681539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1008.0039","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":"2026-05-18T02:06:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+hJXmAy5MucT7cvaSOtRojdAlFfaPTez8MvpSOprPU7T5yTSJWZMHTaY9ftTwNnuPnL0kl0VxYAQ1phv4gvZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T08:30:14.291685Z"},"content_sha256":"7833c8c8962ba4118371e84e5a155880d1f850807dcb413bfd9a2f975f31742e","schema_version":"1.0","event_id":"sha256:7833c8c8962ba4118371e84e5a155880d1f850807dcb413bfd9a2f975f31742e"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:7DIVVCCRTXSPVICWSPRAYFM2N4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"What Brown saw and you can too","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","physics.class-ph","physics.hist-ph"],"primary_cat":"physics.pop-ph","authors_text":"Brian Collett, Dara Newman, David Bilderback, Kenneth Bart, Philip Pearle, Scott Samuels","submitted_at":"2010-07-31T00:48:40Z","abstract_excerpt":"A discussion is given of Robert Brown's original observations of particles ejected by pollen of the plant \\textit{Clarkia pulchella} undergoing what is now called Brownian motion. We consider the nature of those particles, and how he misinterpreted the Airy disc of the smallest particles to be universal organic building blocks. Relevant qualitative and quantitative investigations with a modern microscope and with a \"homemade\" single lens microscope similar to Brown's, are presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0039","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":"2026-05-18T02:06:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mUvcvwutnDUpCC04NNSm7Lg0CbE+Ycc3bAfBYklMET+stcazEZbHlFHPMVPDRe256HocVx+GQJj8EJwY6nTrDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T08:30:14.292253Z"},"content_sha256":"47b6dedfa2794c6962f666fd0a7520f38ea825844b504b5aaf488f476d3ae6ca","schema_version":"1.0","event_id":"sha256:47b6dedfa2794c6962f666fd0a7520f38ea825844b504b5aaf488f476d3ae6ca"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7DIVVCCRTXSPVICWSPRAYFM2N4/bundle.json","state_url":"https://pith.science/pith/7DIVVCCRTXSPVICWSPRAYFM2N4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7DIVVCCRTXSPVICWSPRAYFM2N4/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":"2026-06-05T08:30:14Z","links":{"resolver":"https://pith.science/pith/7DIVVCCRTXSPVICWSPRAYFM2N4","bundle":"https://pith.science/pith/7DIVVCCRTXSPVICWSPRAYFM2N4/bundle.json","state":"https://pith.science/pith/7DIVVCCRTXSPVICWSPRAYFM2N4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7DIVVCCRTXSPVICWSPRAYFM2N4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:7DIVVCCRTXSPVICWSPRAYFM2N4","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":"1c204e951e0fb5e799baa1c006553de0e85c0a0e427e1a6c965686e08f088b65","cross_cats_sorted":["cond-mat.stat-mech","physics.class-ph","physics.hist-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2010-07-31T00:48:40Z","title_canon_sha256":"fc2eb4af31b2733acb19923ec7af9dd41c18e5c526778c949dd71b4a2d96f771"},"schema_version":"1.0","source":{"id":"1008.0039","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1008.0039","created_at":"2026-05-18T02:06:00Z"},{"alias_kind":"arxiv_version","alias_value":"1008.0039v2","created_at":"2026-05-18T02:06:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1008.0039","created_at":"2026-05-18T02:06:00Z"},{"alias_kind":"pith_short_12","alias_value":"7DIVVCCRTXSP","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"7DIVVCCRTXSPVICW","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"7DIVVCCR","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:47b6dedfa2794c6962f666fd0a7520f38ea825844b504b5aaf488f476d3ae6ca","target":"graph","created_at":"2026-05-18T02:06:00Z","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":"A discussion is given of Robert Brown's original observations of particles ejected by pollen of the plant \\textit{Clarkia pulchella} undergoing what is now called Brownian motion. We consider the nature of those particles, and how he misinterpreted the Airy disc of the smallest particles to be universal organic building blocks. Relevant qualitative and quantitative investigations with a modern microscope and with a \"homemade\" single lens microscope similar to Brown's, are presented.","authors_text":"Brian Collett, Dara Newman, David Bilderback, Kenneth Bart, Philip Pearle, Scott Samuels","cross_cats":["cond-mat.stat-mech","physics.class-ph","physics.hist-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2010-07-31T00:48:40Z","title":"What Brown saw and you can too"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1008.0039","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":"sha256:7833c8c8962ba4118371e84e5a155880d1f850807dcb413bfd9a2f975f31742e","target":"record","created_at":"2026-05-18T02:06:00Z","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":"1c204e951e0fb5e799baa1c006553de0e85c0a0e427e1a6c965686e08f088b65","cross_cats_sorted":["cond-mat.stat-mech","physics.class-ph","physics.hist-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.pop-ph","submitted_at":"2010-07-31T00:48:40Z","title_canon_sha256":"fc2eb4af31b2733acb19923ec7af9dd41c18e5c526778c949dd71b4a2d96f771"},"schema_version":"1.0","source":{"id":"1008.0039","kind":"arxiv","version":2}},"canonical_sha256":"f8d15a88519de4faa05693e20c159a6f2698c783d98c32b86c0153a0cefb905e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8d15a88519de4faa05693e20c159a6f2698c783d98c32b86c0153a0cefb905e","first_computed_at":"2026-05-18T02:06:00.681539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:06:00.681539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qaxZhQYOnOOoxjZhFQZ5mc8NFN1HZ8IKpPDt75W5S+ZO2dioRx5OBgSSjMHp5exP3X8Q7+bV/rr94Ae/k/sECg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:06:00.682055Z","signed_message":"canonical_sha256_bytes"},"source_id":"1008.0039","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7833c8c8962ba4118371e84e5a155880d1f850807dcb413bfd9a2f975f31742e","sha256:47b6dedfa2794c6962f666fd0a7520f38ea825844b504b5aaf488f476d3ae6ca"],"state_sha256":"8af96c43768a220c5a1ae363c457ecce63e7c7fbced492f57b55c68d77feb09a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NBFq2wl/cqfKOOCYfMlFEpbGjUiUlWR3reKSxk4+sElLChTHXfHoKNxCdZ8USzqRIIV7YOAcRgDMN+KLdXhgBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T08:30:14.294562Z","bundle_sha256":"da3149334262bb54d6b5ab7cc66b24bb8eb59dcb62a69f2aafb461710da77d79"}}