{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:EMBF5VEEPS3MBKGVS44L6AULLA","short_pith_number":"pith:EMBF5VEE","canonical_record":{"source":{"id":"0707.2608","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-17T22:27:25Z","cross_cats_sorted":[],"title_canon_sha256":"7fbe0ff54aacbd702681bf1081f3236d9ab8f12e185f2990b7a919d8e5522601","abstract_canon_sha256":"3f56fba7dbd788a713de2ea6c3b3dfa90aa8e59d74f50f017d57207d8a404780"},"schema_version":"1.0"},"canonical_sha256":"23025ed4847cb6c0a8d59738bf028b5827b7b791b17edb68f8a5534bda885f02","source":{"kind":"arxiv","id":"0707.2608","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.2608","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"arxiv_version","alias_value":"0707.2608v1","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.2608","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"pith_short_12","alias_value":"EMBF5VEEPS3M","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"pith_short_16","alias_value":"EMBF5VEEPS3MBKGV","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"pith_short_8","alias_value":"EMBF5VEE","created_at":"2026-07-04T15:03:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:EMBF5VEEPS3MBKGVS44L6AULLA","target":"record","payload":{"canonical_record":{"source":{"id":"0707.2608","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-17T22:27:25Z","cross_cats_sorted":[],"title_canon_sha256":"7fbe0ff54aacbd702681bf1081f3236d9ab8f12e185f2990b7a919d8e5522601","abstract_canon_sha256":"3f56fba7dbd788a713de2ea6c3b3dfa90aa8e59d74f50f017d57207d8a404780"},"schema_version":"1.0"},"canonical_sha256":"23025ed4847cb6c0a8d59738bf028b5827b7b791b17edb68f8a5534bda885f02","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:03:07.967395Z","signature_b64":"AXjzqdvqquhqiR11auWomURPXWJ6pJpebTrNXQ9/vaEmSO5KKljjJkvkF/OSjbondDZifcrjkjIrDaCZmkmKBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23025ed4847cb6c0a8d59738bf028b5827b7b791b17edb68f8a5534bda885f02","last_reissued_at":"2026-07-04T15:03:07.967023Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:03:07.967023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0707.2608","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":"2026-07-04T15:03:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"H2EqIGX2teNov0CB1hKf1sUbDJwchEM463N1Pv63yKNxziXb/RBnLuuWo+LWPs0RsZmLLO8S9dWVTIqs2zhLDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:14:11.819189Z"},"content_sha256":"b81e1820731b5e2cbe61fe1f49ab5a07b491f8f22c02c02358572e3e85cfbb53","schema_version":"1.0","event_id":"sha256:b81e1820731b5e2cbe61fe1f49ab5a07b491f8f22c02c02358572e3e85cfbb53"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:EMBF5VEEPS3MBKGVS44L6AULLA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-Wavelength Imaging of Young Stellar Object Disks: Toward an Understanding of Disk Structure and Dust Evolution","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Alan M. Watson, Fran\\c{c}ois M\\'enard, Karl R. Stapelfeldt, Kenneth Wood","submitted_at":"2007-07-17T22:27:25Z","abstract_excerpt":"We review recent progress in high-resolution imaging of scattered light from disks around young stellar objects. Many new disks have been discovered or imaged in scattered light, and improved instrumentation and observing techniques have led to better disk images at optical, near-infrared, and thermal-infrared wavelengths. Multi-wavelength datasets are particularly valuable, as dust particle properties have wavelength dependencies. Modeling the changes in scattered-light images with wavelength gives direct information on the dust properties. This has now been done for several different disks. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.2608","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/0707.2608/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":"2026-07-04T15:03:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eUmBoUqEzspwUPThldnOtcr8b6Pb5fX6Ip/z5wCSusbVH8vouBoSiNnckQRjnbT+aAl1ybFBYnbL50T90GvXCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:14:11.819684Z"},"content_sha256":"98bc5bd6eb572a08c9e50d3fcdf1d170c1c2e143c1b372a52a8f4e360464416f","schema_version":"1.0","event_id":"sha256:98bc5bd6eb572a08c9e50d3fcdf1d170c1c2e143c1b372a52a8f4e360464416f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EMBF5VEEPS3MBKGVS44L6AULLA/bundle.json","state_url":"https://pith.science/pith/EMBF5VEEPS3MBKGVS44L6AULLA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EMBF5VEEPS3MBKGVS44L6AULLA/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":"2026-08-03T21:14:11Z","links":{"resolver":"https://pith.science/pith/EMBF5VEEPS3MBKGVS44L6AULLA","bundle":"https://pith.science/pith/EMBF5VEEPS3MBKGVS44L6AULLA/bundle.json","state":"https://pith.science/pith/EMBF5VEEPS3MBKGVS44L6AULLA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EMBF5VEEPS3MBKGVS44L6AULLA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:EMBF5VEEPS3MBKGVS44L6AULLA","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":"3f56fba7dbd788a713de2ea6c3b3dfa90aa8e59d74f50f017d57207d8a404780","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-17T22:27:25Z","title_canon_sha256":"7fbe0ff54aacbd702681bf1081f3236d9ab8f12e185f2990b7a919d8e5522601"},"schema_version":"1.0","source":{"id":"0707.2608","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.2608","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"arxiv_version","alias_value":"0707.2608v1","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.2608","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"pith_short_12","alias_value":"EMBF5VEEPS3M","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"pith_short_16","alias_value":"EMBF5VEEPS3MBKGV","created_at":"2026-07-04T15:03:07Z"},{"alias_kind":"pith_short_8","alias_value":"EMBF5VEE","created_at":"2026-07-04T15:03:07Z"}],"graph_snapshots":[{"event_id":"sha256:98bc5bd6eb572a08c9e50d3fcdf1d170c1c2e143c1b372a52a8f4e360464416f","target":"graph","created_at":"2026-07-04T15:03:07Z","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/0707.2608/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We review recent progress in high-resolution imaging of scattered light from disks around young stellar objects. Many new disks have been discovered or imaged in scattered light, and improved instrumentation and observing techniques have led to better disk images at optical, near-infrared, and thermal-infrared wavelengths. Multi-wavelength datasets are particularly valuable, as dust particle properties have wavelength dependencies. Modeling the changes in scattered-light images with wavelength gives direct information on the dust properties. This has now been done for several different disks. ","authors_text":"Alan M. Watson, Fran\\c{c}ois M\\'enard, Karl R. Stapelfeldt, Kenneth Wood","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-07-17T22:27:25Z","title":"Multi-Wavelength Imaging of Young Stellar Object Disks: Toward an Understanding of Disk Structure and Dust Evolution"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.2608","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:b81e1820731b5e2cbe61fe1f49ab5a07b491f8f22c02c02358572e3e85cfbb53","target":"record","created_at":"2026-07-04T15:03:07Z","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":"3f56fba7dbd788a713de2ea6c3b3dfa90aa8e59d74f50f017d57207d8a404780","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-17T22:27:25Z","title_canon_sha256":"7fbe0ff54aacbd702681bf1081f3236d9ab8f12e185f2990b7a919d8e5522601"},"schema_version":"1.0","source":{"id":"0707.2608","kind":"arxiv","version":1}},"canonical_sha256":"23025ed4847cb6c0a8d59738bf028b5827b7b791b17edb68f8a5534bda885f02","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23025ed4847cb6c0a8d59738bf028b5827b7b791b17edb68f8a5534bda885f02","first_computed_at":"2026-07-04T15:03:07.967023Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:03:07.967023Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"AXjzqdvqquhqiR11auWomURPXWJ6pJpebTrNXQ9/vaEmSO5KKljjJkvkF/OSjbondDZifcrjkjIrDaCZmkmKBQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:03:07.967395Z","signed_message":"canonical_sha256_bytes"},"source_id":"0707.2608","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b81e1820731b5e2cbe61fe1f49ab5a07b491f8f22c02c02358572e3e85cfbb53","sha256:98bc5bd6eb572a08c9e50d3fcdf1d170c1c2e143c1b372a52a8f4e360464416f"],"state_sha256":"72e0eac513959f3a7d942bb41008713aec585f293d24ed1ac1dbacc4f13e1a9b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RxmEU40aq6FCrcP6NqoT4SsNCICGTVBfoE/3yRHiSNLPt+IjerXY8V7X23jrcsY9uP3+/2PUSE3Cwz/UXisLDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:14:11.823641Z","bundle_sha256":"edffd66caeeb2f71f1548182cb6347e3de435c8f12e0d7ac6a728eda027ffb28"}}