{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:C2W7A4IU75FRZOEHH4XR6J7CEW","short_pith_number":"pith:C2W7A4IU","canonical_record":{"source":{"id":"1605.04794","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-16T15:04:21Z","cross_cats_sorted":[],"title_canon_sha256":"8fdbe286f5f20c17f17491e88838a6c63e39c7b6c1cae0bb17a7bb7397d6d73c","abstract_canon_sha256":"0fddc0e03244ad0f830a6978016299e414fd3c13301e56b1ecaa45c88edba09e"},"schema_version":"1.0"},"canonical_sha256":"16adf07114ff4b1cb8873f2f1f27e225be1fdf0c93c95fd36793d1767cbfa5f7","source":{"kind":"arxiv","id":"1605.04794","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.04794","created_at":"2026-05-18T01:10:29Z"},{"alias_kind":"arxiv_version","alias_value":"1605.04794v1","created_at":"2026-05-18T01:10:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.04794","created_at":"2026-05-18T01:10:29Z"},{"alias_kind":"pith_short_12","alias_value":"C2W7A4IU75FR","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"C2W7A4IU75FRZOEH","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"C2W7A4IU","created_at":"2026-05-18T12:30:09Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:C2W7A4IU75FRZOEHH4XR6J7CEW","target":"record","payload":{"canonical_record":{"source":{"id":"1605.04794","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-16T15:04:21Z","cross_cats_sorted":[],"title_canon_sha256":"8fdbe286f5f20c17f17491e88838a6c63e39c7b6c1cae0bb17a7bb7397d6d73c","abstract_canon_sha256":"0fddc0e03244ad0f830a6978016299e414fd3c13301e56b1ecaa45c88edba09e"},"schema_version":"1.0"},"canonical_sha256":"16adf07114ff4b1cb8873f2f1f27e225be1fdf0c93c95fd36793d1767cbfa5f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:10:29.758424Z","signature_b64":"A9+jsPlvmkRW6SeTw6v1L1GQiW0sc/zEv0KgIATPQTDVaOP+rmg311wjJgrLLgAi/QhRRO4lANBAQqHnlm1MBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"16adf07114ff4b1cb8873f2f1f27e225be1fdf0c93c95fd36793d1767cbfa5f7","last_reissued_at":"2026-05-18T01:10:29.757899Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:10:29.757899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1605.04794","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":"2026-05-18T01:10:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BujqYqkKkMXjvF0kEhqS8mQK5nGyp9RgRrj899a8DsBQWOkHTZdoQG6ixOWgK6qQkbOootnhUwFjHpz5QdbQDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T09:46:21.686105Z"},"content_sha256":"241eb1860c7febbc2dbb4da686ed74ae9545787ac3a6cd0c6a6390bdb926deb3","schema_version":"1.0","event_id":"sha256:241eb1860c7febbc2dbb4da686ed74ae9545787ac3a6cd0c6a6390bdb926deb3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:C2W7A4IU75FRZOEHH4XR6J7CEW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Chromospheric heating by acoustic waves compared to radiative cooling","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"D. Del Moro, F. Berrilli, J. Jur\\v{c}\\'ak, M. Sobotka, M. \\v{S}vanda, P. Heinzel","submitted_at":"2016-05-16T15:04:21Z","abstract_excerpt":"Acoustic and magnetoacoustic waves are among the possible candidate mechanisms that heat the upper layers of solar atmosphere. A weak chromospheric plage near a large solar pore NOAA 11005 was observed on October 15, 2008 in the lines Fe I 617.3 nm and Ca II 853.2 nm with the Interferometric Bidimemsional Spectrometer (IBIS) attached to the Dunn Solar Telescope. Analyzing the Ca II observations with spatial and temporal resolutions of 0.4\" and 52 s, the energy deposited by acoustic waves is compared with that released by radiative losses. The deposited acoustic flux is estimated from power spe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.04794","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":""},"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":"2026-05-18T01:10:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IScWPdxeahiPrYy3Oin4coXxzg8inPZe+eF7810OZn4xnCv8yNIC85xBd02nkfmhZMbjO0aljROg0/QZ/4IYBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T09:46:21.686474Z"},"content_sha256":"87b8fd5f07bd5f08ad98584fb26ffe1e79a7761362a3d2406b1c383cfd6eff2c","schema_version":"1.0","event_id":"sha256:87b8fd5f07bd5f08ad98584fb26ffe1e79a7761362a3d2406b1c383cfd6eff2c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/C2W7A4IU75FRZOEHH4XR6J7CEW/bundle.json","state_url":"https://pith.science/pith/C2W7A4IU75FRZOEHH4XR6J7CEW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/C2W7A4IU75FRZOEHH4XR6J7CEW/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":"2026-06-05T09:46:21Z","links":{"resolver":"https://pith.science/pith/C2W7A4IU75FRZOEHH4XR6J7CEW","bundle":"https://pith.science/pith/C2W7A4IU75FRZOEHH4XR6J7CEW/bundle.json","state":"https://pith.science/pith/C2W7A4IU75FRZOEHH4XR6J7CEW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/C2W7A4IU75FRZOEHH4XR6J7CEW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:C2W7A4IU75FRZOEHH4XR6J7CEW","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":"0fddc0e03244ad0f830a6978016299e414fd3c13301e56b1ecaa45c88edba09e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-16T15:04:21Z","title_canon_sha256":"8fdbe286f5f20c17f17491e88838a6c63e39c7b6c1cae0bb17a7bb7397d6d73c"},"schema_version":"1.0","source":{"id":"1605.04794","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1605.04794","created_at":"2026-05-18T01:10:29Z"},{"alias_kind":"arxiv_version","alias_value":"1605.04794v1","created_at":"2026-05-18T01:10:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.04794","created_at":"2026-05-18T01:10:29Z"},{"alias_kind":"pith_short_12","alias_value":"C2W7A4IU75FR","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_16","alias_value":"C2W7A4IU75FRZOEH","created_at":"2026-05-18T12:30:09Z"},{"alias_kind":"pith_short_8","alias_value":"C2W7A4IU","created_at":"2026-05-18T12:30:09Z"}],"graph_snapshots":[{"event_id":"sha256:87b8fd5f07bd5f08ad98584fb26ffe1e79a7761362a3d2406b1c383cfd6eff2c","target":"graph","created_at":"2026-05-18T01:10:29Z","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":"Acoustic and magnetoacoustic waves are among the possible candidate mechanisms that heat the upper layers of solar atmosphere. A weak chromospheric plage near a large solar pore NOAA 11005 was observed on October 15, 2008 in the lines Fe I 617.3 nm and Ca II 853.2 nm with the Interferometric Bidimemsional Spectrometer (IBIS) attached to the Dunn Solar Telescope. Analyzing the Ca II observations with spatial and temporal resolutions of 0.4\" and 52 s, the energy deposited by acoustic waves is compared with that released by radiative losses. The deposited acoustic flux is estimated from power spe","authors_text":"D. Del Moro, F. Berrilli, J. Jur\\v{c}\\'ak, M. Sobotka, M. \\v{S}vanda, P. Heinzel","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-16T15:04:21Z","title":"Chromospheric heating by acoustic waves compared to radiative cooling"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.04794","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":"sha256:241eb1860c7febbc2dbb4da686ed74ae9545787ac3a6cd0c6a6390bdb926deb3","target":"record","created_at":"2026-05-18T01:10:29Z","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":"0fddc0e03244ad0f830a6978016299e414fd3c13301e56b1ecaa45c88edba09e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-05-16T15:04:21Z","title_canon_sha256":"8fdbe286f5f20c17f17491e88838a6c63e39c7b6c1cae0bb17a7bb7397d6d73c"},"schema_version":"1.0","source":{"id":"1605.04794","kind":"arxiv","version":1}},"canonical_sha256":"16adf07114ff4b1cb8873f2f1f27e225be1fdf0c93c95fd36793d1767cbfa5f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"16adf07114ff4b1cb8873f2f1f27e225be1fdf0c93c95fd36793d1767cbfa5f7","first_computed_at":"2026-05-18T01:10:29.757899Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:10:29.757899Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"A9+jsPlvmkRW6SeTw6v1L1GQiW0sc/zEv0KgIATPQTDVaOP+rmg311wjJgrLLgAi/QhRRO4lANBAQqHnlm1MBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:10:29.758424Z","signed_message":"canonical_sha256_bytes"},"source_id":"1605.04794","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:241eb1860c7febbc2dbb4da686ed74ae9545787ac3a6cd0c6a6390bdb926deb3","sha256:87b8fd5f07bd5f08ad98584fb26ffe1e79a7761362a3d2406b1c383cfd6eff2c"],"state_sha256":"cf342b8417cfc614262bfc53e7be652239052c7f4d52162ef62580e72d105d60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"n8FCo0hlL6VVL5r8KzAx8qfas8SqbV2eIsjltOQPcTgdt0qNe2sLLUy09rMyMKigGN6LgiUVZOEH0koZCS3uBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T09:46:21.688458Z","bundle_sha256":"06327509e070c54cd63095e5b5e21ba26cd6059fdcc1eb69de77b34bbe9c63a9"}}