{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:INASBVGZJRNGJDXWU7FDS2DSSY","short_pith_number":"pith:INASBVGZ","canonical_record":{"source":{"id":"1502.06141","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-21T20:16:14Z","cross_cats_sorted":[],"title_canon_sha256":"b740458c057b30aaf39ec2a23dbcfd7e15b69bb72c56f62d9c5994b458c3d038","abstract_canon_sha256":"b03fd86e0df16bd27ea4ef26db4ac41cb9f0dd9cae55b32ee6c3c9ee65378221"},"schema_version":"1.0"},"canonical_sha256":"434120d4d94c5a648ef6a7ca396872963a4fc0fdb82494678d2ba19866881d3b","source":{"kind":"arxiv","id":"1502.06141","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.06141","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"arxiv_version","alias_value":"1502.06141v2","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.06141","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"pith_short_12","alias_value":"INASBVGZJRNG","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"INASBVGZJRNGJDXW","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"INASBVGZ","created_at":"2026-05-18T12:29:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:INASBVGZJRNGJDXWU7FDS2DSSY","target":"record","payload":{"canonical_record":{"source":{"id":"1502.06141","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-21T20:16:14Z","cross_cats_sorted":[],"title_canon_sha256":"b740458c057b30aaf39ec2a23dbcfd7e15b69bb72c56f62d9c5994b458c3d038","abstract_canon_sha256":"b03fd86e0df16bd27ea4ef26db4ac41cb9f0dd9cae55b32ee6c3c9ee65378221"},"schema_version":"1.0"},"canonical_sha256":"434120d4d94c5a648ef6a7ca396872963a4fc0fdb82494678d2ba19866881d3b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:17:21.498041Z","signature_b64":"h/0LAponfnvEo8GnQKLwS+NcYndv5Res8J6rqCA4NxHfAF+hdqXM28CWyqrgp1m3Ch0XREorr5iut/v5j7dpBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"434120d4d94c5a648ef6a7ca396872963a4fc0fdb82494678d2ba19866881d3b","last_reissued_at":"2026-05-18T02:17:21.497144Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:17:21.497144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.06141","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":"2026-05-18T02:17:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QvIF8A9OJUWpHIuFt2QZ3tinMOtmhcT83XkDBrR1r2kkdNzwNykUiuBHKdpb6esLdldyZiZhJXu0pmz/mVVoAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T21:23:10.446575Z"},"content_sha256":"4daf3426d4498d3c94239f8f0d6fc4d19e2f8d53649f82477d26acac86354fbc","schema_version":"1.0","event_id":"sha256:4daf3426d4498d3c94239f8f0d6fc4d19e2f8d53649f82477d26acac86354fbc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:INASBVGZJRNGJDXWU7FDS2DSSY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"$\\hbar$ as a Physical Constant of Classical Optics and Electrodynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Claudine Ni Allen, Nicolas Doyon, Real Tremblay","submitted_at":"2015-02-21T20:16:14Z","abstract_excerpt":"The Planck constant ($\\hbar$) plays a pivotal role in quantum physics. Historically, it has been proposed as postulate, part of a genius empirical relationship $E=\\hbar \\omega$ in order to explain the intensity spectrum of the blackbody radiation for which classical electrodynamic theory led to an unacceptable prediction: The ultraviolet catastrophe. While the usefulness of the Planck constant in various fields of physics is undisputed, its derivation (or lack of) remains unsatisfactory from a fundamental point of view. In this paper, the analysis of the blackbody problem is performed with a s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.06141","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":"2026-05-18T02:17:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iTjCbDEsbAcoatKjvrHqTe94UPpm7Zaycov0zzF6SvNw89aXrVUbk5VTaSpL39QPDDH5vOGwT44ixtdp20Z/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T21:23:10.446917Z"},"content_sha256":"85765af7ccd017879cb07d61268603cc54b3b1a6f74cd844fad4da05b5e569fa","schema_version":"1.0","event_id":"sha256:85765af7ccd017879cb07d61268603cc54b3b1a6f74cd844fad4da05b5e569fa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/INASBVGZJRNGJDXWU7FDS2DSSY/bundle.json","state_url":"https://pith.science/pith/INASBVGZJRNGJDXWU7FDS2DSSY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/INASBVGZJRNGJDXWU7FDS2DSSY/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":"2026-06-29T21:23:10Z","links":{"resolver":"https://pith.science/pith/INASBVGZJRNGJDXWU7FDS2DSSY","bundle":"https://pith.science/pith/INASBVGZJRNGJDXWU7FDS2DSSY/bundle.json","state":"https://pith.science/pith/INASBVGZJRNGJDXWU7FDS2DSSY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/INASBVGZJRNGJDXWU7FDS2DSSY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:INASBVGZJRNGJDXWU7FDS2DSSY","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":"b03fd86e0df16bd27ea4ef26db4ac41cb9f0dd9cae55b32ee6c3c9ee65378221","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-21T20:16:14Z","title_canon_sha256":"b740458c057b30aaf39ec2a23dbcfd7e15b69bb72c56f62d9c5994b458c3d038"},"schema_version":"1.0","source":{"id":"1502.06141","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.06141","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"arxiv_version","alias_value":"1502.06141v2","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.06141","created_at":"2026-05-18T02:17:21Z"},{"alias_kind":"pith_short_12","alias_value":"INASBVGZJRNG","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_16","alias_value":"INASBVGZJRNGJDXW","created_at":"2026-05-18T12:29:25Z"},{"alias_kind":"pith_short_8","alias_value":"INASBVGZ","created_at":"2026-05-18T12:29:25Z"}],"graph_snapshots":[{"event_id":"sha256:85765af7ccd017879cb07d61268603cc54b3b1a6f74cd844fad4da05b5e569fa","target":"graph","created_at":"2026-05-18T02:17:21Z","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":"The Planck constant ($\\hbar$) plays a pivotal role in quantum physics. Historically, it has been proposed as postulate, part of a genius empirical relationship $E=\\hbar \\omega$ in order to explain the intensity spectrum of the blackbody radiation for which classical electrodynamic theory led to an unacceptable prediction: The ultraviolet catastrophe. While the usefulness of the Planck constant in various fields of physics is undisputed, its derivation (or lack of) remains unsatisfactory from a fundamental point of view. In this paper, the analysis of the blackbody problem is performed with a s","authors_text":"Claudine Ni Allen, Nicolas Doyon, Real Tremblay","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-21T20:16:14Z","title":"$\\hbar$ as a Physical Constant of Classical Optics and Electrodynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.06141","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":"sha256:4daf3426d4498d3c94239f8f0d6fc4d19e2f8d53649f82477d26acac86354fbc","target":"record","created_at":"2026-05-18T02:17:21Z","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":"b03fd86e0df16bd27ea4ef26db4ac41cb9f0dd9cae55b32ee6c3c9ee65378221","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2015-02-21T20:16:14Z","title_canon_sha256":"b740458c057b30aaf39ec2a23dbcfd7e15b69bb72c56f62d9c5994b458c3d038"},"schema_version":"1.0","source":{"id":"1502.06141","kind":"arxiv","version":2}},"canonical_sha256":"434120d4d94c5a648ef6a7ca396872963a4fc0fdb82494678d2ba19866881d3b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"434120d4d94c5a648ef6a7ca396872963a4fc0fdb82494678d2ba19866881d3b","first_computed_at":"2026-05-18T02:17:21.497144Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:17:21.497144Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"h/0LAponfnvEo8GnQKLwS+NcYndv5Res8J6rqCA4NxHfAF+hdqXM28CWyqrgp1m3Ch0XREorr5iut/v5j7dpBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:17:21.498041Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.06141","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4daf3426d4498d3c94239f8f0d6fc4d19e2f8d53649f82477d26acac86354fbc","sha256:85765af7ccd017879cb07d61268603cc54b3b1a6f74cd844fad4da05b5e569fa"],"state_sha256":"e80efe2d46bc67662bd9e829a40a4438a6645064c1e3bf95a1ce5673c72fb769"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/5b0GNAq7NBJbCVFs5Sksiiwzzjn9lVAq4Jn9wFo7Cu2FvOMvFTH1FjyBvhVpXgYY7Wf25HcpCbyvCtSv31kDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T21:23:10.448809Z","bundle_sha256":"f98f9781c20df914796ae9c408051710f7f34fb6a49d1375d9cb89365fffdaee"}}