{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:PMZ4C53IKVWBXUNMBFZFD4COUX","short_pith_number":"pith:PMZ4C53I","canonical_record":{"source":{"id":"quant-ph/0701176","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2007-01-24T14:02:48Z","cross_cats_sorted":[],"title_canon_sha256":"41f0b5ad8bd6a577a6353a8fe772c6e3d4a3b021409b2ad121edb7b9d299b475","abstract_canon_sha256":"5a8ba634dbc61984caa4832559b75159b103106409375b94ebaff3271a0c5459"},"schema_version":"1.0"},"canonical_sha256":"7b33c17768556c1bd1ac097251f04ea5d2030a2d9d8c0629f205ce6b0c1d691f","source":{"kind":"arxiv","id":"quant-ph/0701176","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0701176","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0701176v1","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0701176","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"pith_short_12","alias_value":"PMZ4C53IKVWB","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"PMZ4C53IKVWBXUNM","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"PMZ4C53I","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:PMZ4C53IKVWBXUNMBFZFD4COUX","target":"record","payload":{"canonical_record":{"source":{"id":"quant-ph/0701176","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2007-01-24T14:02:48Z","cross_cats_sorted":[],"title_canon_sha256":"41f0b5ad8bd6a577a6353a8fe772c6e3d4a3b021409b2ad121edb7b9d299b475","abstract_canon_sha256":"5a8ba634dbc61984caa4832559b75159b103106409375b94ebaff3271a0c5459"},"schema_version":"1.0"},"canonical_sha256":"7b33c17768556c1bd1ac097251f04ea5d2030a2d9d8c0629f205ce6b0c1d691f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:12.934070Z","signature_b64":"XFd75ISW7ToxykECXk/Dr8nxpHUw1hBPgVWFodywtWq/Pr+YtksdyobZ6WRpzPNknSJr0IzPmdi+rQ1Ynv5bAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b33c17768556c1bd1ac097251f04ea5d2030a2d9d8c0629f205ce6b0c1d691f","last_reissued_at":"2026-05-18T01:09:12.933586Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:12.933586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"quant-ph/0701176","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":"2026-05-18T01:09:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mWQuCECYcOaE16soO/47YAQ2srrGLqL0v6rbXwfi+Exvpre9nnBVuVo8J51u8OIfMnkq7oLmP2oFmjD1GQ2rAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T12:17:46.543800Z"},"content_sha256":"481283b110f073f9eb4329f965825c9927b2afaaf80834bb334b077a83349aa0","schema_version":"1.0","event_id":"sha256:481283b110f073f9eb4329f965825c9927b2afaaf80834bb334b077a83349aa0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:PMZ4C53IKVWBXUNMBFZFD4COUX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"First direct determination of the Boltzmann constant by an optical method","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Anne Amy-Klein (LPL), Christian Chardonnet (LPL), Christian J. Bord\\'e (LPL), Christophe Daussy (LPL), Khelifa Djerroud (LPL), Mickael Guinet (LPL), Stephan Briaudeau (LNE-INM CNAM), Yves Hermier (LNE-INM CNAM)","submitted_at":"2007-01-24T14:02:48Z","abstract_excerpt":"We have recorded the Doppler profile of a well-isolated rovibrational line in the \\nu2 band of 14NH3. Ammonia gas was placed in an absorption cell thermalized by a water-ice bath. By extrapolating to zero pressure, we have deduced the Doppler width which gives a first measurement of the Boltzmann constant, kB, by laser spectroscopy. A relative uncertainty of 2x10-4 has been obtained. The present determination should be significantly improved in the near future and contribute to a new definition of the kelvin."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0701176","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":"2026-05-18T01:09:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hWLyS1LtZKM6I9zwUe3j9p+R8zU9EW8cCo9gVHdo2xgdWxq+ZaCcN5ydOJQzSHl+g7Em8oWYzi+BCaR9Ujm+DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T12:17:46.544134Z"},"content_sha256":"ad205f5a9e134260d800ddc5da64c5d574e85fe25548c8ffafaa24497604b942","schema_version":"1.0","event_id":"sha256:ad205f5a9e134260d800ddc5da64c5d574e85fe25548c8ffafaa24497604b942"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PMZ4C53IKVWBXUNMBFZFD4COUX/bundle.json","state_url":"https://pith.science/pith/PMZ4C53IKVWBXUNMBFZFD4COUX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PMZ4C53IKVWBXUNMBFZFD4COUX/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":"2026-06-20T12:17:46Z","links":{"resolver":"https://pith.science/pith/PMZ4C53IKVWBXUNMBFZFD4COUX","bundle":"https://pith.science/pith/PMZ4C53IKVWBXUNMBFZFD4COUX/bundle.json","state":"https://pith.science/pith/PMZ4C53IKVWBXUNMBFZFD4COUX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PMZ4C53IKVWBXUNMBFZFD4COUX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:PMZ4C53IKVWBXUNMBFZFD4COUX","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":"5a8ba634dbc61984caa4832559b75159b103106409375b94ebaff3271a0c5459","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2007-01-24T14:02:48Z","title_canon_sha256":"41f0b5ad8bd6a577a6353a8fe772c6e3d4a3b021409b2ad121edb7b9d299b475"},"schema_version":"1.0","source":{"id":"quant-ph/0701176","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0701176","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0701176v1","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0701176","created_at":"2026-05-18T01:09:12Z"},{"alias_kind":"pith_short_12","alias_value":"PMZ4C53IKVWB","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"PMZ4C53IKVWBXUNM","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"PMZ4C53I","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:ad205f5a9e134260d800ddc5da64c5d574e85fe25548c8ffafaa24497604b942","target":"graph","created_at":"2026-05-18T01:09:12Z","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":"We have recorded the Doppler profile of a well-isolated rovibrational line in the \\nu2 band of 14NH3. Ammonia gas was placed in an absorption cell thermalized by a water-ice bath. By extrapolating to zero pressure, we have deduced the Doppler width which gives a first measurement of the Boltzmann constant, kB, by laser spectroscopy. A relative uncertainty of 2x10-4 has been obtained. The present determination should be significantly improved in the near future and contribute to a new definition of the kelvin.","authors_text":"Anne Amy-Klein (LPL), Christian Chardonnet (LPL), Christian J. Bord\\'e (LPL), Christophe Daussy (LPL), Khelifa Djerroud (LPL), Mickael Guinet (LPL), Stephan Briaudeau (LNE-INM CNAM), Yves Hermier (LNE-INM CNAM)","cross_cats":[],"headline":"","license":"","primary_cat":"quant-ph","submitted_at":"2007-01-24T14:02:48Z","title":"First direct determination of the Boltzmann constant by an optical method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0701176","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":"sha256:481283b110f073f9eb4329f965825c9927b2afaaf80834bb334b077a83349aa0","target":"record","created_at":"2026-05-18T01:09:12Z","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":"5a8ba634dbc61984caa4832559b75159b103106409375b94ebaff3271a0c5459","cross_cats_sorted":[],"license":"","primary_cat":"quant-ph","submitted_at":"2007-01-24T14:02:48Z","title_canon_sha256":"41f0b5ad8bd6a577a6353a8fe772c6e3d4a3b021409b2ad121edb7b9d299b475"},"schema_version":"1.0","source":{"id":"quant-ph/0701176","kind":"arxiv","version":1}},"canonical_sha256":"7b33c17768556c1bd1ac097251f04ea5d2030a2d9d8c0629f205ce6b0c1d691f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b33c17768556c1bd1ac097251f04ea5d2030a2d9d8c0629f205ce6b0c1d691f","first_computed_at":"2026-05-18T01:09:12.933586Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:12.933586Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XFd75ISW7ToxykECXk/Dr8nxpHUw1hBPgVWFodywtWq/Pr+YtksdyobZ6WRpzPNknSJr0IzPmdi+rQ1Ynv5bAg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:12.934070Z","signed_message":"canonical_sha256_bytes"},"source_id":"quant-ph/0701176","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:481283b110f073f9eb4329f965825c9927b2afaaf80834bb334b077a83349aa0","sha256:ad205f5a9e134260d800ddc5da64c5d574e85fe25548c8ffafaa24497604b942"],"state_sha256":"c65a8496e91d525b6d1884c59e7984b5d4c633d63769a5b012a6f2613332313f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oJNrQ7lw5TQYeMYkz8kuDPO3gZ0ojAd8sCZwkG3iK2bKqI2X4AL9sT36PhavoNIVk2KjyVLkf/6dLCNx3aVnAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T12:17:46.545938Z","bundle_sha256":"e2963add4775691089894e2832ee3a18586574d7f07097154aa6cd9b76829880"}}