{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2000:KBW42R2GBJ6QOKBRMICVXKXUXY","short_pith_number":"pith:KBW42R2G","canonical_record":{"source":{"id":"nucl-ex/0007005","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2000-07-06T00:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"70d504177a985e22102f68ecc0fa88f897bb1b4c2540bb1c6ee0130e3105f819","abstract_canon_sha256":"86aff7d6e541959123d32feb1c6005aa1a4460c3913db385ca8db28a08b06276"},"schema_version":"1.0"},"canonical_sha256":"506dcd47460a7d07283162055baaf4be0c5fb3890f1f883ca8eb49d957b3813f","source":{"kind":"arxiv","id":"nucl-ex/0007005","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0007005","created_at":"2026-05-18T01:09:07Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0007005v1","created_at":"2026-05-18T01:09:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0007005","created_at":"2026-05-18T01:09:07Z"},{"alias_kind":"pith_short_12","alias_value":"KBW42R2GBJ6Q","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"KBW42R2GBJ6QOKBR","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"KBW42R2G","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2000:KBW42R2GBJ6QOKBRMICVXKXUXY","target":"record","payload":{"canonical_record":{"source":{"id":"nucl-ex/0007005","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-ex","submitted_at":"2000-07-06T00:40:22Z","cross_cats_sorted":[],"title_canon_sha256":"70d504177a985e22102f68ecc0fa88f897bb1b4c2540bb1c6ee0130e3105f819","abstract_canon_sha256":"86aff7d6e541959123d32feb1c6005aa1a4460c3913db385ca8db28a08b06276"},"schema_version":"1.0"},"canonical_sha256":"506dcd47460a7d07283162055baaf4be0c5fb3890f1f883ca8eb49d957b3813f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:07.713615Z","signature_b64":"YCy9bkEKgRi4SXxMdfeYiPzdAppXJDyGFVh0hIG1LvY8B6tlIVyd8nFewS6xbquBGeCXBTTw7o/ykgWAT7/uBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"506dcd47460a7d07283162055baaf4be0c5fb3890f1f883ca8eb49d957b3813f","last_reissued_at":"2026-05-18T01:09:07.712969Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:07.712969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nucl-ex/0007005","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":"2026-05-18T01:09:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LY+l2nCbUtZVoVVyVtjgI0JCseFy+tlPizNqlZ4uMf7DF5YO4Ywlsj5h4JonvTOFtHXDsR9f4hSxr91TqIO0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:21:36.745375Z"},"content_sha256":"6161cbcee1ce424a6862b1d2c2085ed4592f331ba29ba4c6454e5d81f80af295","schema_version":"1.0","event_id":"sha256:6161cbcee1ce424a6862b1d2c2085ed4592f331ba29ba4c6454e5d81f80af295"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2000:KBW42R2GBJ6QOKBRMICVXKXUXY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thermal hard-photons probing multifragmentation in nuclear collisions around the Fermi energy","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"D.G. d'Enterria, G. Mart\\'inez","submitted_at":"2000-07-06T00:40:22Z","abstract_excerpt":"Hard-photon (E$_{\\gamma} >$ 30 MeV) emission issuing from proton-neutron bremsstrahlung collisions is investigated in four different heavy-ion reactions at intermediate bombarding energies ($^{36}$Ar+$^{197}$Au, $^{107}$Ag, $^{58}$Ni, $^{12}$C at 60{\\it A} MeV) coupling the TAPS photon spectrometer with two charged-particle multidetectors covering more than 80% of the solid angle. The hard-photon spectra of the three heavier targets result from the combination of two distinct exponential distributions with different slope parameters, a result which deviates from the behaviour expected for hard"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0007005","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":"2026-05-18T01:09:07Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"d0bUJoVguaJpq2jqwUFFvG7Yx490a7tKFypnSX9UU1EysxOnxzTvUeEy98A1jLoS2WARlnnKRCzCWdmPosqxBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T18:21:36.746066Z"},"content_sha256":"b0123a98ffe4bab8f814efc34f816bfb3335b77e08404b83f869f68c1c5113d1","schema_version":"1.0","event_id":"sha256:b0123a98ffe4bab8f814efc34f816bfb3335b77e08404b83f869f68c1c5113d1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KBW42R2GBJ6QOKBRMICVXKXUXY/bundle.json","state_url":"https://pith.science/pith/KBW42R2GBJ6QOKBRMICVXKXUXY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KBW42R2GBJ6QOKBRMICVXKXUXY/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":"2026-05-26T18:21:36Z","links":{"resolver":"https://pith.science/pith/KBW42R2GBJ6QOKBRMICVXKXUXY","bundle":"https://pith.science/pith/KBW42R2GBJ6QOKBRMICVXKXUXY/bundle.json","state":"https://pith.science/pith/KBW42R2GBJ6QOKBRMICVXKXUXY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KBW42R2GBJ6QOKBRMICVXKXUXY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:KBW42R2GBJ6QOKBRMICVXKXUXY","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":"86aff7d6e541959123d32feb1c6005aa1a4460c3913db385ca8db28a08b06276","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2000-07-06T00:40:22Z","title_canon_sha256":"70d504177a985e22102f68ecc0fa88f897bb1b4c2540bb1c6ee0130e3105f819"},"schema_version":"1.0","source":{"id":"nucl-ex/0007005","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0007005","created_at":"2026-05-18T01:09:07Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0007005v1","created_at":"2026-05-18T01:09:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0007005","created_at":"2026-05-18T01:09:07Z"},{"alias_kind":"pith_short_12","alias_value":"KBW42R2GBJ6Q","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"KBW42R2GBJ6QOKBR","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"KBW42R2G","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:b0123a98ffe4bab8f814efc34f816bfb3335b77e08404b83f869f68c1c5113d1","target":"graph","created_at":"2026-05-18T01:09:07Z","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"},"paper":{"abstract_excerpt":"Hard-photon (E$_{\\gamma} >$ 30 MeV) emission issuing from proton-neutron bremsstrahlung collisions is investigated in four different heavy-ion reactions at intermediate bombarding energies ($^{36}$Ar+$^{197}$Au, $^{107}$Ag, $^{58}$Ni, $^{12}$C at 60{\\it A} MeV) coupling the TAPS photon spectrometer with two charged-particle multidetectors covering more than 80% of the solid angle. The hard-photon spectra of the three heavier targets result from the combination of two distinct exponential distributions with different slope parameters, a result which deviates from the behaviour expected for hard","authors_text":"D.G. d'Enterria, G. Mart\\'inez","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2000-07-06T00:40:22Z","title":"Thermal hard-photons probing multifragmentation in nuclear collisions around the Fermi energy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0007005","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":"sha256:6161cbcee1ce424a6862b1d2c2085ed4592f331ba29ba4c6454e5d81f80af295","target":"record","created_at":"2026-05-18T01:09:07Z","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":"86aff7d6e541959123d32feb1c6005aa1a4460c3913db385ca8db28a08b06276","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2000-07-06T00:40:22Z","title_canon_sha256":"70d504177a985e22102f68ecc0fa88f897bb1b4c2540bb1c6ee0130e3105f819"},"schema_version":"1.0","source":{"id":"nucl-ex/0007005","kind":"arxiv","version":1}},"canonical_sha256":"506dcd47460a7d07283162055baaf4be0c5fb3890f1f883ca8eb49d957b3813f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"506dcd47460a7d07283162055baaf4be0c5fb3890f1f883ca8eb49d957b3813f","first_computed_at":"2026-05-18T01:09:07.712969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:07.712969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"YCy9bkEKgRi4SXxMdfeYiPzdAppXJDyGFVh0hIG1LvY8B6tlIVyd8nFewS6xbquBGeCXBTTw7o/ykgWAT7/uBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:07.713615Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0007005","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6161cbcee1ce424a6862b1d2c2085ed4592f331ba29ba4c6454e5d81f80af295","sha256:b0123a98ffe4bab8f814efc34f816bfb3335b77e08404b83f869f68c1c5113d1"],"state_sha256":"748ce156c5f89749d92f1007f5fe0613da369bb6f6838573d6901e7afe40d185"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"44jYd+RALGfpk6E3KsAR57p6L24xYp3LSpTELb2aCzOZblhxFuKQk2sOwJDcCOZV4u7APJsMKSiYIrguZDiiAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T18:21:36.749618Z","bundle_sha256":"4bc760f974e49618de5f197749c81484ad8f316aa7c678d80adf93bedcd8c1fa"}}