{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2HMS7ROLR3ONJ43TRDBSP3SGNP","short_pith_number":"pith:2HMS7ROL","canonical_record":{"source":{"id":"1106.6350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-06-30T19:38:20Z","cross_cats_sorted":["hep-ph","nucl-ex"],"title_canon_sha256":"edd63e0c97481f44c7d237f7d8d0d0572940ef8e89fcec9f1ae154eafa3c9ce9","abstract_canon_sha256":"ff8e88252cf36e44419e49b4f7e956209c6e7bfbae60c6c3ac6ede711636cc6d"},"schema_version":"1.0"},"canonical_sha256":"d1d92fc5cb8edcd4f37388c327ee466bfcec45cf2474041830b04666fb8a6133","source":{"kind":"arxiv","id":"1106.6350","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.6350","created_at":"2026-05-18T03:44:02Z"},{"alias_kind":"arxiv_version","alias_value":"1106.6350v1","created_at":"2026-05-18T03:44:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.6350","created_at":"2026-05-18T03:44:02Z"},{"alias_kind":"pith_short_12","alias_value":"2HMS7ROLR3ON","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2HMS7ROLR3ONJ43T","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2HMS7ROL","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2HMS7ROLR3ONJ43TRDBSP3SGNP","target":"record","payload":{"canonical_record":{"source":{"id":"1106.6350","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-06-30T19:38:20Z","cross_cats_sorted":["hep-ph","nucl-ex"],"title_canon_sha256":"edd63e0c97481f44c7d237f7d8d0d0572940ef8e89fcec9f1ae154eafa3c9ce9","abstract_canon_sha256":"ff8e88252cf36e44419e49b4f7e956209c6e7bfbae60c6c3ac6ede711636cc6d"},"schema_version":"1.0"},"canonical_sha256":"d1d92fc5cb8edcd4f37388c327ee466bfcec45cf2474041830b04666fb8a6133","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:44:02.829578Z","signature_b64":"BL1MuZWTXjqaqzaJ/Qh5kN/wdfhfIQEQwi3dD5L8uxFxXmKjBrUvVvzobDc77wl0PAbj8XNWHRwXlpwSuzI2AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d1d92fc5cb8edcd4f37388c327ee466bfcec45cf2474041830b04666fb8a6133","last_reissued_at":"2026-05-18T03:44:02.828786Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:44:02.828786Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1106.6350","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":"2026-05-18T03:44:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lbzRZlpy3JAwWL8DZaJTaDQllSeM5ecG/IQPfvRf+SCxgK6GHj5476pguSdHckZLiaUQz8As/+/e0odPQEniBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T21:59:30.014643Z"},"content_sha256":"7cc9e08c766d07f51f9dca9846a70886a4c35fc1fe078e9bc4ebe266b81f2d5a","schema_version":"1.0","event_id":"sha256:7cc9e08c766d07f51f9dca9846a70886a4c35fc1fe078e9bc4ebe266b81f2d5a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2HMS7ROLR3ONJ43TRDBSP3SGNP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The QGP shear viscosity -- elusive goal or just around the corner?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph","nucl-ex"],"primary_cat":"nucl-th","authors_text":"Chun Shen, Huichao Song, Pasi Huovinen, Steffen A Bass, Tetsufumi Hirano, Ulrich W Heinz, Zhi Qiu","submitted_at":"2011-06-30T19:38:20Z","abstract_excerpt":"With the new viscous hydrodynamic + hadron cascade hybrid code VISHNU, a rather precise (O(25%)) extraction of the QGP shear viscosity (eta/s)_QGP from heavy-ion elliptic flow data is possible if the initial eccentricity of the collision fireball is known with <5% accuracy. At this point, eccentricities from initial state models differ by up to 20%, leading to an O(100%) uncertainty for (eta/s)_QGP. It is shown that a simultaneous comparison of elliptic and triangular flow, v_2 and v_3, puts strong constraints on initial state models and can largely eliminate the present uncertainty in (eta/s)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.6350","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":"2026-05-18T03:44:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xeJma1TKQ/lHUoIptmoCkK9o+eooXb/kyuorQPIMhY6rmHYcsSOUXO5VlpUsBXzdeGOiU9XICwuuGGeBI/XuCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T21:59:30.014995Z"},"content_sha256":"271f6cab1e3e1b8a4f892607c77634f8b061b166b91b279f65fd3efa74e4533e","schema_version":"1.0","event_id":"sha256:271f6cab1e3e1b8a4f892607c77634f8b061b166b91b279f65fd3efa74e4533e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP/bundle.json","state_url":"https://pith.science/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP/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":"2026-06-04T21:59:30Z","links":{"resolver":"https://pith.science/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP","bundle":"https://pith.science/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP/bundle.json","state":"https://pith.science/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2HMS7ROLR3ONJ43TRDBSP3SGNP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2HMS7ROLR3ONJ43TRDBSP3SGNP","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":"ff8e88252cf36e44419e49b4f7e956209c6e7bfbae60c6c3ac6ede711636cc6d","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-06-30T19:38:20Z","title_canon_sha256":"edd63e0c97481f44c7d237f7d8d0d0572940ef8e89fcec9f1ae154eafa3c9ce9"},"schema_version":"1.0","source":{"id":"1106.6350","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1106.6350","created_at":"2026-05-18T03:44:02Z"},{"alias_kind":"arxiv_version","alias_value":"1106.6350v1","created_at":"2026-05-18T03:44:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1106.6350","created_at":"2026-05-18T03:44:02Z"},{"alias_kind":"pith_short_12","alias_value":"2HMS7ROLR3ON","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2HMS7ROLR3ONJ43T","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2HMS7ROL","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:271f6cab1e3e1b8a4f892607c77634f8b061b166b91b279f65fd3efa74e4533e","target":"graph","created_at":"2026-05-18T03:44:02Z","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":"With the new viscous hydrodynamic + hadron cascade hybrid code VISHNU, a rather precise (O(25%)) extraction of the QGP shear viscosity (eta/s)_QGP from heavy-ion elliptic flow data is possible if the initial eccentricity of the collision fireball is known with <5% accuracy. At this point, eccentricities from initial state models differ by up to 20%, leading to an O(100%) uncertainty for (eta/s)_QGP. It is shown that a simultaneous comparison of elliptic and triangular flow, v_2 and v_3, puts strong constraints on initial state models and can largely eliminate the present uncertainty in (eta/s)","authors_text":"Chun Shen, Huichao Song, Pasi Huovinen, Steffen A Bass, Tetsufumi Hirano, Ulrich W Heinz, Zhi Qiu","cross_cats":["hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-06-30T19:38:20Z","title":"The QGP shear viscosity -- elusive goal or just around the corner?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.6350","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":"sha256:7cc9e08c766d07f51f9dca9846a70886a4c35fc1fe078e9bc4ebe266b81f2d5a","target":"record","created_at":"2026-05-18T03:44:02Z","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":"ff8e88252cf36e44419e49b4f7e956209c6e7bfbae60c6c3ac6ede711636cc6d","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2011-06-30T19:38:20Z","title_canon_sha256":"edd63e0c97481f44c7d237f7d8d0d0572940ef8e89fcec9f1ae154eafa3c9ce9"},"schema_version":"1.0","source":{"id":"1106.6350","kind":"arxiv","version":1}},"canonical_sha256":"d1d92fc5cb8edcd4f37388c327ee466bfcec45cf2474041830b04666fb8a6133","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d1d92fc5cb8edcd4f37388c327ee466bfcec45cf2474041830b04666fb8a6133","first_computed_at":"2026-05-18T03:44:02.828786Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:44:02.828786Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BL1MuZWTXjqaqzaJ/Qh5kN/wdfhfIQEQwi3dD5L8uxFxXmKjBrUvVvzobDc77wl0PAbj8XNWHRwXlpwSuzI2AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:44:02.829578Z","signed_message":"canonical_sha256_bytes"},"source_id":"1106.6350","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7cc9e08c766d07f51f9dca9846a70886a4c35fc1fe078e9bc4ebe266b81f2d5a","sha256:271f6cab1e3e1b8a4f892607c77634f8b061b166b91b279f65fd3efa74e4533e"],"state_sha256":"b4d20e63dcbe456eae05174762247f87e4bda3192a672fd0d2fad0ad066af94e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5oBByU3JoEHRd8mlJDujYrB3nQbpOFJ0evxFVLaAHqH6c2+sE98wDUP9skYEck9UzE03rTpTqejKjDgtXEkYDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T21:59:30.017014Z","bundle_sha256":"c5e6cdb76016fe3a46e88f326913f7b77314a7eb5f678195dc4a93c1478750d4"}}