{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PGGO6PXUMQKEJKK54WLNTIJXXA","short_pith_number":"pith:PGGO6PXU","canonical_record":{"source":{"id":"1101.2198","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-01-11T20:40:50Z","cross_cats_sorted":[],"title_canon_sha256":"f24592e64f417f543e7edceccad796ba7e2b9dcc5e5f4758bf0b71f54794d85b","abstract_canon_sha256":"a901e1b4c3cab701a9e23565ba629f29a61d55e9b368005781c9b273f7508cbd"},"schema_version":"1.0"},"canonical_sha256":"798cef3ef4641444a95de596d9a137b8213289f2ac1eb74689fcd9f5a22567f9","source":{"kind":"arxiv","id":"1101.2198","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.2198","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"arxiv_version","alias_value":"1101.2198v1","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.2198","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"pith_short_12","alias_value":"PGGO6PXUMQKE","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PGGO6PXUMQKEJKK5","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PGGO6PXU","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PGGO6PXUMQKEJKK54WLNTIJXXA","target":"record","payload":{"canonical_record":{"source":{"id":"1101.2198","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-01-11T20:40:50Z","cross_cats_sorted":[],"title_canon_sha256":"f24592e64f417f543e7edceccad796ba7e2b9dcc5e5f4758bf0b71f54794d85b","abstract_canon_sha256":"a901e1b4c3cab701a9e23565ba629f29a61d55e9b368005781c9b273f7508cbd"},"schema_version":"1.0"},"canonical_sha256":"798cef3ef4641444a95de596d9a137b8213289f2ac1eb74689fcd9f5a22567f9","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:31:50.759499Z","signature_b64":"hp9hJvIRet2jxmvfaMytecLh5eLKpviFDQnmicmSMxul33bjxGmNDwk1DqD96dYGiry/2TyRvI8QI8FlmBf3CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"798cef3ef4641444a95de596d9a137b8213289f2ac1eb74689fcd9f5a22567f9","last_reissued_at":"2026-05-18T04:31:50.759078Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:31:50.759078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.2198","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":"2026-05-18T04:31:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BKaisAQ4qCoxD1O9vMzJK8vI+JsjRyf8q8bSN2tQKCjU6jc6XRM16WjO48wp6vgmBRnAMulcC0G8/LU1L8Q5Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T09:12:20.159887Z"},"content_sha256":"d8acd8a10c0af9a5f68a51bb99f5b037b791f18c8b47ad7d6861daff72dc34d0","schema_version":"1.0","event_id":"sha256:d8acd8a10c0af9a5f68a51bb99f5b037b791f18c8b47ad7d6861daff72dc34d0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PGGO6PXUMQKEJKK54WLNTIJXXA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Observer Class Hypothesis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Travis Garrett","submitted_at":"2011-01-11T20:40:50Z","abstract_excerpt":"The discovery of a small cosmological constant has stimulated interest in the measure problem. One should expect to be a typical observer, but defining such a thing is difficult in the vastness of an eternally inflating universe. We propose that a crucial prerequisite is understanding why one should exist as an observer at all. We assume that the Physical Church Turing Thesis is correct and therefore all observers (and everything else that exists) can be described as different types of information. We then argue that the observers collectively form the largest class of information (where, in a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.2198","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":"2026-05-18T04:31:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u5xZf5SQ9fL1vrRL/LTT8TADUjZWMFzNDOsvLCGtHDsTmsMKHDGwuUw0vQ1puJpQJzytDXSHrJr9AFUe6a8HBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T09:12:20.160225Z"},"content_sha256":"320894e86f205160e70457042896398470cb2c9b0f14b51ee1698ca261dae74b","schema_version":"1.0","event_id":"sha256:320894e86f205160e70457042896398470cb2c9b0f14b51ee1698ca261dae74b"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PGGO6PXUMQKEJKK54WLNTIJXXA/bundle.json","state_url":"https://pith.science/pith/PGGO6PXUMQKEJKK54WLNTIJXXA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PGGO6PXUMQKEJKK54WLNTIJXXA/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":"2026-07-04T09:12:20Z","links":{"resolver":"https://pith.science/pith/PGGO6PXUMQKEJKK54WLNTIJXXA","bundle":"https://pith.science/pith/PGGO6PXUMQKEJKK54WLNTIJXXA/bundle.json","state":"https://pith.science/pith/PGGO6PXUMQKEJKK54WLNTIJXXA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PGGO6PXUMQKEJKK54WLNTIJXXA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PGGO6PXUMQKEJKK54WLNTIJXXA","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":"a901e1b4c3cab701a9e23565ba629f29a61d55e9b368005781c9b273f7508cbd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-01-11T20:40:50Z","title_canon_sha256":"f24592e64f417f543e7edceccad796ba7e2b9dcc5e5f4758bf0b71f54794d85b"},"schema_version":"1.0","source":{"id":"1101.2198","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.2198","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"arxiv_version","alias_value":"1101.2198v1","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.2198","created_at":"2026-05-18T04:31:50Z"},{"alias_kind":"pith_short_12","alias_value":"PGGO6PXUMQKE","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PGGO6PXUMQKEJKK5","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PGGO6PXU","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:320894e86f205160e70457042896398470cb2c9b0f14b51ee1698ca261dae74b","target":"graph","created_at":"2026-05-18T04:31:50Z","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 discovery of a small cosmological constant has stimulated interest in the measure problem. One should expect to be a typical observer, but defining such a thing is difficult in the vastness of an eternally inflating universe. We propose that a crucial prerequisite is understanding why one should exist as an observer at all. We assume that the Physical Church Turing Thesis is correct and therefore all observers (and everything else that exists) can be described as different types of information. We then argue that the observers collectively form the largest class of information (where, in a","authors_text":"Travis Garrett","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-01-11T20:40:50Z","title":"The Observer Class Hypothesis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.2198","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:d8acd8a10c0af9a5f68a51bb99f5b037b791f18c8b47ad7d6861daff72dc34d0","target":"record","created_at":"2026-05-18T04:31:50Z","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":"a901e1b4c3cab701a9e23565ba629f29a61d55e9b368005781c9b273f7508cbd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2011-01-11T20:40:50Z","title_canon_sha256":"f24592e64f417f543e7edceccad796ba7e2b9dcc5e5f4758bf0b71f54794d85b"},"schema_version":"1.0","source":{"id":"1101.2198","kind":"arxiv","version":1}},"canonical_sha256":"798cef3ef4641444a95de596d9a137b8213289f2ac1eb74689fcd9f5a22567f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"798cef3ef4641444a95de596d9a137b8213289f2ac1eb74689fcd9f5a22567f9","first_computed_at":"2026-05-18T04:31:50.759078Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:31:50.759078Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hp9hJvIRet2jxmvfaMytecLh5eLKpviFDQnmicmSMxul33bjxGmNDwk1DqD96dYGiry/2TyRvI8QI8FlmBf3CQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:31:50.759499Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.2198","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d8acd8a10c0af9a5f68a51bb99f5b037b791f18c8b47ad7d6861daff72dc34d0","sha256:320894e86f205160e70457042896398470cb2c9b0f14b51ee1698ca261dae74b"],"state_sha256":"6b3914088e34fec77d4ad4e69604f0db383cd1677c72f56dcb677027bf5a68b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uY0D7rCn6LE2RbvHsDufGltsCO0sOHP6rtX25ZsIKWrp8bFhA99VlQfYOfqWkF3VotU+9mTfhWOvj9UB7PJGCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T09:12:20.162085Z","bundle_sha256":"081bdf19b7878c5d8ef615581acdae61e70c793a74e2fb2106981ecd2540b7a8"}}