{"_canonicalization":{"envelope_id":"axm_ + sha256(envelope minus {signature, axiom_id, anchors})","envelope_signature":"ed25519(envelope minus {signature, axiom_id})","json":"sort_keys=True, separators=(',',':'), ensure_ascii=False, allow_nan=False, utf-8","leaf_hash":"sha256(0x00 || canonical_json(envelope_full))","seal_signature":"ed25519(seal minus {signature, sig_algorithm})"},"axiom_id":"axm_b32ddce21e1e8d75bcc1b44c23eacbb5d6bd0146e5d934161a7bcf254483ab93","bitcoin_anchor":{"bitcoin_attestations":["bitcoin_block_949451"],"calendar_attestations":["https://finney.calendar.eternitywall.com","https://btc.calendar.catallaxy.com","https://alice.btc.calendar.opentimestamps.org","https://bob.btc.calendar.opentimestamps.org"],"ots_url":"/registry/data/substrate/anchors/77fc9c28fae777b81da5b495b3115474df6592dfac590333213d3bdf8b94a9b3.ots","stamped_at":"2026-05-15T03:00:03Z","status":"bitcoin"},"envelope":{"anchors":[{"chain":"crovia.axiom_graph","height":0,"merkle_proof":"31e56c70c3fd344ee117c6d74d9024feb4ff911108a02d718b6a55fe2cfca023","root_at_anchor":"31e56c70c3fd344ee117c6d74d9024feb4ff911108a02d718b6a55fe2cfca023"}],"axiom_id":"axm_b32ddce21e1e8d75bcc1b44c23eacbb5d6bd0146e5d934161a7bcf254483ab93","axiom_type":"AX.OBS","body":{"collector_run_at":"2026-04-26T17:52:16Z","collector_run_id":"wb_441718751c8e43e2","collector_version":"1.0.0","evidence":{"captured_by":"archive.org","memento_rel":"memento","original_url":"https://huggingface.co/facebook/bart-base","wayback_timestamp_14":"20240424134828","wayback_url":"https://web.archive.org/web/20240424134828/https://huggingface.co/facebook/bart-base"},"observation_type":"presence","observed_at":"2024-04-24T13:48:28Z","receipt_hash":"sha256:90b73dc495ebdbbc1eb00f926ac11036e4f051d98dfc5351cbe9889310f3bcea"},"confidence":{"method":"deterministic"},"decision":"POSITIVE","issued_at":"2024-04-24T13:48:28Z","object":{"captured_by":"archive.org","primary_source_url":"https://web.archive.org/web/20240424134828/https://huggingface.co/facebook/bart-base"},"predecessors":[],"schema":"crovia.axiom.v1","signature":"ed25519:e66e7246157a0e637627da46a0bbce5606826b8d473956ea52cad858b0bae1da9dc14031cc689abd3d2f36e6ac9c03bf0e97fc7caeed5fc5fca4b90834bc7f0c","signer":"crovia.substrate","subject":{"source_collector":"wayback_hf_collector","target_id":"facebook/bart-base"},"tsa":{"authority":"crovia.substrate.bootstrap","rfc3161_token":"{\"kind\":\"crovia.bootstrap.tsa\",\"source_jsonl\":\"/opt/crovia/private/wayback/observations.jsonl\",\"source_seal_merkle_root\":\"31e56c70c3fd344ee117c6d74d9024feb4ff911108a02d718b6a55fe2cfca023\",\"upgrade_path\":\"Sessione H \\u2014 OpenTimestamps weekly anchor\"}"},"zk_mode":"clear","zk_proof":null},"ledger":{"leaf_hash":"5fbcc2d36d3f7ef6c062d02f6a900a3761a217bf7ca73b1e72940d7d77f53f32","leaf_index":30,"ledger_path":"/opt/crovia/substrate/axiom_ledger.jsonl"},"merkle_proof":{"hash_alg":"sha256","leaf_prefix":"0x00","node_prefix":"0x01","odd_leaf_rule":"duplicate_last","path":[{"sibling":"5ae2e79489757aeb41ab600f4e247260a3b9817b8563326c2860493163921ebf","side":"right"},{"sibling":"885e3d0d5fc2676e6af4bcee3c2b42e704dafb164363e6b0a91dd865bd4ecea4","side":"left"},{"sibling":"4c2ac1a6f0b08c75b28f7dea784a76f8966ea72c136d917b5522ac21c59206cb","side":"left"},{"sibling":"5d693c1fced016636f212c9998a7f658cdc1d9b378aec488bd3b307ad809ae76","side":"left"},{"sibling":"ff2a8891ae7857366dbb463d11b49039d81a66cd7e53288d29cc46dc4bb8c072","side":"left"},{"sibling":"8c24f273c25eed160253039a34688dbaf5e9200bd6a39867a6921e40670b11b8","side":"right"},{"sibling":"9afb1d0c79c69ebe482686fa5cac8c9948c01e671c02a8c79567f047a935d17a","side":"right"},{"sibling":"f082a1297c6105b176b65ca9199812af54fdbdaca7aad133f679e04609a5d587","side":"right"},{"sibling":"155cdbd617fe05b14d47018aa6714d6df2c00b898def99e6d09bfca504a0027a","side":"right"},{"sibling":"a6065a4fb6e293516eb4fa4f6910b0089b9b6f082773d0a0d0267055375361ca","side":"right"},{"sibling":"f846f12111512873af428f9aad8e356cba278a32d612fd70efb011aa46285907","side":"right"},{"sibling":"623535fc89f53ad08717073be84e8c2bb72ec74d16c1a59664cedcd566d42733","side":"right"},{"sibling":"d9f4787321cb2f66843893e927c7b365218e8b83a8547e752a589dc1146d5584","side":"right"},{"sibling":"726a39776c18e1b1059ddafb85fca25a64a50da3965a9327bd5890bb94829d34","side":"right"},{"sibling":"6851cc5038d4bb734cf48506a6e1655137e1f089817a44d9732da91812c537ad","side":"right"},{"sibling":"b2c325206b89124ba24d2e31ea7d540b6b4614663ea96edf7c615e7cab2d5bf1","side":"right"},{"sibling":"cc0e8d14567fc276aaffc2d1dc980dc8c5f78207f8e67d1a44382c24dfe0c665","side":"right"},{"sibling":"98fc57dfef8873b512edc8340f7181df57302bb96777625e072235c62d7c5895","side":"right"}]},"schema":"crovia.axiom_proof.v1","seal":{"first_collector_run_id":"","first_receipt_hash":"","jsonl_path":"/opt/crovia/substrate/axiom_ledger.jsonl","key_id":"430895f101d38164","last_collector_run_id":"","last_receipt_hash":"","leaf_count":134292,"merkle_root":"77fc9c28fae777b81da5b495b3115474df6592dfac590333213d3bdf8b94a9b3","public_key_hex":"cf742e26f75669dc673cb5c0786a1ae23ae8ca19c347317192ce40c28a7ff25c","run_id":"hourly_json_retrofit_20260515T023701Z","schema":"crovia.seal.v1","seal_family_version":"crovia-seal-family/1","seal_kind":"substrate_batch","sealed_at":"2026-05-15T02:37:25Z","sig_algorithm":"ed25519","signature":"68107a834b00b24f5d4501e5ec727445311f132a486567ecc4c72a4e6dff24c8c21f2de3105293353ba5fdbe370d032819af6aa70f694e2e39b6af6737507009","signer_version":"1.1.0"},"trust_root":{"key_id":"430895f101d38164","public_key_hex":"cf742e26f75669dc673cb5c0786a1ae23ae8ca19c347317192ce40c28a7ff25c","signature_algorithm":"ed25519","url":"/registry/canon/TRUST_ROOT.md"},"verifier":{"spec":"/registry/canon/AXIOM_RECEIPT_v1.md","url":"/v/axm_b32ddce21e1e8d75bcc1b44c23eacbb5d6bd0146e5d934161a7bcf254483ab93"}}