Pith Number

pith:XZR2UMK3

pith:2025:XZR2UMK3V2RPRL4PN2BNLVSPYG

not attested not anchored not stored refs pending

A translation of the paper "Presentation of some observations that could be made to shed light on Meteorology" by Johann Heinrich Lambert (1771)

Pascal Marquet

arxiv:2507.13422 v2 · 2025-07-17 · physics.hist-ph · physics.geo-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XZR2UMK3V2RPRL4PN2BNLVSPYG}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T11:46:23.253993Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be63aa315baea2f8af8f6e82d5d64fc1bf873783b1bcb83e3abd453fe46e1893

Aliases

arxiv: 2507.13422 · arxiv_version: 2507.13422v2 · doi: 10.48550/arxiv.2507.13422 · pith_short_12: XZR2UMK3V2RP · pith_short_16: XZR2UMK3V2RPRL4P · pith_short_8: XZR2UMK3

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XZR2UMK3V2RPRL4PN2BNLVSPYG \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: be63aa315baea2f8af8f6e82d5d64fc1bf873783b1bcb83e3abd453fe46e1893

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f07e6ae5957c315298fc584a66bf83bf4e17b044c43bf194534b446168be4d15",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "physics.hist-ph",
    "submitted_at": "2025-07-17T16:38:41Z",
    "title_canon_sha256": "f945d01755b97d2e8afbec58cfd5189703e09b8e9a0e6b83ea26f338e6877be0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.13422",
    "kind": "arxiv",
    "version": 2
  }
}