Pith Number

pith:AKPVCDC2

pith:2007:AKPVCDC2SPL6JWZACI4A57TLCP

not attested not anchored not stored refs pending

CaII and NaI absorption signatures from the circumgalactic gas of the Milky Way

M. Murphy, N. Ben Bekhti, P. Richter, T. Westmeier

arxiv:0708.1855 v2 · 2007-08-14 · astro-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{AKPVCDC2SPL6JWZACI4A57TLCP}

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	2026-05-18T02:16:28.706156Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

029f510c5a93d7e4db2012380efe6b13cea2c4d0c749cb777aa2a6a418375f70

Aliases

arxiv: 0708.1855 · arxiv_version: 0708.1855v2 · doi: 10.48550/arxiv.0708.1855 · pith_short_12: AKPVCDC2SPL6 · pith_short_16: AKPVCDC2SPL6JWZA · pith_short_8: AKPVCDC2

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/AKPVCDC2SPL6JWZACI4A57TLCP \
  | 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: 029f510c5a93d7e4db2012380efe6b13cea2c4d0c749cb777aa2a6a418375f70

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03dac3105c11d7ec3d1519b6c5e5b03b3a1a0a8374aee4ce2d303a79a72a5151",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-08-14T09:57:38Z",
    "title_canon_sha256": "bdaf86f20f3d6163592db625c8a2ca46824fa3930cdf5ef3be6ec010355f2c27"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.1855",
    "kind": "arxiv",
    "version": 2
  }
}