Pith Number

pith:7KIBZRZM

pith:2000:7KIBZRZMCBRSEFMT3LNW4QKAG2

not attested not anchored not stored refs pending

Chandra Observations of M31 and their Implications for its ISM

C. Jones, F. Primini, J. McClintock, M. Garcia, S. Murray, W. Forman

arxiv:astro-ph/0012164 v1 · 2000-12-07 · 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{7KIBZRZMCBRSEFMT3LNW4QKAG2}

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	2026-07-04T14:10:56.450831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa901cc72c1063221593dadb6e4140368428c2a3860a6ee251a3ed17f1396cf1

Aliases

arxiv: astro-ph/0012164 · arxiv_version: astro-ph/0012164v1 · doi: 10.48550/arxiv.astro-ph/0012164 · pith_short_12: 7KIBZRZMCBRS · pith_short_16: 7KIBZRZMCBRSEFMT · pith_short_8: 7KIBZRZM

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/7KIBZRZMCBRSEFMT3LNW4QKAG2 \
  | 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: fa901cc72c1063221593dadb6e4140368428c2a3860a6ee251a3ed17f1396cf1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4822eb427901a3c83f7c4aec06eadd3f984d0de20219459dc7591cda76eb87c5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-12-07T16:04:14Z",
    "title_canon_sha256": "bf46c32c445ed383ccebf24a82de8876ac09e192885158d7897c683e4bebbfa2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0012164",
    "kind": "arxiv",
    "version": 1
  }
}