Pith Number

pith:HXYUHDAE

pith:2000:HXYUHDAE4X7CNQ4BHDHII22RGC

not attested not anchored not stored refs pending

Science with SIRTF - Some Examples

Bernhard Brandl, the IRS Team

arxiv:astro-ph/0007300 v1 · 2000-07-20 · 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{HXYUHDAE4X7CNQ4BHDHII22RGC}

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	2026-07-04T14:10:30.789600Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3df1438c04e5fe26c38138ce846b5130984047f41de73ba1e9dfaccf195003e1

Aliases

arxiv: astro-ph/0007300 · arxiv_version: astro-ph/0007300v1 · doi: 10.48550/arxiv.astro-ph/0007300 · pith_short_12: HXYUHDAE4X7C · pith_short_16: HXYUHDAE4X7CNQ4B · pith_short_8: HXYUHDAE

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/HXYUHDAE4X7CNQ4BHDHII22RGC \
  | 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: 3df1438c04e5fe26c38138ce846b5130984047f41de73ba1e9dfaccf195003e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9985d8baaf3d5e04cf67089c4eebc84fd0c1c08ffb261820f0eb1e5b779a4bfc",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-07-20T01:55:42Z",
    "title_canon_sha256": "acbb1a23d97350416c080db2f44b7b4330ba2cf3b1a83b171bd3c3db58c106ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0007300",
    "kind": "arxiv",
    "version": 1
  }
}