Pith Number

pith:UHK6R7CU

pith:2004:UHK6R7CUOSG6IEPUCIY6IXZHVZ

not attested not anchored not stored refs pending

The A&A Experience With Impact Factors

Aa. Sandqvist (Stockholm Observatory, AlbaNova, Stockholm, Sweden)

arxiv:astro-ph/0403184 v1 · 2004-03-08 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UHK6R7CUOSG6IEPUCIY6IXZHVZ}

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

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	2026-05-17T23:51:26.376952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a1d5e8fc54748de411f41231e45f27ae47c36e5c62e04dc5c7eb2f5c2c165a52

Aliases

arxiv: astro-ph/0403184 · arxiv_version: astro-ph/0403184v1 · doi: 10.48550/arxiv.astro-ph/0403184 · pith_short_12: UHK6R7CUOSG6 · pith_short_16: UHK6R7CUOSG6IEPU · pith_short_8: UHK6R7CU

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/UHK6R7CUOSG6IEPUCIY6IXZHVZ \
  | 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: a1d5e8fc54748de411f41231e45f27ae47c36e5c62e04dc5c7eb2f5c2c165a52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8a7acc64991a44cc4f9651f306faa33222254401c6d5bce759dc9435a2947e6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-03-08T14:34:16Z",
    "title_canon_sha256": "e072a4e06aa1292b7bd552c22512c9d5cefb091da211d8f645d3f0a96ea4aa7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0403184",
    "kind": "arxiv",
    "version": 1
  }
}