Pith Number

pith:SAGQP6ZA

pith:2007:SAGQP6ZA2LE2P4A5JE3JMYCVY4

not attested not anchored not stored refs pending

Detection of a Stellar Halo in NGC 4244

(2) STScI, (3) U. of Washington), Anil Seth (1), Julianne Dalcanton (3), Roelof De Jong (2), the GHOSTS team ((1) Harvard-Smithsonian CfA

arxiv:astro-ph/0701704 v1 · 2007-01-24 · 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{SAGQP6ZA2LE2P4A5JE3JMYCVY4}

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	2026-07-04T17:07:34.032021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

900d07fb20d2c9a7f01d4936966055c734483f1af74b017810bcc5975e55c522

Aliases

arxiv: astro-ph/0701704 · arxiv_version: astro-ph/0701704v1 · doi: 10.48550/arxiv.astro-ph/0701704 · pith_short_12: SAGQP6ZA2LE2 · pith_short_16: SAGQP6ZA2LE2P4A5 · pith_short_8: SAGQP6ZA

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/SAGQP6ZA2LE2P4A5JE3JMYCVY4 \
  | 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: 900d07fb20d2c9a7f01d4936966055c734483f1af74b017810bcc5975e55c522

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c56489230b7461667f208044dc53cf9dba8e2cd43e58cbbb3453ee1ba0fb67b3",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-24T20:48:33Z",
    "title_canon_sha256": "176509d64cd8ec2c813db943b0d6c4dd4f085791a117466a8407ddd5d410d425"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701704",
    "kind": "arxiv",
    "version": 1
  }
}