Pith Number

pith:X2O7JNQF

pith:2005:X2O7JNQF6VCA63WPZXFHHS4EUL

not attested not anchored not stored refs pending

A Minor Axis Surface Brightness Profile for M31

Annette Ferguson, Geraint Lewis, Mike Irwin, Nial Tanvir, Rodrigo Ibata

arxiv:astro-ph/0505077 v2 · 2005-05-04 · 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{X2O7JNQF6VCA63WPZXFHHS4EUL}

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	2026-07-04T16:52:19.291485Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

be9df4b605f5440f6ecfcdca73cb84a2d3894495a78bd4ddcb6ac44e363e644f

Aliases

arxiv: astro-ph/0505077 · arxiv_version: astro-ph/0505077v2 · doi: 10.48550/arxiv.astro-ph/0505077 · pith_short_12: X2O7JNQF6VCA · pith_short_16: X2O7JNQF6VCA63WP · pith_short_8: X2O7JNQF

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/X2O7JNQF6VCA63WPZXFHHS4EUL \
  | 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: be9df4b605f5440f6ecfcdca73cb84a2d3894495a78bd4ddcb6ac44e363e644f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6973f2009789d5be6a98e703940af07d6c009b9b1cebe9a75445fc138036ddea",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-05-04T16:48:29Z",
    "title_canon_sha256": "c83753b1139b681b486bed7085c8bc11af0f6d34d2f2bad1d97ef920b5c99daa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0505077",
    "kind": "arxiv",
    "version": 2
  }
}