Pith Number

pith:XIGPE5NP

pith:2012:XIGPE5NPX4H2GJX2EEAPIEXDBO

not attested not anchored not stored refs pending

Galaxy evolution from "dis"integrated light

Jeremy Mould

arxiv:1207.3109 v1 · 2012-07-12 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XIGPE5NPX4H2GJX2EEAPIEXDBO}

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	2026-05-18T01:56:24.135094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ba0cf275afbf0fa326fa2100f412e30baff4835eab08ae633979b3792f822196

Aliases

arxiv: 1207.3109 · arxiv_version: 1207.3109v1 · doi: 10.48550/arxiv.1207.3109 · pith_short_12: XIGPE5NPX4H2 · pith_short_16: XIGPE5NPX4H2GJX2 · pith_short_8: XIGPE5NP

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/XIGPE5NPX4H2GJX2EEAPIEXDBO \
  | 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: ba0cf275afbf0fa326fa2100f412e30baff4835eab08ae633979b3792f822196

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcb3b17dd044bc11cdce7758f79436a93312b6083b8a498733b47177de96533b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-07-12T22:09:30Z",
    "title_canon_sha256": "1ba17c4859923c71ad73946cb77478ba8ba59a987f951864d1490088b5a90ae2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3109",
    "kind": "arxiv",
    "version": 1
  }
}