Pith Number

pith:CFKDFY7S

pith:2012:CFKDFY7SA3OAXVKBD6CONUK2CU

not attested not anchored not stored refs pending

Practices in Code Discoverability: Astrophysics Source Code Library

Alice Allen, Lior Shamir, Peter Teuben, Robert J. Nemiroff

arxiv:1202.1028 v1 · 2012-02-06 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CFKDFY7SA3OAXVKBD6CONUK2CU}

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	2026-05-18T04:03:05.359584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

115432e3f206dc0bd5411f84e6d15a15006cb27ac946d092c9ea38a573050294

Aliases

arxiv: 1202.1028 · arxiv_version: 1202.1028v1 · doi: 10.48550/arxiv.1202.1028 · pith_short_12: CFKDFY7SA3OA · pith_short_16: CFKDFY7SA3OAXVKB · pith_short_8: CFKDFY7S

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/CFKDFY7SA3OAXVKBD6CONUK2CU \
  | 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: 115432e3f206dc0bd5411f84e6d15a15006cb27ac946d092c9ea38a573050294

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99b491c7de79d1b4d7d5a2b0bf33e2574cfeb186f41bfee936b70826ff6d70f0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-02-06T01:40:09Z",
    "title_canon_sha256": "b0860a17b15d0ac8015e3e6f1941c36056c813eb18d8270986d69193c9fe994c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1028",
    "kind": "arxiv",
    "version": 1
  }
}