Pith Number

pith:R7X6EN5X

pith:2018:R7X6EN5X7GA2CZEWR5XWTEYSWP

not attested not anchored not stored refs pending

A Formaldehyde Deep Field

Jeremy Darling

arxiv:1810.03690 v1 · 2018-10-08 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R7X6EN5X7GA2CZEWR5XWTEYSWP}

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	2026-05-18T00:03:44.750095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fefe237b7f981a164968f6f699312b3f534936cd3cb6d5704603b4e5dc668f8

Aliases

arxiv: 1810.03690 · arxiv_version: 1810.03690v1 · doi: 10.48550/arxiv.1810.03690 · pith_short_12: R7X6EN5X7GA2 · pith_short_16: R7X6EN5X7GA2CZEW · pith_short_8: R7X6EN5X

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/R7X6EN5X7GA2CZEWR5XWTEYSWP \
  | 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: 8fefe237b7f981a164968f6f699312b3f534936cd3cb6d5704603b4e5dc668f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c20e3f1725518e7a2d4f6051b39680244b02ce903dc8688071532cc84c03f30e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-08T20:36:46Z",
    "title_canon_sha256": "429d87d5376e55160bbf491c8fc7ad567d004284a06d23bd55a3a09bccaed677"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.03690",
    "kind": "arxiv",
    "version": 1
  }
}