Pith Number

pith:EZ6TO2F3

pith:2015:EZ6TO2F33HFX7C3ROIMQDDVNT4

not attested not anchored not stored refs pending

HST-COS Observations of AGNs. III. Spectral Constraints in the Lyman Continuum from Composite COS/G140L Data

Charles W. Danforth, Evan M. Tilton, J. Michael Shull, Matthew L. Stevans

arxiv:1512.02635 v2 · 2015-12-08 · 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{EZ6TO2F33HFX7C3ROIMQDDVNT4}

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	2026-05-18T01:21:51.073426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

267d3768bbd9cb7f8b717219018ead9f15b59a38c6ba6d436b9c3d0833f27a1e

Aliases

arxiv: 1512.02635 · arxiv_version: 1512.02635v2 · doi: 10.48550/arxiv.1512.02635 · pith_short_12: EZ6TO2F33HFX · pith_short_16: EZ6TO2F33HFX7C3R · pith_short_8: EZ6TO2F3

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/EZ6TO2F33HFX7C3ROIMQDDVNT4 \
  | 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: 267d3768bbd9cb7f8b717219018ead9f15b59a38c6ba6d436b9c3d0833f27a1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "997e52d6be3541a5c9c4e034ae3ae520fd3de504ad6b8eedfa62bbcb7cca2369",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-12-08T21:00:00Z",
    "title_canon_sha256": "b3243f62943b25e0f15e90637d2139e67ecb34809ab33db52c6267bd7ebf3680"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.02635",
    "kind": "arxiv",
    "version": 2
  }
}