Pith Number

pith:IFMIT7GG

pith:2016:IFMIT7GGBY7J3OYWY3SHMRLXTF

not attested not anchored not stored refs pending

Broadband short term variability of the quasar PDS 456

E. Nardini, F. Tombesi, G. A. Matzeu, J. Gofford, J. N. Reeves, M. T. Costa, V. Braito

arxiv:1604.05891 v1 · 2016-04-20 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IFMIT7GGBY7J3OYWY3SHMRLXTF}

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	2026-05-18T01:16:34.313793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

415889fcc60e3e9dbb16c6e47645779947e8142eff40e33adc8f0ebf7a52dece

Aliases

arxiv: 1604.05891 · arxiv_version: 1604.05891v1 · doi: 10.48550/arxiv.1604.05891 · pith_short_12: IFMIT7GGBY7J · pith_short_16: IFMIT7GGBY7J3OYW · pith_short_8: IFMIT7GG

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/IFMIT7GGBY7J3OYWY3SHMRLXTF \
  | 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: 415889fcc60e3e9dbb16c6e47645779947e8142eff40e33adc8f0ebf7a52dece

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3db043aa614abefc34f724b684c6f04c279f50c84517aaea4f563a2eabc2beb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-04-20T10:57:44Z",
    "title_canon_sha256": "616b74a7f9cf871f2721b3849114fa25729211b4d169158beebd4e23721af876"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05891",
    "kind": "arxiv",
    "version": 1
  }
}