Pith Number

pith:F6HCDJ4D

pith:2015:F6HCDJ4D5NUO2QY2KHC4USBHT4

not attested not anchored not stored refs pending

Discovery of two broad absorption line quasars at redshift about 4.75 using the Lijiang 2.4m telescope

Feige Wang, Jinming Bai, Jinyi Yang, Qian Yang, Weimin Yi, Xuebing Wu

arxiv:1511.08278 v1 · 2015-11-26 · 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{F6HCDJ4D5NUO2QY2KHC4USBHT4}

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	2026-05-18T01:25:56.123871Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f8e21a783eb68ed431a51c5ca48279f18422670bdc066b6946c662dd638e92e

Aliases

arxiv: 1511.08278 · arxiv_version: 1511.08278v1 · doi: 10.48550/arxiv.1511.08278 · pith_short_12: F6HCDJ4D5NUO · pith_short_16: F6HCDJ4D5NUO2QY2 · pith_short_8: F6HCDJ4D

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/F6HCDJ4D5NUO2QY2KHC4USBHT4 \
  | 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: 2f8e21a783eb68ed431a51c5ca48279f18422670bdc066b6946c662dd638e92e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de27b230d52c7e5128d393679da33dd0ab9ae8f168b065004048f1e91905f111",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-11-26T03:10:02Z",
    "title_canon_sha256": "9f13cb4953b7d805f12c882976764eebcc7b712a54b9551ee21e4f7d8a80fdad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.08278",
    "kind": "arxiv",
    "version": 1
  }
}