Pith Number

pith:U4X64TYL

pith:2020:U4X64TYL5Q4E4H47VMXO7NPM2O

not attested not anchored not stored refs pending

The First Gamma-ray Emitting BL Lacertae Object at the Cosmic Dawn

A. Dom\'inguez, A. Gil de Paz, B. Siana, C. Cabello, C. S. Stalin, D. Hartmann, J. Gallego, M. Ajello, N. Cardiel, Vaidehi S. Paliya

arxiv:2010.12907 v1 · 2020-10-24 · astro-ph.HE · 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{U4X64TYL5Q4E4H47VMXO7NPM2O}

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	2026-07-05T01:50:36.967479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a72fee4f0bec384e1f9fab2eefb5ecd3ab10e4dddca2a2603ea307be3fc46d11

Aliases

arxiv: 2010.12907 · arxiv_version: 2010.12907v1 · doi: 10.48550/arxiv.2010.12907 · pith_short_12: U4X64TYL5Q4E · pith_short_16: U4X64TYL5Q4E4H47 · pith_short_8: U4X64TYL

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/U4X64TYL5Q4E4H47VMXO7NPM2O \
  | 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: a72fee4f0bec384e1f9fab2eefb5ecd3ab10e4dddca2a2603ea307be3fc46d11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88b8a37ceed0eced7c09b14573bd080fb1281b33bf36452b5acbb883088c7777",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-10-24T14:15:36Z",
    "title_canon_sha256": "e36cc04b7bc32f8a107b7a003456bed4ca1d309c04767bb41a1bd60c11a8e6a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2010.12907",
    "kind": "arxiv",
    "version": 1
  }
}