Pith Number

pith:YEIR35HV

pith:2009:YEIR35HVRJVU5NBYPW6PHZ723T

not attested not anchored not stored refs pending

Physical conditions in high-redshift GRB-DLA absorbers observed with VLT/UVES: Implications for molecular hydrogen searches

A. J. Fox, A. Smette, C. Ledoux, J. P. U. Fynbo, P. M. Vreeswijk, P. Petitjean, S. L. Ellison, S. Savaglio

arxiv:0907.1057 v2 · 2009-07-06 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YEIR35HVRJVU5NBYPW6PHZ723T}

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	2026-07-04T17:16:50.735884Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1111df4f58a6b4eb4387dbcf3e7fadcf2a39bb9184be8e81382d1560155571c

Aliases

arxiv: 0907.1057 · arxiv_version: 0907.1057v2 · doi: 10.48550/arxiv.0907.1057 · pith_short_12: YEIR35HVRJVU · pith_short_16: YEIR35HVRJVU5NBY · pith_short_8: YEIR35HV

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/YEIR35HVRJVU5NBYPW6PHZ723T \
  | 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: c1111df4f58a6b4eb4387dbcf3e7fadcf2a39bb9184be8e81382d1560155571c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78189335b58a9b7943566c7c7d491968216102f5bf34ecabc8b65abcf25eaf30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-06T18:01:27Z",
    "title_canon_sha256": "2041ff2949cfc474b855f5b38e7f8cbcc9350187b82482cfedb535d1e29e2b73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1057",
    "kind": "arxiv",
    "version": 2
  }
}