Check a pick's record

Every day at 00:15 (Madrid time) we record every pick published the day before in a fingerprint: a hash tree whose root is sealed in Bitcoin with OpenTimestamps. Anyone can check that a pick existed that day with that content, and whether it was changed or deleted later.

Recorded and unchanged

Recorded on 10/13/2026 at 11:07 PM, included in the fingerprint of 10/13/2026.

Pick: #1013611
Tipster: Ontafaro (@Ontafaro)
Event: P1 Milán
Selection: Rodríguez / Dalpozzo · @2.1 · stake 1.5
Fingerprint of 10/13/2026: 77513d56 4616eef4 baa5c499 e6542aac 55844484 651ecd11 68c8a07b d0950e7d
Pick leaf: 1aa58f61 5a2def64 70f65702 c0b9484e 12aefe84 d76b9382 def14957 38b3a40bPosition 569 of 583
Bitcoin seal: Anchored in Bitcoin block 971315. Download the .ots

Inclusion proof (8 steps)

1. right 2345ea967dd38b46c68f3556225e664a470b8238ab82f86a464110c935bc9ed9
2. right 291868381e21ffd294746a55218c12bce4f2cc12cbe99776f2c01a16ab80a589
3. right 91348407ca442c3a2a1b7d9ef2fba70c47eecb97394d264b7ceca0f2e4b5ead7
4. left f19fd185e51675ef33a71262f04c9e2003318822733061ce6915a343ade22338
5. left e4c61b01e5dd01e2f96add325618b38de03985e9a5c6cb531601cb069a5cf36a
6. left 6db44caf5c6131c3bbb94ae3b7baa92eb44f493e1218c46def587439b211fb3f
7. right 4a753ae87805c419f1b8e9c9eae3fd49bfd8beb818e315499554bc79a2bf8ddf
8. left f2f8e5ac51e85a9cdcd9bcc668cbd56f305906b20709ad37ac372e2a628ad591

Recorded content:

["tipsterland-huella-pick",1,1013611,23560,"2026-10-13T21:07:11Z","P1 Milán","2026-10-14T09:00:00Z","Rodríguez / Dalpozzo","2.1","1.5"]

How to check without trusting us: the leaf is SHA-256(0x00 + content) and each step SHA-256(0x01 + left + right). If the path reaches the root and the .ots verifies with the official OpenTimestamps client (ots verify), the pick was recorded that day. This proves when it was published and that it wasn't touched; it says nothing about whether the pick is good.