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 10/11/2026 at 04:19 PM, included in the fingerprint of 10/11/2026.

Pick: #1012190Paid
Tipster: MarcoF1 Picks (@MarcoF1)
Event: GP de Singapur - Carrera
Selection: Top 6 - Piastri · @2.25 · stake 0.5
Fingerprint of 10/11/2026: da851c69 85bac145 6f471247 5914e20c e61254e5 08f2c6de d59d9f61 8eca6bb0
Pick leaf: 7d591791 dc626d13 5ef9b049 e59a3def b4d93255 e05dfccd 3bb29c9e 7e4a202ePosition 514 of 770
Bitcoin seal: Anchored in Bitcoin block 970990. Download the .ots

Inclusion proof (10 steps)

1. left cf694029c2b1f215e391d9f9bdece657da1fabef3feda1bb38fffba4c0c8f8d9
2. right 761d7606e2254c6555f856ea6f2675e6e074445d4028b866d8c95542c3ac80e4
3. right f43b73cbd1398f27396fcadad45ba4253f86810fa43c30ee0c7ba1a6d8ccf3dc
4. right 49027b90d2357a0b49a8896bd343eaec2898d8f9029cd93b318a70ce41efb156
5. right d0ace2929abcf854d14516b86ed664b99cc257b964cd0c35502a1c93d86a3bde
6. right 7e659571e0c10dbaaaf44156998e5e02c93357150facd5efe52e6ed96fd3fda2
7. right 51fcde9d2ad7a0fd0805e816ac6ce7db0382c3c0f0589eb9e37eeeede8ad5a3c
8. right ad2e308383675d06ac377b39989c6883144dc6258d0c2ed73c85ac830eddeaa5
9. right 74099cbe28da86d15b56865584c11d7ce604c6eb654f94cc3e376c810b3fe2d9
10. left 9ca79a0159b596dbef79d4fe2db3aeb24bd3d27b155860e65dc980850f0b9d01

Recorded content:

["tipsterland-huella-pick",1,1012190,72,"2026-10-11T14:19:21Z","GP de Singapur - Carrera","2026-10-11T12:00:00Z","sha256:d2f3476422c9509af1b88ec16850952a007882fc7b859edce08dc948943ec57b","2.25","0.5"]

Selection nonce: ed5df30eacdf6da9977f851fd3a50f3b

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.