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 11:59 PM, included in the fingerprint of 10/11/2026.

Pick: #1012446Paid
Tipster: Ferrox (@Ferrox)
Event: Jakub Chmielowski - Filip Mlynarski
Selection: F. Mlynarski · @1.6 · stake 0.5
Fingerprint of 10/11/2026: da851c69 85bac145 6f471247 5914e20c e61254e5 08f2c6de d59d9f61 8eca6bb0
Pick leaf: 58e6dd09 7a2d5fc3 e4ca0c88 c666dd46 29e7d77a f119c1d3 f7c306e4 2ce49b77Position 770 of 770
Bitcoin seal: Anchored in Bitcoin block 970990. Download the .ots

Inclusion proof (3 steps)

1. left 9cad1beafbd75b2a1471eb313eec8ed8799a50c76f57877e2636f24cad274f59
2. left 2561c4570cccffa2576ad68e74737ba1b1286d38effa47abf53b241c6d849acd
3. left 9ca79a0159b596dbef79d4fe2db3aeb24bd3d27b155860e65dc980850f0b9d01

Recorded content:

["tipsterland-huella-pick",1,1012446,19219,"2026-10-11T21:59:46Z","Jakub Chmielowski - Filip Mlynarski","2026-10-11T22:35:00Z","sha256:b7d301f74d099f9540cea694125eac7461dae50adc031a25b9cc38cae317b217","1.6","0.5"]

Selection nonce: d7f54eb25123474e9c21e650da0ece50

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.