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 10/17/2026 at 11:21 PM, included in the fingerprint of 10/17/2026.

Pick: #1016095
Tipster: Pdeldom (@pdeldom)
Event: Chrono des Nations
Selection: Miguel Heidemann mejor que Txomin Juaristi Arrieta · @1.47 · stake 1.5
Fingerprint of 10/17/2026: 85fe3dbf 7cca5d19 a447c807 58423ff1 d391f435 ededf07c 45e986bd c93e4a86
Pick leaf: 274d3313 43530cdd 1394f92a 63b04d1e ea0cb609 722b5a33 b64f1541 f27b993aPosition 707 of 726
Bitcoin seal: Anchored in Bitcoin block 971914. Download the .ots

Inclusion proof (8 steps)

1. right fad3199ad7c7ceba7581871b818d3c3c1035ec2897a02927b3f78093d9080ec9
2. left 95d3b1bae81375324cb01c0b3483ae822315f23e2ad7d5be9e39b838c879f65e
3. right af0bda87e87108962b9f22e02398422f8e5e213a6b2b4b56086209a0d49bd066
4. right 1f492c7ae61663fb55508fc182b70c22b371ea4278ade7d6b311e27e26600a5f
5. right df0eab4d7b6b2e37c6e1e49ff35ab98484d984d212d219a2a84fa73885a32b67
6. left 5e1134332851c0071b4b26f157fa9264c78f55bbf045d68be53b13e5e4f88daa
7. left 630635aa4e1a0b82b05ab69ded5818dbeb2476c9e7b2657f5e41d37772d6ba79
8. left b0d0931662a433873034531628090cdd0d2e66eeaa858ed5095e954d0ab21941

Recorded content:

["tipsterland-huella-pick",1,1016095,22620,"2026-10-17T21:21:43Z","Chrono des Nations","2026-10-18T12:25:00Z","Miguel Heidemann mejor que Txomin Juaristi Arrieta","1.47","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.