Los tramposos ("The cheaters") is a 1959 Spanish comedy film directed by Pedro Lazaga and starring Tony Leblanc and Antonio Ozores. The movie is about two small-time con-men. Plot Two small-time con
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0461faac51401e7eb20dd31eccd531f6591b9e1963fe60a0316493577c432dce. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29c0615d-c3ea-4edd-b9ff-0393d5d4f1dd.json and https://artists.proofprofile.net/proofs/artist/29c0615d-c3ea-4edd-b9ff-0393d5d4f1dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63314ce83afdb72479c1752977787cadb8dd5e8ff61318ea408bef96f27dc47. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1815628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe4881f70cac3b2c9b2ae4ed43d5d6d2e11d6ef7a6afd615259a7de5cac0a50. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1815632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027160cd7d2babf529a20781e02bd2cf2ac885d94271b3ff9d7543e5f4c863d1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1816379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a2aa02eb6d5bc45f1cd5e940e1b3636007f8832ca5b8a553b323562ce3ccb2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5664e9bbee053d109895ac51160a9eea574c040764b6c263241df5cb437121a0. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2318b28f6fdc41e3d1ae4a2e7c3bfee064a8edac84d1b8d8ee0c19b99c7312ca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5995187f5ee5ea4a3c6be259ff935d3e880da1ea2f32df536dff1b0a9041ca2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83755f0843f4ba7c8244537253262f5ce06a817d695f1a3524858cd6a3d47bff. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06b4ee80c3c61dfc83b8c01805dbb7b42e6d1a38f598904861aa30601f62faa. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2072a53bc323336b56688a9d1a05f43ce8b8c0b0cc9d8c1a0038fc40c8ef97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADT1831136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744177a30bb7a4a8d05e7307b21c1d85f62354d226047ef8f45a51ce356c4dc8. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-21T22:56:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEF1912904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514f5a6507893c858b19f4b2f36dd24174ec313c9620fbc55ff8a68411be043a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f91f3678b6fdb36f6d4ac5d76f881d95d5e44faa58fde18dfef187314332c5b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4218aba3b2b497a889844d9e601b69731b00521e03dd33f7959342552b038f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1162bda76c6bc2b7a978d378bcd45d967c72af45a9ea40e0dc36c107b4cabed1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090d676c220a0015b7b8526457945668761dff9986bee8e42e2a47b91c3d9519. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c4132916b83a5ab5a560a0242bf509907fa026872f39313eca4f81ad7e7ed7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3454c803aa6148df91e4155bbb6a5e06cf72509c61c855603e7338f87132b3e. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6adc6b5b31e1adbc9a032cc034fa319cc4eb4bc0da216ab06a77cf3503bbc9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcf6fae0c7980e625a7f6a3ad5cf8554b59d6b8711bfd39758ed34cf518a086. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e9514da4fef8310289e7b616692806ecd8f8e8ce2ac8e1bd2bc6e4c70d633c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf42049dca44265e0bf6e042cec220d74fb9d85013c8d76d2e6d604936fb18. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ba87c75a4be89e35ac6279966d24a019f2c01935f36703b82ac1cffc4c7d4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d42777b6a47dba2661b8adfff647b2d0b50be6061c74474f770381a26bd481. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEM1939619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27fa8ce8efa757ddfc66a07862fe1996758965ce6db416e5a93049ad9e03228. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2101032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c96e8b8fb2d6d9a487a1c962b2d03b78c6f1b6c7b08cf55de4192882e313ac. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2101034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaea5257310a385bca5a3ce9aca0d5d7cf7d63c75c0ed20004fdc9ed8adc65e1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2101036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03cc6ecc4e25674cfa9476b2270d1e5a274572b529a09722726f03d730c94dd. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2101038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa6ab69085e2f8886450988471206fd7e6fe68a350658740e328b30cd5216b4. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGO2207219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf056cd1533a28fa8bc61a2332c8e237dc9e660d5004f61421fd2ebf9b39b61. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZQMB2106580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9c9724fc0145f5f44db90a4b0b324fab2f4ab168e4ed564424d8d8193a0e3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92417398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65142e4d72ccea2fb60970c3278df6cad1d784a8624d02d8c2546e6d500e153c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ92417400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4192bd4fa567a53117f2110d2f15f5ccc462a75eaeeeb692542d07cab28dca36. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72419132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f43cf77bd982d388a6bcf1d11591035de6f0d347ed3d291e58d27b6a1711650. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMDA72489435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a818bd4fe00b99106818cba11f88da898ca43ed51f80ba018ecd3377ebb929a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7282563039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1c2027f91b7b0559b79c8ed1331b3d0da6e545035cb5fb88bd032fc14a80b4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2503228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f97d6ff15f03f2b51eafa79ce443921f175e9b41e5fc197c09a2e704a98be27. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME2503219.