Mariano Díaz Mejía (Spanish pronunciation: [maˈɾjano ˈði.aθ meˈxi.a]; born 1 August 1993), better known as Mariano, is a professional footballer who plays as a forward for club Deportivo Alavés. Born
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83a72fca4d14bc752c11373b7b80f81546cdc1b1ca8d7d2c4d0fe6ecd606181. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/239b193b-b76d-4169-b5dd-eb85b30b74be.json and https://artists.proofprofile.net/proofs/artist/239b193b-b76d-4169-b5dd-eb85b30b74be.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a833fbff068e3f1bbd4efc4b02cb54ac9546d48724bb2021af77630c3b8124. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA082313814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b0e0133bb16330fe3045de0c5ddec7b047ae58c92cdeae8e06b8342c763fb0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA082313816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b46bab3f9e94e7fd59078fc0f17af8b476a8b3322a450cfe85bc10def5bcb12. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA082313819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db3fa5421fe8f90019f6512f13dbfda6753d0ca6caf76c858a55ec711226dcf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ESA082313820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf960b9f8cdac81130a3b7334ccf7f90faef89d8a27fc943bd75382281bba858. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA082313821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaab7ff33abe4b8f70a3d89878947c5721b8df099c40849a2d0b519f6f8890f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA082313817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b137d0b34c4fb8d3aaec9fc54c4dab0b9286ccc6be9ba2c138b227165f0378. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA082313823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab237220ee598fae6875928b774924a1284671d5b917e56c9a359af8b28b950. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA082313824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf7eb7d91679cd68954cd17df0698793411e578fe7d9860cdd01384284c3947. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ESA082313818.
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 0x70ea0307a5867c42a91d28f00700b82194fedbc8ac837eb69284e3378b5d47c2. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/ESA082313822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff13a7e76577fa90d092fca5b6b5e159ac0ffd03c6361d4c509080c7a546769. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKXN22349864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff923391fdb64280097118322efc3f3e5881cd10fcd19e55d801fff2809ff5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22349875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1349829ccc11e53d82f40e2d52f8c18a0adc41b2a2f99b4fc73dac1a5359ecf7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22349865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11a2e62bfb9f4f4ab82017c8de059f3855a67eecfc7933980a2284ec914bf22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22349867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e80f38aedb8f9c9dd1bfe957d7713a0c05dbc1c99d0ecd0c0268fadca841d7a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22349873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab44dd0ecf0f2205bcff6670da93e8e98ba6254743e5aece96879486d116f0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/UKXN22349863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a41ed5f09f761b92a402661e05e739f3cfd15596263bb2c5dce4d7a07831765. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UKXN22349866.