Mauro Ramos de Oliveira (30 August 1930 – 18 September 2002), known as Mauro Ramos or simply Mauro, was a Brazilian professional association footballer. He played as a central defender for São Paulo F
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 0x57d8f73d672d1d743a8cbaa5fef54168d06e5c37b710dd8d4ac5bb50455e4c1e. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9be58616-0f84-4768-9803-ea1b4fc3e94d.json and https://artists.proofprofile.net/proofs/artist/9be58616-0f84-4768-9803-ea1b4fc3e94d.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 0xb0dd300851ab9532efbc68ab8233a83a2a76ad83d1d948ef320a69797d074451. 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/AR8BL2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac43859d33cf3915f64bbc50cca8264c828ff45b0b707fd32597df4b15c6910. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AR8BL2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f1778f3bd560cf872017ebd3c6b722bd193586861b9755520cb11d3aa67664. 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/AR8BL2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ffdae3ba8929bdc8772da0c69ddb91f44e7fde15b410d2f701d146fdca11fe. 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/AR8BL2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453336bd740db91352a16e28613f7a74a7782a0dfdb2e5cdccf4c9c98ad1bd8c. 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/AR8BL2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7b11c5bebacd8d7d0c1de7f999c4067ab56d178e27665f0d9ebdb6272bf3a2. 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/AR8BL2400025.
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 0xa58b9944db1db14f09a8da6b58e95fa40e36b08eb9a5c3a3cab326cf10989395. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/AR8BL2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ffebe17c18b73a7d7b1b8d37a9f330577f75bfe1e33b38caf3445afa035f47. 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/AR8BL2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fd4d3a89ecdd118da37722a81438117558fec80a0eb70d77c9fa23aa3bbad7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AR8BL2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace96a541bc24f98298e44908b072f228a528c61a9f3cab9ec17a3b68396bb36. 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/AR8BL2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440ed41605b19ff91799f52b63f097584c050f75dc4b83e604cb814ec250014d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/AR8BL2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6f303322a0977dd1880ff8360022d0a0492549f84722b52de841c32d9091c2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/AR8BL2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a877dae455855301b1a7d4e65364c12edaa041ac033d2b387dc49d6ead3d50. 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/ARC572001950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3abeef2d1c0e6132a1c63cc61a8b86e3b56acba2248faeff4e0ae60c049c6bb. 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/ARC572001954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2f09c3177795cc0a2c747a60c623903a5e4aa874acd0da99a1e236b1a8c05d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ARC572001948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dd0268fa33162a56019518914b9e6c96e931b0e290637f93f298b67b56ceb2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARC571802163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1f1c607b354dda0c71dad942df78f09d4e92d95ac8e71ae951ff9d4748e66b. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QM4TX1736924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35466bc15ab4b40d1816dda44d65d92ffe2b2bc89564ac8ab58a6044ed0a76c1. 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/QM4TX1736925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff4bffc346c6772be0dd7d7dfa4346326c1c79fdf40ebb5ca6dd5267f9598a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM4TX1736928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac552cc0d5b631a95245bcf689296e42943a60c8bd1ffbae326fe5356c3bdd9f. 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/QM4TX1736929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7424fa17ca36320e379008ded33163fb46696387faa082941b2642207b2acb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:48:17Z), 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/QM4TX1736933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcbe7e67b4aad28456caefeac21a2683f289fa863454b70391da19e670cb75e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM4TX1736930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e28df1f5c6c42000f774bf9cab4ec39a4e86573444e0ceb92ae1c46e348bfc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QM4TX1736931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761d324567d0b7b52996d0dc24aeb3a370131d874086ddc7215048bc9ad97a7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TX1736926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cd9cc2bbae2f43f65377816b90d31f6ce7176ae825e3e0e87dd3eabd4cff4f. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QM4TX1736927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6153b7b9e246ba9d239a32cde545f199e3e511b0574f833064c0cc5a6323f1c8. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QM4TX1736932.