César Vega may refer to: César Vega (agronomist) (born 1962), Uruguayan agronomist and politician César Vega (footballer) (born 1959), Uruguayan football defender and coach César Valverde Vega (1928–
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 0x66076a37a26ec243ae988eb402a55b6c02e8d641aad22eb1d3161611f5c9992b. 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/cde259e4-d4d9-437b-8c05-641c318b0118.json and https://artists.proofprofile.net/proofs/artist/cde259e4-d4d9-437b-8c05-641c318b0118.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 0xb534da97220948c0e3c07ea725cd6d0c2a459329995836028cab4dee187db0ab. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMBZ92251512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371db1c7526ff4f3c042e4d2db0bc52b3efe5e4f735f6e521869a7e6566d0ef8. 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/QMBZ92251484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5385d9165a4f92efe9c01b5f29364cb3d895d5eead8950b45ac702023a8e34ff. 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/QMBZ92251475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73507e687f4205a85f995c5a454c51588f2bcd24050ac70e34f537f4fb9ab6cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMBZ92251483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3abd054879718e070daceafd40fce2397efb884b2094d3054b42c68905bec8. 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/QMBZ92251486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f91d5109f1ed7667678d1ad83974ccef761281b7fc04d5641799b41bf22881e. 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/QMBZ92251513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2aa672d7bea4a0c6268d435fa543236c919e40142e88cb72958d1b7b20d434. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QMPKX1754040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67be8dc94978b1b53f3c3571ed66fa20d44c8d98b93ddafe89ec74d307d4216. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMPKX1754046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a46d4f69746dc2bf31e2e7faa9ca6ac972f108be91ccc2cdf7f5936900881c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMPKX1754045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d7f7ec7c3095b1187a856c3f67f869b122252083c4f63003ae66c031b08ace. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QMBZ92248053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b95ec364d1647cd89dfe52a767ba78708c8ef9b978477fdc2f394c1dcbbbca3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZNJV2172633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf66819518fecfc8ccea73f2f956df68cfb2d766626b5f5e272a3c4f1f18175. 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/QZNJV2135646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343f8988bff396dc8aa7ebcb14468244db264bffc62b5e2db8c7906bc4f0157d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTPX2521781.
Sé Que Me Engañaste un Día (Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a6dbb83599f726260d80e5977d47a22242752a4dea4986b521c1300128599. 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/QZHNA2326543.
ZAPEROKO La Resistencia Salsera del Callao
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29732efe5c80165985fa70315cb4d097967874cbf425a09fe04a6774c49b55ef. 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/QZHZ52062532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a6c9bbc5d8cf0ce229e98292d1e67b846149719e8182c3cab9884b363b3d37. 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/QZHZ52016094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb8a582007baa165827b964060800beeb40fbf6b51de8670d7c4f471c4bd0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZMZ92191903.
Homenaje a los Destellos, Antologia a la Cumbia Peruana Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358baf573bd30b2ece8e6750399e5c74a668f48523a3d78dfbf151c8345043c6. 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/QZMZ92129637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f626fc132c0d0c7bb5a414b0f9b30eea9f00382f70304289e5cb35f9312ca79. 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/PESME1900088.