Vargas may refer to: People Vargas (surname), including a list of people with this surname Getúlio Vargas, 14th and 17th President of Brazil Getúlio Vargas, Rio Grande do Sul, a Brazilian municipali
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 0x9e445c28e09b3eedebeb766d96d13b4314b4be040866a7890b35ef87c25a042a. 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/6bb15b60-e858-448e-a4cc-f92085e682d1.json and https://artists.proofprofile.net/proofs/artist/6bb15b60-e858-448e-a4cc-f92085e682d1.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 0xcb3647e2fcf91774c50b31041ecad11d1b5834ff7199088a14178fe6a3519547. 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/QZFZ52153093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cad7c3c1af94ef0dbf559aa7fe2810e7eb28cb14b9b23bffb9ebdffc5b500a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6L2189437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71dafcf1428cd039bd67537f342651df20bd6215701fcfeb89a78fcb6a68634. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN92145774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fde269302a26a596bb8f91044502274bc75117cfec475235b7b0a06c06882a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZK6L2189438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf4beb386f7868f7c81750d452c2de11b03c3d179355d1cd5f38048455225df. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZK6L2189439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf171ad77120ac9adbdfea1830dc8ff8851e7528778b8f158ae6be7a87d8e89f3. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZNWQ2211177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f6674b6f890eea33a9627d320de81e62edce4acf7c635b3f99f6fa824ee612. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWQ2211180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9458ba850d8b1f13bc9338a9a287e2421c70da6383e4bc01acc69db92c934ae. 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/QZNWQ2211181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fe638aecb1fd8d35fc6885e944d91d81047f46e09a64ae2079cb0dfe1ed80b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWQ2211182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacce46ac2a0718b1776fab65c023b5f06fd53704de63c86c7a9d45653acef6f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWQ2211186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4d7ad0fd3cdeff6e5979d23e07597cd4bc5c78ba4233204547d45a4fe4a86a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZDA52326140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606cfbd3d21f699db99df6a7b13f36c274737ec7f1fa7414b47b350e9162d58a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZMEP2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b2a9e57729b7ad96667971adbc34cc3ebd5b690ec357168bb5eb131d6eaf47. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZPLS2383171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48721b4e6fb0d13be95ac440b174f99a81c10a2e487ea9350e27f0264efcc12b. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZPLS2383172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121240fd1c1ff0611a483b6b5a1c16dbc0e38134da2b2fe379f5e8239239e79b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPLS2383173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78565f305b2ed1f8cc39cf05341a34f6b173f3d8e5f6250308d45826404bcc98. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWY2343133.