Júlio César Ribeiro Vaughan (April 16, 1845 – November 1, 1890) was a Brazilian Naturalist novelist, philologist, journalist and grammarian. He is famous for his controversial romance A Carne and for
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 0x097d838962ba4636062d171b8fea104f32e864b7a9ce8ca1f046c8a4d46cc2f5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d129fbc4-6fec-416d-a055-01537f66ea2b.json and https://artists.proofprofile.net/proofs/artist/d129fbc4-6fec-416d-a055-01537f66ea2b.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 0xc6e177cac3a79b371c6d353e2800650512098c85b5e12e7da8e8d2f06747f591. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BXAPH1700199.
Clássicos da Música Cristã - Harpa e Cantor Cristão - Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118822de12cbf6ebe9d5d724aff4fbc9c48e8d4cd63d5b1d3cee4a66e07aa614. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BXAPH1700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cafd752241be5301e27458fe36feb740dea36c551c1a4b2b870faca0d10045. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BXAPH1700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1424d247ef585ba67c83205dafc328b27753c4cad83bf49cd9ce0d547f83eca. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:06:24Z), 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/BXAPH1700177.
Clássicos da Música Cristã - Harpa e Cantor Cristão - Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd089095ba7e0414a1ca216bad1fdf07f8fd43e684b2123757413fe35beb5edd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:05Z), 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/BXAPH1700182.
Clássicos da Música Cristã - Harpa e Cantor Cristão - Vol. 1