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 0xbed739fe6350756badf7ba4ac417cf3f532757a2bf83fa62ae54f4d945bef40d. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b76c7723-bf51-48cb-8fd0-693218dc92ed.json and https://artists.proofprofile.net/proofs/artist/b76c7723-bf51-48cb-8fd0-693218dc92ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cartão Postal (Mestre Gato) / Pomba Avuô / Licuri Quebrar Dendê
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 0xcec0b287930c19fce60d5c8bdd9279a1cdca3cf1f03e0ae04e5243577b0783d6. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRTRB2400617.
O Mundo de Deus É Grande / Besouro Mangangá / Baraúna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b10b50cddbf440cf791407d4da24f42b4ae3a839c937cddc9c436ab9a852db3. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/BRTRB2400618.
Eu Não Sei o Que Fazer / Três Mestres / Baraúna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417cadd3d8b3abc1a4828ac2c1c1100b6ea5e23e7f56d55f7dc9937aadd223a0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BRTRB2400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb4c6545172f70e289d11a9122bb3da2826a8286dbae41d08258267c2958401. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:26:06Z), 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/BRTRB2400620.
O Discípulo e a Arte / Bentevi Botou / Licurí Quebrar Dendê / Paraguá / Dá no Nêgo / Pega Esse Gunga / Esse Gunga É Meu / no Estado da Bahia / Zum Zum Zum / Abalou Capoeira Abalou
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c84acdfe30d588d36c16a01fd79fed96cfc03c78ec349f43ad643e8aba68f4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRTRB2400622.