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 0x31a15fdf13e5086e603ef5a51a99df119b2bcf0ebd2a8a5ccd14bc03044c99df. 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/184c091f-a50c-4697-a2b5-e01250bbd21b.json and https://artists.proofprofile.net/proofs/artist/184c091f-a50c-4697-a2b5-e01250bbd21b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Raposa / Selado Com Um Beijo (Compacto)
Não Brinque Com o Amor / É Hora de Cantarantar (E Ora di Cantare)
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 0x050f05782394b10734d92d4c7cd7d6564f816f983d9095470731a1fc0756d205. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/BRSME7100126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191e47ba16c1aa6ac8da9e11e3201b4569410c53f0bb88b7e4fd35ef487408fc. Chain 2 (Bitcoin): anchored in block 957728 (2026-07-12T16:20:40Z), 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/BRSME7100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67bf9a6f0706bd8a9ceb794ac20dabe8d5171ee6110ed60a6f0166b165b80e70. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRSME7100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082e7c5dcc452d68cbdeeb705a2ea2dadcb8dbd4c03c55a7c281bbae7c1fb79a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/BRBMG7400226.
Sansão e Dalila (Samson and Delilah) / Promessas
Trio Ternura e Toni Tornado BR-3 (Ao Vivo 1970)