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 0x885cb45b39f58a11e43daee72e08f751f9a91c893188b5823fa2f3f5f349a43d. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68b422cf-2b06-4f99-adee-9c83172c113e.json and https://artists.proofprofile.net/proofs/artist/68b422cf-2b06-4f99-adee-9c83172c113e.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 0x561c05b9350a3904f0085e09bf37babc2fa094c425b521ad2b3b7bd89918fc73. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:45Z), 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/BRCER2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b92c629dfb810214ad5222620a3e1e8459648888a8f580ddab6ad5372cd5ba. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRCER2100028.
Escudo Protetor: Hinário da Paz - Madrinha Ana Vitória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91fed68cc0a66685af01b18b52d8597a1c5c1d9fbffc78468163ff1914385ef. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:45:54Z), 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/BRCER2100034.
Beija Flor Hinário da Paz Madrinha Ana Vitória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eaae00d90108a5944bbe0be1b5f054280e59d346f834c4b17a8a08d9442d90. 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/BRCER2100035.
Lua Formosa: Hinário da Paz - Madrinha Ana Vitória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0159f968397cb692d7ccf16707453e5c5877b983dee1969298de417b9b76737. 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/BRCER2200002.
Mãe Floresta Hinário da Paz Madrinha Ana Vitória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa400f1f6563da3952d3f472098a2240601753ea3cb30d2f9659353dc018ba. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/BRCER2300015.
Andei Hinario da Paz Madrinha Ana Vitória
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6660b5be8cc26c16bec76e432b1643920151fbc729624c1bbc2e045dd9118c40. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/BRCER2500009.
Sun Pa Nã (Hinário da Paz - Madrinha Ana Vitória)