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 0x2905bfc6c5dfeda84a4edc6234c8cdbdaac15fabc0c25377604e4ace67922216. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f80b1278-c860-465b-899c-360944d8a919.json and https://artists.proofprofile.net/proofs/artist/f80b1278-c860-465b-899c-360944d8a919.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blá Blá Blá Blá Blá Blá Blá (New Punk Rock Psycho Killer)
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 0xbeaa719b1eb7fcd0e0136df30519f0b07534037da6695735b747701250d6e6b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTRB2070005.
Blá Blá Blá Blá Blá Blá Blá (New Funk Dance Psycho Killer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c45edaf8da8ffde39f451154c1fcfef4c1e08ff24f678e44a493d4caf3b2a3f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BRTRB2070006.
Dentro de Uma Lata de 20 com Óleo Queimado Rolando Morro Acima numa Noite de Chuva com Parafina nos Cabelos e Sandálias Havaianas entre os Dentes Cheios de Lama vendo um Arco-Íris de Sal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be1e650060b74fbcfdcbb90eb9340b03eb9912ac670d597da844c902c624572. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/BC69G2400001.
Natural (Fábula da Lagarta que Confabulava)
A carreira do Destino ou A Verdadeira Estória de Como me Afoguei em uma Gota D'Água
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672da4baa78fbf34d59763dd10f3fac88161a89c70bfb92ebaac1b852ecf78fb. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BC69G2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78eec677876f04073742cf240021caa62ffe0bbe6a6eea27bcbfeb2b9ab8c716. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/BC69G2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd86bb9d4b08cb6184577c17175d4fd1d17cbf10cfba6bcf2ff6429796896563. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BC69G2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383ace48faa9ecc83c54e4c48c92ccd6fb4b5be0be56ccedff06b6111b128570. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/BC69G2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ed03469a6f23fb19e33f80e04ffc3afd613ceef222e4329ff4cc3a44647351. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BC69G2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48d6069a727631d51ef062a5eddc066e461db8ef3fa7e526621f6645ef605df. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BC69G2500007.