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 0xf71c1d806a1d72dc58245d5de2bad75688fa0715dd1097a37da82b76e4defaf8. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea260104-8d21-47d2-bb35-25aac06449d0.json and https://artists.proofprofile.net/proofs/artist/ea260104-8d21-47d2-bb35-25aac06449d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Candeia! Manifesto Ao Povo Em Forma de Arte
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 0x432cc59536765b0eb66d97ed2c16ed932ace51d3a1d75448635c78195f643a7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRRGE1404441.
Renascer de Flechas e de Lobos / Bachianas Brasileiras No. 5
Sambas de Enredo Carnaval 2018 - Série A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2948d15acd65156215bb0ec8bd1aa13895ced1ea9c5e90649853a2e0d1037d. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/BRRGE1707639.
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
Sambas de Enredo Carnaval 2019 - Série A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9ab6bb9c994431d82d574c2086a2b88dfc0ed400b4b6877307214b00a77b1a. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BRRGE1812610.
Sambas de Enredo Carnaval 2017 - Série A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08a5a055b8c8e75b4827709d256444da24cbca62df7632790cbf1ca043c44e7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/BRRGE1606279.
Sambas de Enredo Carnaval 2020 - Série A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e00a7980cc04aad3bfd5df0c7c4ed8ed8233a0aede31f8c17a86a45f3d76e20. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BRRGE1911291.
Ibejís - Nas Brincadeiras de Crianças: Os Orixás Que Viraram Santos No Brasil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9037d6d4dbead8d3ff8f8c596fa08e7ff4d15bd67c694f8835f0a043a527767f. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BRRGE1506669.