Elomar, Geraldo Azevedo, Vital Farias, Xangai
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 0x7a11c8541a2c07717706cfe8f55a52b3b1c1b1cdff5e066814ecf6eabdd719e7. 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/e7c7aa56-7c0b-4815-873b-a61e4e0537e8.json and https://artists.proofprofile.net/proofs/artist/e7c7aa56-7c0b-4815-873b-a61e4e0537e8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Abertura (Desafio do Auto da Catingueira/Repente/Novena)
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 0x51b441942ab0293fc3506fc820eeaee87f44f33bb0582e94af53299d05a5748c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c6eb5427536e2548d4dda7800a57414729aeb720bfb5025a09ec79c31eab29. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f80ad979d51b4020f1ac713264b9d3a38d2ba97b7bb7558f84d36a1bea9ad9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d6f7eefddec883f1481310d9fdb21c4b49c5763b3b29cafb5a11f094109d12. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218da132c93f24f1b5641d0afbd07e208e1942df01506a56331465f65821a144. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRKUA8403205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3dc272fdecae2488eba4a272b8902d8782aa54cc8dcbf6f060cbd096c0b8236. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403206.
Suite Correnteza (Barcarola do São Francisco/Talismã/Caravana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76551231a34a0c924124ffd8b870d3c73eae96d0fdfb540c8befbda32ac5b73. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRKUA8403207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6712f75aeb838e807e52bedbf86333adff1686f9c582189559810c7e1c0557e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3489879201c5296bc48d7dea75e5c7d044bc5a259218cc62f9fb4a8147e6db. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRKUA8403209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5467bbb50cb03629bdb73d7a0f56ab994b96ce8f6794185744212ffd0ef24b0a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRKUA8403210.