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 0x318ceb59535c8693baff2e426d2b49b05b1232ee5c5af0d0115c78dbf95ddf1b. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d52060b9-08ca-4180-a6df-b6c2619fedd8.json and https://artists.proofprofile.net/proofs/artist/d52060b9-08ca-4180-a6df-b6c2619fedd8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Los Españoles. 25 Aniversario. Orquestas de Galicia
Cumbias los Españoles: La Casa de Fernando / Mi Morenito / Reina Cumbiambera / Grito Vagabundo
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 0x0dbedc6ac44fea3c8cdcc3838a9b3a71907a4f1734bb452ed0c5f063ea4e7275. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:57:04Z), 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/US6R21469094.
Popurrí Merengues: Lady Laura / Como Tu Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe485b7679ea20a536068f918f07d73bc47f928fcb92f979827b1ec9d23168ef6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US6R21469096.
Popurrí Rancheras: Llegaste Tú / Una Pura y Dos Con Sal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71384059629cb4cfc8a2ddb4d0e9bbf5ef59cf5f7f880cf2615cde0dc77a43cc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US6R21469097.
Popurrí Pasodobles: Doce Cascabeles / Mi Jaca / Ni Se Compra Ni Se Vende
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25430cded914baac045cef8cd958b61ef993847a3c0c858e38ee808ac7c44ab. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/US6R21469100.
Cumbias Mix: Tan Bonita para Que / Como Te Cae / Nostalgia Campesina / Una de Dos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1ce5b84ab9f4f178814661c4c393eadc1b153a4beb12f7693e479d1753f79b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US6R21469102.
Mix Cumbias: Me Gusta Todo de Tí / Una Cerveza / Lejos de Tí / Vete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1642c3ca717631ae82579702606bd4ba0f03725d7f32196df367faf24457c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA021601382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874b85a657b67c6cb256f15fcf4174f40dbe0f05a89034300cfc9d9a08ebea45. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ESA021601386.
Medley Rancheras: Después del Rosario / Tu Abandono / Una Noche Como Esta / La Ley del Monte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bfa9124ae6034128979a8c8aaf7d88737d704be3248b3a9a8f485b7f36130b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ESA021801795.