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 0x6fad9ec2b7049648ae7e38a6db68153adece84a7a4f81ba6ffab643df3e6e9f3. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4d700d41-1beb-4a38-acf1-394c4d26ebc8.json and https://artists.proofprofile.net/proofs/artist/4d700d41-1beb-4a38-acf1-394c4d26ebc8.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 0x142236db377db13d51b29c008b10fd91240b8ad58e38bae5fbb61f2366d6c51f. 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/QZK6K2036440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f0891ace346ca44427b741c60ad25c738ada90c41f9ee58336ddaa6b27dfc5. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:49Z), 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/QZK6K2036441.
Hasta la Cima Del Cielo y Nunca Voy a Olvidarte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3da1c4676f90e5addabfdd885ad1e6de73c4a731715e8e624e56da70eae3e9c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6K2036446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44729758d2965aa930ad40ddd02ae34501e1244bd67b1fc9514f0ee22e82725e. 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/QZK6K2036447.
Eres Todo, Todo y Esperanza perdida Fara Fara Time, Vol. 2
Amiga mía / Amigos, Fara Fara Time Vol. 2
El Fuereño & Paulita Gutiérrez Carlos Leal y Su Fara Fara Time, Vol.2
Amigos Tuve una Novia & Tengo a mi Lupe Carlos Leal y Su Fara Fara Time, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6672cd03dd2fe53179700d59c9ef619086af050abf748143d128824f518ee33. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6K2241679.
Somos Iguales & Te Llevaste Carlos Leal y Su Fara Fara Time, Vol. 2
Apartamento Tres y Amnesia Carlos Leal y Su Fara Fara Time Vol.2
Corazón de Cristal & La carta que nunca envié
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9967750c9885fa98cb1769077c1774f3f93bc35edcbbdbb063009df76615b460. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZMEQ2321511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73eec89e9975739fa52fc9fdc824afa875dd23e4c8495848d77c32ad22a13f5. 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/QZDA52535657.