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 0xe9a12e8e8f3b6af25675febee0b8ab243a4cc636cf0237c0b8e3797272a8279b. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a40b3cc9-5e4f-4304-9e90-56779ce7587a.json and https://artists.proofprofile.net/proofs/artist/a40b3cc9-5e4f-4304-9e90-56779ce7587a.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 0x41c2ae8db2ba64e1ae53f176914d81e16d4c63fdbf8237610f9dd21b95497e0e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:03Z), 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/QZMER2306049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c0f51925b1ba6dd85d64ecdc3abb8fb61922de78f1d2546b1728fbb456644c. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:11Z), 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/QZMER2306050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9210851a309db81fdec5d8e7e0231e8433ba778152ad174184cccb5ae40169e4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZMER2306055.
Lenguaje Insano - ODC y Unión Fatal (Beat Gordo Jazz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d400fefd0b140ba463d982c816fb60afd9bb15c77d0daeb6be6d4f7731a2b4f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB92427523.
LOS HIJOS DE LA KALLE (DE PARTE DEL CHEKO) DEDICATORIA