Nortec Collective was a Mexican musical ensemble formed by various individual one- or two-man production projects. The group came together in Tijuana, Baja California, Mexico. Their genre mixes electr
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 0xc4dfe7b6a448acb472161920a2f344e375b8d5936321120cfe0e9e687ef8775f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bba54d33-1340-4dc0-a16a-41415a18b74a.json and https://artists.proofprofile.net/proofs/artist/bba54d33-1340-4dc0-a16a-41415a18b74a.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 0xf692c1ba6d8d24a85b87d2ff76b30e0b64da93e25c7346fac22203887d140d6b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAAY1126720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034af0b87ceb4a449b910d0718b1185306a24133290e4609f310d42429f76523. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAAY1126788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff91e54a054875f3b568b0013d17e529abd9841334595d3071142ffb4e03e6d9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:34:50Z), 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/TCAAY1126922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0950b776ae79d11506f5f782c0a8c0fb3ce222fb0bc7fed81ce6c164bdbd4d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:16Z), 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/TCAAY1127201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fad1208dd6c8f9235bc8620a34f73f4d339f716e4d5f90f67378c4cb629ee6a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAAY1127221.