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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d8ebd493f5ba4bc18dc5a610cffae92f2b22a41adc269f3cf066b5a4e413b6. 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/759b0309-1ee4-4029-89b8-2ef582c3724a.json and https://artists.proofprofile.net/proofs/artist/759b0309-1ee4-4029-89b8-2ef582c3724a.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94452366f3cf20639ff5b141471b04758f81d7ad7457913ef8a2307f153608ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W0500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedad951b6e88383c8f749606e37477fd3e85e0c0ad9e952815ced7531df71ec. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US66W0500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a4983ce19cb9ac2d435229151c0dac867f9c901eae2ef099082db18b71ff75. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W0500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cd54ac059cc03b5b70b2ed1f8d591263e56254d599b405bd2b8ab90810f8bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W0500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e552f171df583f9e630574a25023c6ce4aa8f4f0ba9c3ea2333e9d2c053b7cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US66W0500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dc7f55018598f6d2ab05ca280ee305326f4edecf0fabdcfd2206d2676d81d8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US66W0500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f38602fcbba6685921433dcd611b854afb3f2a5e94b72f43a0342035d0d363. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US66W0500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbe6168222c40263f7dc071b0044b299193c427033d22d5f74703be19d31528. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US66W0500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149d9b14599c184dc3fe2e81a9acbde16eff381ee9eeabdf741e835332edeccd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W0500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cb71cb3039a3691af62a0de611eec45261c5fdf4baac0faac42a0203ab0a0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W0500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a4fe1f0c8176874af3cb45ce613b001a7fcb28fbb0d4f4e99c2afb7ef4821f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US66W0500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0768366ac21c1f0857283b8dab246f0a2c3903fdf0cdca7c4b2a35ab45aae. 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/US66W0500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac3fdfc94f44de216187d985243764610a4b2c4701c91921982fe2a010634bc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US66W0500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82726a5fda96350e2d1206f3f43ea7e06bfebd6e08425ea869093717d5e87b17. 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/US66W0500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c834460e5f0a301925868bdedc53292092f361332ea34417313e38e98e52a71. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US66W0500029.
La City (feat. Hernàn del Riego) - Single
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a71c4e638d66ec0999edc34890aabeed122fbbfd30d9a9a7724388f822d2f1d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARF470900195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5539530a32a62f37f8e2568a242c4ac13ca9934a6610eb87b56636fc992a7f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US66W1001831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb4147707e86a0eeeebf7ad595b9561d56aa81d843acb4499ae6b38b6d47b5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MX1721300425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404a2dd169c7dae02ea19803acf15a30362c21ef00fe895b8f8a573f0576e132. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF060800273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0576967a04c94443b671b423c82837d788740b2631c3b300b3e142e788eaec. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W1001829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385675567b290fb9b06c2db2aad31a4d04b6dfaef74c0c5c8bb2e6b10c4ec066. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US66W1001833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0768366ac21c1f0857283b8dab246f0a2c3903fdf0cdca7c4b2a35ab45aae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US66W0500026.