{"copyright_id":"0xd3b958dacb5cf6d6ea5bd606d1f332ec72f23fcd3aa1af3f3beca1f4fbb14dec","name":"La Cuadrilla Norteña","registered_at":"2026-06-12T09:54:47Z","symbol":"NIM0262293","token_address":"0x2dea46d588da568282ced9d68fac12dc21bba0c0","type":"artist","uuid":"cb48658d-8d64-42d2-a40d-c4853212ea6c"}
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 0xd3b958dacb5cf6d6ea5bd606d1f332ec72f23fcd3aa1af3f3beca1f4fbb14dec. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb48658d-8d64-42d2-a40d-c4853212ea6c.json and https://artists.proofprofile.net/proofs/artist/cb48658d-8d64-42d2-a40d-c4853212ea6c.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 0x7a4c499a61fa282ea201c4f7e49de5d7638ec2836a299b8fd78a5a9e28ab34cd. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/QMSAV1103287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234fdff931f86a1405a85149e984c91d36c8b9966fc0d21c8f051e9dc7228a1e. 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/QMSAV1102712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5fea39ad5ea0f81517b0974b6855f8aec8ed9db582ff47c1f94add5d37710a. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QMSAV1103446.
La Vieja / El Carretero / Don Crucito (Wapangos Locos)
Emilio Guerra (Contestación a Laurita Garza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61da7b485aa099afd55020f2d1c7bab6abc583725c9ea65854249b90d07fa79c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P2331516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e67a97e02b072311e9bc7fcc8ad56397d10a852f312b705b5507ce687d63f8d. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USA2P2411881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8497d4b420500848c77b1b2edfe885b82f16dfbb92b9ea58628a0f0f77b8f1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USA2P2411859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2790e9bb608f0c039523159f9a3ed400f4dbedff9bc19be60f207d9f11422c46. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BK4DA2425912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b898e764eb229ad1ae1bdcdd5d58e986dd94494a8c53398aa3852afbca740c. 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/BK4DA2454647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92653a8fc674e9b3ba46b71e7c55fcc43f677e281a33b62bc3d219e2e67cbb6b. 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/QZNWU2588686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7dc2186d61c6da5f598f13a1cc12d5a4d28c7bf769d42e3741988bc5ec8815. 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/USA2P2315585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b30215c76d947c58898a5c479b9837406fab405d195a012bb43dc7d0fdce9b. 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/USA2P2348117.