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 0x8460619743b7c93b9ef45d2476750c1d90aa064c513af700250a2ba8529e6e26. 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/96822caf-3589-4136-85ec-92b6c25ec94b.json and https://artists.proofprofile.net/proofs/artist/96822caf-3589-4136-85ec-92b6c25ec94b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
La Operativa (op Sierra Fox) (Cumbia Belica)
Gatilleros (Op. Sierra Fox) (Cumbia Belica)
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 0x340bf8340a081883d013ee9e21b5193d2ac7cf38a10863acb58af137ac91d390. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP2123172 — a six-check JSON result.
La Cumbia Del 35 (Cumbia Bélica) (Op. sierra Fox)
En El Refuego (Cumbia Belica) (Op Sierra Fox)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9b36df73bd07aab31a795219450c89af308f111ed85401d5d5d0aa341a06c2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP2134688 — a six-check JSON result.
La Operativa V2 (Op Sierra Fox) [Cumbia Belica]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b2577aa50d098c04648dce371c3175da009fea016a65da365da6f423af5896. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2487022 — a six-check JSON result.
Somos La Toriza (Cumbia Belica) [Op Toros]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe44dc889364618f9fb6d0e70a727eee61bc33bb8b2114e2e1eca269c6ca87. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLS2493702 — a six-check JSON result.
De Reyno Pa Sierra (Cumbia Belica) [Op Metros]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b20bae5ddecfe2a3425b874ee551490549c66f0cd455753988cdf32e258fc4. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2496604 — a six-check JSON result.
Sin Miedo (Cumbia Belica) [Op. Sierra Fox]
Con Mi Pinta De Malandro (Cumbia Belica)
La Chucky V1 (Op. Sierra Fox) [Cumbia Belica]
El Chino Infierno (Cumbia Belica) [Op Metros Grupo de Choque]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed099ac1be743d9e71646ac986e5cf5568730c214bc696d033d34222c937bb2. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFP2407116 — a six-check JSON result.
Toro 16 (Cumbia Belica) [Operativa Toros]
Al PendientaZo (Cumbia Belica) [Op. Sierra Fox]
El Elemento (Cumbia Belica) [Op Sierra Fox]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236f391f31aa34ae8e4f9fdd5070561b606b0ffa6dadb5f5d48e63db37197d79. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2450207 — a six-check JSON result.
Parapetados (Cumbia Belica) [Op Sierra Fox]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e798bc5888ac6eff76e0e06d3a97a7f162f9af06c9f12c145dfb960487b95f6. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22563986 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce24fbb7cb082c8e6cb537face513d1576b07518acb3ab91e263c91dab5db3f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP2159485 — a six-check JSON result.
La Operativa V3 (Op Sierra Fox) [Cumbia Belica]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3488a73aea4889fe1bac5dad72e738bc98e992126cd42852ad99a5b85cd6f74f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA52541111 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f789c1fa8367580fd98dafd3f4766b2244c24df1a098d9ead98531e92d3b89. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN42560579 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462834f990e4a026bba3e2766dfef9119bd31858fa3dcf7dd229ad1d34f4d2bd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP2161855 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0e21f8f1d61b19e95822ed9ad2fcaf4578e0316f50cb74925bfe736987016e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2553866 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2cbabc859df40ca4f265e95cfae98a0e52f378b71a13efc4b6b8f94bf9f01f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6F2513435 — a six-check JSON result.
Chaleco Y Papas (Op Sierra Fox) [Cumbia Belica] [Lil Fanxy Remix]
Fierroz Y Balaz (Op Sierra Fox) [Cumbia Belica]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921122c931265fa2c9961d73cf7b5ead173bb3b5679582b7cd1b93489a68b6a8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAW2537667 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c23d2a149dbaf51bee648878561967164c10a139aabd1110430e1c6a06e038b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB82592501 — a six-check JSON result.
Llego La Maña (Cumbia Belica) (Op Sierra Fox)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7956d3f8e69fbff22d5b5ca2ad02e8bcce1ebc9cb2aee653abb8d16589ac729. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB92558887 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e3751f2630278511523d86c6ddc7b4a2a78c145cfc2bbbaf04c6026921bf72. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFT2581449 — a six-check JSON result.
Artesanales (Belicumbia) [InclanMX & Jay Yo Remix]
Cuidando El Sector (Cumbia Belica) [Edel Rangel Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c51c69a2dfa75d3d3408ea8254c6052890eb75c4113fbe00709092caa1b1b8. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ7R2526108 — a six-check JSON result.
El Flaco De Nueva York (Lil Fanxy Remix)
El Flaco De Nueva York - Lil Fanxy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f899dadcb15d674ecc198eb25567dfc792ad60040d9c2ede50c1323e25a115e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDFP2145748 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5841d98e374d3cead18e6b8a41091a770cf1f9b8e7b1a14b57353bb80fc640. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F52586816 — a six-check JSON result.
Ese Mero (Cumbia Belica) [Lil Fanxy Remix]
Ese Mero (Cumbia Belica) - Lil Fanxy Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6c5f19964d9da956c474de6972004d07d0ebc975b49c239bcdc2dfe40df92a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F52558122 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eb89537ef41ffd9f9adafd33942c2bce328f2b6980cc5e6d42e67eb84798c5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F72584134 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372015086a26dc8da1ece7cc2763c9fbd04b4cfdf1d7d66403c6c1b1aa9ec182. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FF2577177 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc1c8f6ecaf60d56c6f77ac559391942a6f70d799303c3a7c4e9884beb4858a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FD2508702 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a483358df09751d7c74cf609b845d0477a6419fce50874275b6fde1431cb1d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3FF2506737 — a six-check JSON result.