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 0x773ff695b6f304dbf7714ea7993b5fb5189ec3d285cdff9913ece649a4a7d024. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40d66712-44da-471d-b113-b99f086a79e6.json and https://artists.proofprofile.net/proofs/artist/40d66712-44da-471d-b113-b99f086a79e6.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 0xb022e55184100657c23f41be08dd52c4f0074bba873d5223a86029d1bd70f891. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/QZDQH2376533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c031340f63fae835e8dcdbb5194da4f89bff8b1a81455ebd3dab11d7dd49aa2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDQH2376534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf820fd4ff580bc2b8ae3070bf8543af7bf4b2a627f57fd02c9c3400ce94e54c7. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZDQH2376535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648033c4c95e0d6a5543c3b3afeb8c57872f8f43e1a06071d5570dc474569b6b. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZDQH2376536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3300a832bc183870273fff7c466d367750bea34a188fa9ffad5c2dcf2437413. 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/QZDQH2376537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36b6b7ba941e14ed070d12259c83b3a19ba1cb22f30006f9e8258d5b2113b62. 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/QZDQH2376538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e2a5ceea5f70e5522cafa08f3e5360932a32ff5c239c08fa5f8870cb4dc50. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDQH2376539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25134947a23c77f000acb7d61354accd4bdf76ef1349240657bb4af990a70a3f. 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/QZDQH2376540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9ee437a52e687a0ebc871d2ac7be5143d4570e71f0861cc995258b3057cb99. 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/QZDQH2376541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d99fdac9d0671ee70308e4d0a9e0fe788aa963ccdc187a7c2431c940bfd8b3. 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/QZDQH2376542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348cd21e8791ca3eb420bb66296031e8df988f6fa45bf44c288157d470c73977. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZDQH2376543.
Popurri de Movidas 3: (Y ME BESA / EL CHICLE LA NENA / EVA MARIA LA CULEBRA / CHICA DEL BIQUINI AZUL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1847e595bce7d8f5a83a10222867b1ecbf7f143e36eab14dc7d628dd16afa4ff. 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/QZDQH2428875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44f567e5ffbf788d3365e652057455890905bbc76893c1f6ebc7670d1e8c385. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZDQH2423583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb4a713f23b719890b90b043095217575ab585f19c603796ef6472c3c1092ba. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDQH2412309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc6a259a73004bf0b69c1595f94728a3144b871e82a8e5ca0131a19ba6f4699. 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/QZDQH2397161.
Popurri Amor Ranchero : Amor Ranchero/ Lo Que Quieras Quiero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c8bc8c6520bae3a239c758d2149a013d1ec06b3bfea4995f405a83aaf5716d. 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/QZDQH2368252.
Popurrí De Los Viejitos : Son De El Trenecito /Son El Saludo Del Amigo /Son De La Entrada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba203d78d84b25146ac9262210204a63b7284787ac642961bd14e546db690369. 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/QZDQH2368248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8950d0efc9def0c385eb8f03060cff0fde7b78677be14c005a144ab82ed37dbb. 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/QZDQH2367736.
Popurri De Chicana: Son Del Trenecito / Son el Saludo del Amigo / Son de la Entrada (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc20891c1e1ab0db58de0d7f2ea5521847cae04cea9c8dc77c9f1be65ee0097b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDQH2367339.
Popurri De Movidas: NO BAILES DE CABALLITO /MAMBO LUPITA / EL BOTECITO / FIESTA CALIENTE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacd4ad31b7072ab668334c641c0ab5c708f80e6c2edeefd10464a59b9d5506d. 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/QZDQH2367272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe65285629de12b2a80459b152ace2727ccb88fc8f028de478ba082abe35e4f. 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/QZDQH2365414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f293aca2ed7f025e1d7bdc5f09c76974a1330ace8c08ca6aea54885d9fa7df. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZDQH2365413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2a48d1e68b014ebe897bd3c0a6f4c1f8ebffb707a8597f35fb62b992378b65. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDQH2365409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14847e9b3d46f69f58a294b0b3f5a68eb7a6de84fe1cb7da46641becc0f9804. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZDQH2365411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a985b8709b5a13086ae0441a41d726ec7878b7001f6ca5d8e5dc50fc4519b83. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ESA011664316.
20 Mas Buscadas de Tierra Caliente, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369a27f06de454467c82a6eaa2772f7d310e6c93472914c65fa0cb2877c00b8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDQH2362072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fd917508eae0ccc2ef6c044902d36ca7f7987c6b73e40d56974c79b1266c7e. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZDQH2362083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95f930af849e74d05dd9bf4c426a214132f43d607edcb4f61d9e082fcb8812b. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZDQH2362089.