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 0xf8d38b0f2f2d54a2e3ff9b0b66060b1b0a9c4d7d3dd42aedddb24f05a7528881. 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/b5eac1cf-f218-4db1-944a-027b38e7dfe4.json and https://artists.proofprofile.net/proofs/artist/b5eac1cf-f218-4db1-944a-027b38e7dfe4.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 0x3e65d1486d16d0b3f4045c49bf68a153c137782ed41ffca1602987d96e117bbe. 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/QZNW72400621.
Cochazos de Efrain Toledo y sus Calentanos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f8c73f20f68d7e4b50350157a68534bc48e93ea6b8281e05782f802538f1c6. 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/QZZ972408032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f42195351501f53608a64f82a117cad97da66ccfdda0e0025d2789f4e925049. 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/QZXLZ2301965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a5a00411279d8595f00025b400b14f905bef5b49240fcad95e905ee1599bd3. 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/QZXLZ2301966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7821617983e17b82c74d8a1767ee285146bb8240b56fc151b7b608b343c172b1. 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/QZXLZ2301967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c75e57fe593243df0f1e2088e8efb0a0d90f76872de5765093fa478d44e424. 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/QZXLZ2301968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cecc757a4270ca0760e7f7d2844c751b7889cdb59c4d0480f02fc9191ba2a0. 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/QZXLZ2301969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd65228c35417484ae6d01675532d87b0b77edc6525c718453bfa4abd4fe58f6. 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/QZXLZ2301970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb47a8e954e7c36ba01cd15c3b213293ad79103b104d04eb03cecac70d391b1. 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/QZXLZ2301971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e0b1ce73c7a561114147c6b499fb9c1ee8bd4edc55d3d8cbd893365c566d90. 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/QZXLZ2301973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51c437eee1adc198dcc80dd69651a253b6a660b3667cefefb41c7afd0edc383. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:21:07Z), 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/QZXLZ2301974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72de197ab7b26a677e043d8c4b72e13b2d77400c03e9aa427318b2f4a962cf57. 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/QZXLZ2301975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb596bec869b2f672b8e51aca4047608a2180ed9e4c00773b0b6046b52f4d8728. 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/QZXLZ2301976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac0d98425ca00a9e8be49d0bc08fb059b9da605f107b6296c7495b91e5128a3. 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/QZXLZ2301977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b0d47df7783ef93c2747b4a0fa605ccf0ce78d0b8e906220af6acb02f99a0. 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/ESA012129781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d23e5a106684e48c7010ed86aef8f1ad977921ab4c2f4517e473069b3e558. 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/ESA012129786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd7c94332cb0a9a2e6f7bec00c27cd0c3ab18e25ac0edbbe3abc2bd7c11833d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012129808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02244374e4a51e42306e15fdd6c7d1e412135fa0cb599b62357f841ae6588b02. 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/ESA012129810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a78d8b4ba039f361ff89b860f7149685042f09a906e28a8d75be35e9a67d5. 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/ESA012176960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae0222a10d201c7ebd6ea5c25b526de43e158604e317414ec1294751d706f88. 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/ESA011751819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430c224a998510cd1f74fc946c54dd885d4fd7091f141f07946c2a92db686817. 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/ESA011751820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638c87f68fe0f18ca69c8d46234a01ba532a28fabe9bfd4a86872c88dc4be802. 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/ESA011751824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0926877c33f03505e6a18ec08d9b1d67bc6b5931c8820999783d8f7ce9949bb. 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/ESA011751827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb778a2c207617e4dea37284ba89c3677f69687bcc6ff65e8eb8f68ae7d43df3b. 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/ESA011751828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1a0facfe3b39042765262a7060f4e0f93d86c92d76e32fe6b85816437a3803. 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/ESA012317592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68392e6b5bef2a80e1fb40ddcaae4d34667d155f46b4255ef6665287a345b34. 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/ESA012292862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc506cf32d425351bf91f14410edd9dd05dace0e91517116184cb53ac231b7f5. 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/ESA012295458.
El campesino y el Narco (Versión Norteña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efdeb31fc58b1eabcd94ccafc00dd14e5d846b952a973f4fefbbfccd42baada. 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/ESA012236544.
Por Tu Culpa / Voy de Gallo / Al Ver Que Te Vas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ba46455a5a95204189ccb0f0980659b7448ab77c735d45ea774b15db4f1e56. 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/ESA012173639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa637b856874f9b2d23015d5dda999911bef0691b883297d409ba59cfd0916bbf. 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/ESA012197218.