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 0x7af0a98027fc7f0cc03b383339e21251b1d76c6ace178b98d7414621c7caf6c9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/78bdddad-62dd-4e69-a150-62b8410d048f.json and https://artists.proofprofile.net/proofs/artist/78bdddad-62dd-4e69-a150-62b8410d048f.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 0x59b215b2dc187b83210d6e7b07d6e531522e2eefc8b69dff8676161aa4a85eea. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6N21770394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf292106806185b1d2065c10eaeab011747fa0c1cb2c62eeb64ffe7b3230558c. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QM6N21770395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c0342c9dc2db37c17c3d6df3132449f77bdda22b5351faff8e9ebe995df618. 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/QM6N21770396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118a7beacd8bd36365278da67eb7013ac6fed2b9105b25544b260df15c624f43. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21770397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3df9a65d15e987021266a4fa00c1cc7accabefe73ed9fb0fa63120ce4dfe48. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21770398.
Nervios de Acero Aka el Zero Cinco - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888ddd151dc7302add09372173c1029afb3b269e2f2895fb37913ed846375352. 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/QM6N21770399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb24a68cfe298776f5e667d7484e8f91798e390c37281e4afb24a03a8743c0e3. 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/QM6N21770400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e05c0aee714a4ac9a9c5acea49ff3041175b362bdf5d2c687089c6906d61c4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21770401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c24e90d6dda1b0e0cf1b6c94312ddddf26a0524dc919ae15ba0429f357bff00. 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/QM6N21770402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecc004e516ba6cc744c29d88fb62e404d4c315c674585de577812a7aa4fe729. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM6N21770403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c844cb6a4c591db3c8ede44324e822b1b7de6f6ca63e99c4c675a91f7949e21. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21770404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b95ac32484a0ef6b314b609eb917a8d917fb9fd778f71d4326d177c8e1349a0. 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/QM6N21770405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968a35bc6d9a20d007104944364df483f65a0733e85a0da9e8872430a09a8c8. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21770406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740f48ad380b1077b1ff14f7110e029c44914394cdb82e9b901d5ba6cf5d9ac6. 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/QM6N21770407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a033b956e4ac4ca71e715691c9dbce852d47f2c9f4c14b407afe9c43ecea6b. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/QM6N21770408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde99d418c1a82838f503cdfa0665af68e2958404b66ba01f2ae2dbd28ce9adf8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QM6N21770409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd87d9bf4fbf2a4617193442020d591ff25449ebed9ca3f131cc13ea1fadf6c. 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/QM6MZ1756994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb575f3cb601a3a5f65085b8ef03a8f561da917b7d320e2cf21c14a43d4041f02. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QM6MZ1756995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45000784945fa8cce91e52dfc15d001eefd2c60687361235c0c4ce01c452171d. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/QM6MZ1756996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b833b84a342f77dffc8a14990856a193241801f8e8f2896aa3a7baa2584ad8. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QM6MZ1756997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0118a6fcecd0b43befa841aaaaa0a3988bdaebc0d54cc04c466dab4fdcc597b6. 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/QM6MZ1756998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8baa78a6f9f8186b4c050c8e9f7436130b22a4fe030d84a2fb688554fb8376b1. 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/QM6MZ1756999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9499676d457f066a58c0083d86803b8d689693856c190ae1c6ba9a2288e5b6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1757000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9487e0282a71fbd0f5d733d51f32f42a3fd4fc4424969cc2206711a8ca6100. 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/QM6MZ1757001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1706aa2a3d3a11c453a4b78f07442f5243f4eb53958a758c5344e63f4bf2a1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM6MZ1757003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b29b7d82325f051651c475a4d06eeb7dba4707c777213866212dd6f4843333. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QM6MZ1757004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96630a727acccc7ab55714098d4fb8d45b3ac3391b0f0cec0c75b373f0a795f5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1757005.
Los Mejores Corridos de las Calles, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615178b7b3614c355ed27186022c9e0d2c1a25bf7bd75107fbb5df8dc19b03f3. 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/QM6N21747059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba205cf321adda8cf5b94af80e996e94d33ba37282aad2cdce8f179f999535e0. 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/QM6N21747060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ebd3517fa861c947ceedf8b45f62d1103aea21728cd3e5f32406fa28d88ee4. 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/QM6N21747061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4e8fc03a5a779f9add581d5128dd99274e068dd4702df5de9048f5da00efc1. 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/QM6N21747062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c1a0df57de74cb9910dd84b01ac96521333a53e55deeadc936a048afba358a7. 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/QM6N21747063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61dd64399a966fb15be471d3f3f01407fb1b2b9dd378b4445b6f08e63991370. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QM6N21747065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f9cf9c52cb10a163cce89c96aa96263643eeda11120444e89bef609d178708. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM6N21747066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efc2e00be27c11ccb072abc077c49b7145dd7296be63915f0fea5ccf5429e7b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6N21747074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fff0fb1a42a49d7aed827d2ad559d74a35fcdee95590263c4c6144a34011026. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/QM6N21747076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61b06e5e6494a14faec68191eb0d191535706c7c680a42e978bf3f63bbfa0db. 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/QM6N21747078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3663e953b590530bafb74547d9ffe0a00ea3b506e8bc6c1453ac2d7babd754. 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/QM6N21747079.