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 0x0260d3af469c4f5eca31f2144df44e1ff296a0a940d15fb32c5ad5c3f1f55dd2. 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/f282898d-2f08-43b3-a617-1e3c51840cc4.json and https://artists.proofprofile.net/proofs/artist/f282898d-2f08-43b3-a617-1e3c51840cc4.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 0x18a84ae0f74cfc3f6409c90d396fe827964a02d280a6a6ce8d04ad8a2406e296. 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/QZMEM2244090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c5110423398949e253dbd4897b9290106f0dcea28cda7a25de06a9d3603afd. 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/QZMEM2244091.
Cacao Live Show Caliente + Extra Edit (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf67461d1662ed463bb00523739ed199b6d2bc6a13caae813701158f241e62e. 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/QZTB62278467.
Anthony Godfather - Caliente (Official versión)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b7d9d08b6836494bedfaced53b1a65e8ba5fafa52cf02de61a97bc4d4e2af7. 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/QZES82332592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4530f77c655a63dfc25d00e262524144d8e954dd7643f8e23472a27daf501be6. 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/QZNWU2346240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e26ebb5eb791b7b1f1147dbb449bb337623435c91465fbdb58249a26e2af6d. 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/QZFZ22422229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f0bab2a472354bc70a45c7f662eaf7f0fdcd979ad7bffab0937c666598076b. 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/USDA12331943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b182cadc7250274a4813ef61d46a1d97315e893488e76d55620e6f37b61eb88. 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/QZES92419559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819dc4ed6261899879cbeb3e52319f185ab7b3db15a181b0c225e218d06133f5. 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/QZES92419560.
La Blanca y la Rosa [Andres Hernandez (ES) Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821525beaea662aed43d3cf606af4d4a9f6fc78bc7119d9d0c0a9778a2980083. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWQ2478862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7606dddd15ae066fee108eb3e0db055ad5483a93cc0ba1a08b2ef702c205c2. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/CH6542484555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbfa63dd1eb65472a49e79382e89cb4431c7ab15ef5a193cfef690c4167a8f1. 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/QZNWX2532530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cfb67db27c18ec19ce16a59650fce6f41767d6f380a0c18f0d81471d8247c7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2508172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf18e88f339b149eb1b991333ad8954836dbfd90a00b38c088d3c9902238d21a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2505539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0b216e7cf26e01bb4e3bdaa74886207cc6fa9e7bc3e781e41fc413a85dcf5a. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZTAY2508280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04661ef6c557e53c9aef115e8aaaa075531b5da5fe7b749d0ea6c9fb781a551. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAY2508151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553c5630a75a5d956cd403247e51dfdffc4ca2e0d1ffd996acccb1825164f864. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB32529868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b98a8d6dbe8ad7fd2186b18117b428c23f052720c2c5f8860b54a9e6bbe128. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32529828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107c879d32a5af8385b9d7c52beecfd949df85be2c69ae9e73110301c6251914. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTB32529849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3848c71208234028db3811f15fbe6da11db5c71c66d0626f952ee87a7f57b3ae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB32527828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e4d18f8450592c65a1c4a218d75134053f705101b666b2999fb0baa2a94873. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTB62549501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e1bfcf4e6e20f6c60ca36186562693e873e5aafec18c0c6d2af0710b96856f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB92561803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5aeccf46cd28babac864a509a45c638179d3d2a3b518404cc711ed401b27f4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBC2574743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088535ab048a9c9ea056c057fef7a5ac03321f3f2a77cf2b405217761b58d728. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTBC2585476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9453b587363150ad2fb1caeb7582a205c3856f9aa6dc3224d00f3e725650e. 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/DGA062334891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a871e4738cd0cd72fa4969c740b09716f6d48e85668e79e88f1fd6be687d72a. 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/DGA092353605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9453b587363150ad2fb1caeb7582a205c3856f9aa6dc3224d00f3e725650e. 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/DGA062334891.