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 0x6021ae864a22c4234aae20c4e8f576c53038d61e25d6bbbf5ff737703cc681c5. 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/44e30352-4aa0-447b-a4e3-db74bb85ba22.json and https://artists.proofprofile.net/proofs/artist/44e30352-4aa0-447b-a4e3-db74bb85ba22.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 0x3243ab7ad10533a3133c64964fd36c242badb0f368d31613656bce76ca36cdfc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA012043668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df13f0309a7e7dbb14b3938ba297c3d370ffd26e3f6df036bb02b39fc5e66f4. 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/ESA012055245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a1ceff629a480ff8e318e414c492819b899fe7826f2735a59d183ededf5566. 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/ESA012055233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abd928df73f8a1551816075c67ea61db987329b587693022b379ebd373b13ff. 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/MXD782003070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451e56e8cf5f8cdcae39eac461f1c31cacfacb30ccb8b9c64d3bf0905decd58. 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/ESA012045270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac0bbc3b3f604c40c666ee150f34d6cdb63f1ee4444226a004b3ee471c2f13. 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/MXD782003417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2251d91f0825b6eec8cb35d1fcb0d6530983e04e44debded6725cbb12d210bf8. 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/MXD782003072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b43b614c0b68928c6757a15f31bfb9e71ab69041069adf1e6a8a07399f3a877. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2149206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd253af78575b1bc0b1bd131a634dc6e151ff928c02b660346fc4a9f1df94d49b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2122618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be0fd4e09165c777a9c7de343de620cb2b54dd744e3757d05d50b549082273a. 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/USA2P2115833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5744c0b4fb11ea7f60e134c0da8f60ada62eceed75adc81809144f9bc8f641d. 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/MXD782003595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84ea3adced7c9f99ff4c19b21920f8f80641f1ab605c59cb04c8d8148086b9a. 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/MXD782002784.
Chalito (En Vivo Desde el Roble Sinaloa)
Chalito - En Vivo Desde el Roble Sinaloa
Extraña manera (En Vivo Desde el Roble Sinaloa)
Extraña manera - En Vivo Desde el Roble Sinaloa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a1ceff629a480ff8e318e414c492819b899fe7826f2735a59d183ededf5566. 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/ESA012055233.
Como Esos Amantes (En Vivo Desde el Roble)
El Pajarillo (En Vivo Desde el Roble Sinaloa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a38f9a3f9c73ee073de4d7f803a3a8c73314e98f846e61359fb85be9012ea5. 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/ESA011958982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6d97d9a8017dbc5e50a133db7b0316fb80d6b9cb899558550623f5319d698a. 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/ESA011958983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a0fc2f31b79f97470323270255d2b1c8f8a5591133ba044b00bfaa13c6477a. 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/ESA011958984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc3683bb87ebf173f5a42ab59a36b05e009eb450bc4862914113c5493beefe7. 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/ESA011958985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb339bb6b4e48bf45ee7a236b30c4546ec885a0de429c7f652161844d2bc96a7. 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/ESA011958986.
Delante de Mí / Tengo a Mi Lupe - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee8e8eef10fa04423cdf682f0814024bd0f11882aa2dabe44cd0f977c3b91d. 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/ESA011958987.
Como Esos Amantes - En Vivo Desde el Roble
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf451e56e8cf5f8cdcae39eac461f1c31cacfacb30ccb8b9c64d3bf0905decd58. 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/ESA012045270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3243ab7ad10533a3133c64964fd36c242badb0f368d31613656bce76ca36cdfc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA012043668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94afa9edb9341bfdd47e758c2d5867694cccfd192b9d8d5b9f2052d47f648d7d. 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/ESA012033412.