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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dbf536a238d79f5532933382296aea3ff5d0249297df030e26d89a719fcfe7. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c035bb1c-15cc-4936-b3c4-a91b792861c7.json and https://artists.proofprofile.net/proofs/artist/c035bb1c-15cc-4936-b3c4-a91b792861c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Django Extended (The Greatest Gypsy Hits)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7e1026ccfdcffb7b30b214896d7929a0f3ee6487b598b4c2ef3def662501b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W11716122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110cc490012a4f0a24fa6dd82ab517cf713e89806fb38f4d72b11e366b7bd57d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9W11815736.
Fascinating Rhythm(s) - The Music of George Gershwin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28d0db80fef23a6dcf4ea6828badcb8ad6e46be333d74992268a854f51b7c96. 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/FRUM71701518.
Navidad Nuestra - La Anunciación - Chamame
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133d9d6cf56d53de7b1b415da18d7487b4b32e5c0bc9fee934b515f23aa6db20. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR9W12464654.
Navidad Nuestra - La Peregrinación - Huella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d2d80819f2c95d5324f353277ac56798073e2dcdf80c889b49823c9fa50f0f. 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/FR9W12464655.
Navidad Nuestra - El Nacimiento - Vidala catamarqueña
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63d2f97a788ed93b6d1a41187e2f36ae3727c70a918fe0caa6233b23998dfd8. 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/FR9W12464656.
Navidad Nuestra - La Huida - Vidala Tucumana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be931eab650fc6490a04d7ea4ef261e6eef57d42504b78074258d3312b7cc81. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12464659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac352f2afe5c3285a7a9de6869db6d4e0e5d0b1fbbfdc80633ff843c97297810. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/FR9W12464649.
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
Misa Criolla - Gloria - Carnavalito-Yaravi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f097083e0a83fd7a1e55ef413de50320c68689a82e101eb9951bf407f1628a1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/FR9W12464650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07498b2b3ebc2579b2ca9b8e5c69c3dbd142dceade3325522d5cf78f8595742. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR9W12464651.
Misa Criolla - Sanctus - Carnaval Cochabambino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b9df217537824b92a6cf71f86ea32f2550fff9cb23acea5b634d6725ce740f. 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/FR9W12464652.
Navidad Nuestra - Los Reyes Magos - Takirari
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147ae15ba9cbe3932820087d13b846778ce38531b7047e0f15fdb24acdde503a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR9W12464658.