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 0xdffdc1ac8b8e9efb66bc3d6a18c64b30b2be64b528f875fda184809415ef8ae1. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62469acd-8d54-4d48-a8b1-55c297daf403.json and https://artists.proofprofile.net/proofs/artist/62469acd-8d54-4d48-a8b1-55c297daf403.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb977755358a6cd708b146536641044dd53ec86c6bba714f8d95803fb9ff8bef5. 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/ES33B2046903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966dcfdd97e7d9de0b2e266fbb855c04d17d69c94e71ccc8a93acc05aa072641. 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/ES33B2046904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f68316115477cef6ffae53b8335bb1f653cc1d54bb853a28cf4001999c4009. 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/ES33B2046908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3465edf8f7e81b4e14603b5471367115cfcd0fe4674473c16053afbcfd0c85b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ES33B2046912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f6f969fb1621d2fa7aaa72891373c30df9a0df93bffe36bf1fd4df95175c04. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ES33B2046902.
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 0x61732bafaaf0b78f4c7b33fd5f6682cd050363a2499d12065134e1418d99aa0f. 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/ES33B2046911.
Caravan (feat. Eva Durán & Jerry González)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d846de541c9df71993d907aa2e855a6678ee36e1cffc34d6718dd844cf5f7cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES33B1102701.
Verde, Que Te Quiero Verde (feat. Jorge Pardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982fb647503d826732c574a3f5ff298ef29f7e488eb794699bd3e185fd298f76. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES33B1102702.
Los Duros Antiguos (feat. Chano Domínguez & Tito Alcedo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e85c1b99361478e984263b5162d29c64ac6c9f5765e2edd004e03cfb136e4. 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/ES33B1102704.
Conil, Belleza Singular (feat. Gladston Galiza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebe84ac599ac59d9f6d3ca70a5b9ed67b1ec4ee2b66e930d17301693358d8b6. 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/ES33B1102711.
Chega De Saudade (feat. Gladston Galiza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169ea29432b47bcd39828fa956a23990dfd7d1e179ceaab5cdaf0b7a4cc969e7. 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/ES33B1102706.
... y Todo Es Vanidad. Homenaje a Javier Krahe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff48a170d8d8b14e677097ae7d6220aad349e56391b27c9483c4222f24d9e8e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES6390200140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4589fd6f55f02653077d178a9dd4761db8fd527a0532c1df891b99c9ff7d8f6b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ESA031900106.