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 0xbc81ddd5fb38f836c453931f5842ef2ed457ebb43179ff4506de1ad85e10157f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f1af11d-4cef-45c8-a4b8-207fce65eb30.json and https://artists.proofprofile.net/proofs/artist/3f1af11d-4cef-45c8-a4b8-207fce65eb30.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 0x92fbc61d30ab4c2b570ee3b73808afc0998a51c38184868b8d5cb787c5f0cc7d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/ARG991018903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc0c1034eb831fdd1e514e79b16b3b8d43e3c4b0f7f5334d8a6805b5b26f71d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARG991029993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598fc9d87466f8f0a30f166bb0ff5dcb321025ebe4be70aa91bf448f00c44579. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ARG991029997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f912cc80febee96e1e33d09785ccdc81e2556b5fa5ef6d3c5934c1e4b9d2b7. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:23:56Z), 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/ARG991030001.
Enganchado: Déjate Venir / Amigos En La Distancia / Te Fuiste Sin Pensar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0e5eb3ce644fae08c492b238ca60cc3f4f3d9ad01d13c60e0789d2b045581f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARG102420644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa846601aa748afbbc0e52f5ad242e8a4b09ee783f9e8b8b76990cb599678b670. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:35:31Z), 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/AR5UH2400975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0d96fff602fbed146f23daa0118c803bbc3af7c9c1244438425691bd74083a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ARG102420792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36421c51ca52d6fd2591bb3006718c68561944cedbc075b2f4037f7054469a7f. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/ARG102521012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0ec702a6ff1531eaaefef40e6793b6890a6166fa04766f06723cfc9756ece. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ARG102521093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38f9f62ab58becd1b0da855c05126109b2bf493ea7b72d19e01094fa5aaecc. 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/ARG991025405.