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 0xc787c2e250a63970721724a1a37afca5c5761961cfdfa3e2e64902a63ed717c9. 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/9c8f1932-741c-4dfc-a547-0baa830f4d01.json and https://artists.proofprofile.net/proofs/artist/9c8f1932-741c-4dfc-a547-0baa830f4d01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Internacional Reyna de Corazones, 3Er. Concierto
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 0x7c59e6151ea3beb8c8e164e0e3c743b1c316f1e7b8233b6009b47266a302c2fc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:05Z), 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/QZW9L2331422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83eb4c51fbf50d3dddd242c1ef2e2b22c9a05a641259886afb03b8f6167914af. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:59:48Z), 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/QZW9L2331425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd69a39736bf1d2fac3ad21869caf17320af3561ce5197c07c3eeedf480309b3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:24Z), 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/QZW9L2331426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070c97ea357d17175a2eb7bbc35cc2d278398a8a42c86429bfabbe6b3d18397. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZW9L2331427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6030bcd60f11ca3b6df54d14936fa7c2375a6407de5e072eded79dbfaddac6f9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZW9L2365572.
Prefiero Estar Lejos / Te Regalo Mi Corazón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb50311780cab3b6a3f389ca82fbd7aa5cd27859d1c2fbddd648df0db7d6dbf. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:05Z), 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/QZW9L2365575.
Nacida para Triunfar - 4To Concierto - La Internacional
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a198e1af4956f6c0f9fcac3611ae33728bf4d57f0567e7ba499a01dfdf57fb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMZ92428064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a9985ff7e52efb481bd0d9df71cabc0e8d4d5bf4298d04abbe2822e237ccbb. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZMZ92428065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112aa13c6076197918e9dd1080fab757db80f5a3a7246022502ff93192c91e87. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZMZ92428068.
3er. Concierto - La Internacional Reyna de Corazones