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 0xc2a65820775ca7cbc035cfce1f2281954b5fe690c866f033c213b4d81664b633. 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/6cb7d6c2-0cc3-4d0c-9c4c-21d119eb6227.json and https://artists.proofprofile.net/proofs/artist/6cb7d6c2-0cc3-4d0c-9c4c-21d119eb6227.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 0x20456878ca7fd219a0dfe9de3a32603fc9739067a234135b416dcc3ebbfd343a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USHM81490734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d07894576b63cf1ae7e41fdba806173685cbf73367d3dfc33018ad53c093e1. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USL4Q2102110.
Tiempos Mejores Remix (Versión Merengue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a0a4d3f408a19264858c3ff83c1b34bde7f60b7743b573992359d13965648f. 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/USL4R2093609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab002db633698d5c5d240ddabc58efaca02468bc94cb6de916699497c5b045. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:54:57Z), 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/QZN882286938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562a7dfd0830a11b558079030d33ce0b2910d3c32c86ed84f7fca219fe3f675a. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZN882386486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fb7927957431912451550f44cfc78fe5819cfd6b0eb4cf9fbc60e091008784. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZXYG2305670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfbf454bbce4ec4c0313fe2b29a29c350236acf05e4808f6dee2f42cf6e2287. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:04:31Z), 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/QZXYG2501053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da04644c500e975b0a9c52fbc3e0fd976cdce573651483363ddc4937c928de0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFL2534980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b0062b1c1ca30347e1aa91c4a6de58d121be8017420f999e4d6db6f8ded903. 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/GBWUL2102204.