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 0xd993ca5c6fda2212a71e95e9b1856c3658eb6d1678abe1a7ea3eaebebd193300. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddcbe601-3345-4b65-8058-ba78ccdf8463.json and https://artists.proofprofile.net/proofs/artist/ddcbe601-3345-4b65-8058-ba78ccdf8463.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 0xc414b7f6ff2f59dc68767beefc146097cf6e3de25237a09d2fa958eea700da5e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:53Z), 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/QZ2HB1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c00f76e30503070d5b063b453b8b15479a07c079e228de7fe38b11eb9c813e. 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/QZ2HB1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67e008fc5750402134b09d50957d7d252a376fe7b106cd8b1ed357b70e69272. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZ2HB1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc1224c285af2ec5bb1a22d8e7e1f609b64a77de01e730f96df349f7fe92041. 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/QMK2F1910124.
You Feel It Too (Caught in the Rain Edamame Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7d3451ecf92907e2e2b214a4ec6e2cf0aba39e3a9d46e28d0f5f67e704086a. 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/QZZ7W2458829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96d89848128d2fe814e0bf9c8c31610605f4c78fe8e68c609fd32a891adbfda. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZDA82590793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c564afe3f683cc7ebc78133bd26c79fd1fdb68ae8edde344a52f1d1c58add85. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:11Z), 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/QZTAU2599964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4e569b7d4f9f29d414deb3911ce5b898e0be2fc2f824945cf7e950713808e7. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWFU2584699.