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 0x687fb89b1b7b9ee5cca60b05a1e95d35d05fcfa27ca469d74a0886fd0b8eb6d4. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc4bbd37-5945-47ae-8a63-130b588371f2.json and https://artists.proofprofile.net/proofs/artist/dc4bbd37-5945-47ae-8a63-130b588371f2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Zenryoku Summer - Esp Lat (Aho Girl) [Cover]
Solo Leveling OST - Dark Aria | Esp Lat (Cover)
Solo Leveling OST - Dark Aria | Esp Lat - Cover
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 0x5aba22a736e5e71b8553d75f166b0060749ef3a8b7836d6e3690639812855977. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:09:54Z), 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/QZDFP2122826.
Mashle OP 2 - BLING BANG BANG BORN (Cover)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac437784d2e8b73f23b503fced6ab398343d95e5516e510823227f31bac97ca8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDFP2125537.