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 0x6f3ba963f683b78bc75edc2509bcfbf0d2b08ad8363f394b909700d108952a87. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbd5b271-0ec3-48d1-930a-7106a1d33ae8.json and https://artists.proofprofile.net/proofs/artist/bbd5b271-0ec3-48d1-930a-7106a1d33ae8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everything is perfectly fine (Freestyle)
Schoolday 3 (Yandere Simulator Original Soundtrack)
Schoolday 3 (Positive Atmosphere & Half Sanity)
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 0xa1dc46cb8dcccdaf861ce7b60ab537a6ae9f84f3a8bc313895b79ad02adaf28c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZK6G2111501.
Schoolday 3 (Positive Atmosphere & No Sanity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3516139594895c9056e27859c9ada92ed7b05fec52a11ff091365bc830c62024. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZK6G2111502.
Schoolday 3 (Neutral Atmosphere & Full Sanity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f6fde8907c0ec3a5324d75a82e5a109a49d1b978b3fe9bd9647ecb18e4a022. 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/QZK6G2111503.
Schoolday 3 (Negative Atmosphere & No Sanity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45df638afd07d34c1ae5fe1ec119d710a42d6760a1ed8fb2ce718e98144289fb. 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/QZK6G2111508.
Crépuscule pt. 1 (La Bande Originale d'un film n'ayant jamais vu le jour)
Crépuscule pt. 2 (La Bande Originale d'un film n'ayant jamais vu le jour)