1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa0abce92e2cda604869feb279b78fd17acf0b0bdd85dea374dd22252296c0243. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1309701d-9748-45db-b6fa-1930b1c8b889.json and https://artists.proofprofile.net/proofs/artist/1309701d-9748-45db-b6fa-1930b1c8b889.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wunderbar (from the musical "Kiss Me, Kate")
It Might As Well Be Spring (from the 20th Century-Fox Film "State Fair")
Anniversary Song (from the Columbia film "The Jolson Story)
Bei Mir Bist Du Schoen (Means That You're Grand)
Alice Blue Gown (from the musical play "Irene")
Hi-Lili, Hi-Lo (from the M-G-M film "Lili")
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 → block OTSBitcoinBlock must exist at that height 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 0xcdc4fe1c92386ccedb375274ac349cfebc36420ff16cdfe51ef9f88c5a0437a7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USBC19710214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e0253b68a019cc34f05dab886fb1601bb15e5084afb06d57b31561aaf7c65f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USBC19710221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c8cb0c39202a53d05725bc39ad7884d28bd9e0df8679a043ce611edef9c7c9. 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/USBC19710227.
Ballroom Classics - Fox Trot, Waltz, Mambo, Tango & More
Rumba: Cherry Pink and Apple Blossom White
Fox Trot: I've Got My Love To Keep Me Warm
Fox Trot: Bei Mir Bist Du Schoen (Means That You're Grand)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc732be43c606ae915e8c0fc261c303ea689c4906671a459f0c18a19d0567b05d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USBC15900129.