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 0xd9b57637a0b5f77015a25cd936530fd2e5451368dc3255d5118107b4fb6d9bbe. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c552f50e-7afd-499d-83ff-27045b089429.json and https://artists.proofprofile.net/proofs/artist/c552f50e-7afd-499d-83ff-27045b089429.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Can't Give You Anything But Love (feat. Nikoletta Szőke)
Piano Concerto No.7 in G Minor, BWV 1058: Allegro
J.S.Bach Piano Concerto No.7 in G minor Andante BWV1058
Piano Concerto No. 20 in D minor, K. 466 , Allegro (improvised cadenza)
Csillagok, csillagok... (A magyar zene ünnepe)
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 0xd690483507b6412d389a2902c655ec9506b89319a75ef34f785073910728fc10. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HUA230802602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2556e7564540e9baf2b14b10c939a1f418c66f5354fac8bdb3e8a51e3b1d3ed1. 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/HUA230802613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68f6b5aa4092ce472504dcf66d74d9fcfcfe19e15ee23cc338f074f8121346c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HUA230802614.