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 0xc53829a762bca45c1d9e89e25fd9b18295c21ebbd6fd656796b97de2f6e7d6d9. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38ff7f36-ab11-4597-951f-41ec5928d6ae.json and https://artists.proofprofile.net/proofs/artist/38ff7f36-ab11-4597-951f-41ec5928d6ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keyboard Concerto No. 1 in D Minor, BWV 1: I. Adagio
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 0x43401f77a0e88c862f57827cff779d47ca64f1ee6560cf4f1aab22d1ed29349c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:01Z), 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/USE831525314.
Mi Corazón Encantado (From "Dragon Ball GT") [Melodía]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50343797b70651e782cf5c66255f8fced8db0ad04e8daca019b9cab3356db34. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPJ32457584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a33a4a858a1df5128a1eac555b59470372e22086c1e6a065a2f9ce905a6581. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:51:00Z), 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/QZPJ32471421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d58a0442901f1324bf4764c469602b017410d410df4fdd6c27a04df711004e7. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZPJ32479353.