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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e498235ef3e10c0af1341e4275230e53e9e08d6769b38b3fdd89ea41a91cc9. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49bf6f06-1a71-45e0-972e-f4025799efbd.json and https://artists.proofprofile.net/proofs/artist/49bf6f06-1a71-45e0-972e-f4025799efbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piano Dreams of Innocence: Melodic Baby Lullabies
Piano Productivity: Harmonies for Inspired Work
Harmonious Flow: Tranquil Chill Music for Yoga Practice
Tranquil Mindful Piano: Ethereal Work Flow
Relaxation Oasis in Piano: Serene Rain Soundscapes
Clarity Keys: Piano for Mental Focus & Precision
Yoga Soundscapes: Ethereal Raindrops on Piano Keys
Piano Music Paradise: Uplifting Melodies
Moonlight Sonatas: Calming Piano Melodies for Peaceful Sleep
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61d6222be0e83323e827ff3be05db53263d637d690ea81bd50890726bed061a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USLZJ2409261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda87aa3c5cd71479bf252fe96388b8e0faa7c3960c44554982c99fa386b409d6. 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/USLZJ2409286.