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 0xc38ba29ae18131e7b3b79977e349ee5e4a456883e4c25c12b9e3c6765548c9c7. Chain 2 (Bitcoin): anchored in block 953695 (2026-06-14T21:42:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6fad7abb-eb0f-4704-9a22-c08cff45abff.json and https://artists.proofprofile.net/proofs/artist/6fad7abb-eb0f-4704-9a22-c08cff45abff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Baby Träum Schön (Die beliebtesten Spieluhrmelodien zum Einschlafen)
Spieluhrträume (inkl. La Le Lu, Der Mond ist aufgegangen, Guten Abend, gute Nacht, Weißt Du wieviel Sternlein stehen, Schlaf, Kindlein schlaf, Müde bin ich geh zur Ruh')
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 0x56643653613988c2091cb642dd6909169edbc12b9aadd26cd5109a115202c0a2. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DENF41200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954dcdf9e55f6209932aad50e385ccaae6efa527995e1e52086dac3d83a4e7c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DENF41200110.
Die schönsten Spieluhrmelodien (incl. Träumerei, Funkel kleiner Stern, Heidschi Bumbeidschi, Schlaf mein Prinzchen, Es wird schon gleich dunkel, Kindlein mein)