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 0x1628facc6dc1e4b0308fba20445f2d829aeaa0142e82b38951d253c8e1ade9c1. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a767b76-a9cd-4920-9b7f-6e684b3c8d1c.json and https://artists.proofprofile.net/proofs/artist/6a767b76-a9cd-4920-9b7f-6e684b3c8d1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mer hahn en neue Oberkeet, BWV 212, Aria, Duetto
Largo, from "The New World" - Symphony No.9
Anonymus, aus einen alten Duettbuch, 1740
Violin - Collection vol. 2 (classical music)
Cello - collection, vol.1 (Classical and Folk Music)
March Of the Priests, from "The Magic Flute"
Who is That Our Brother Does Not Remember
The Old Man is Old, Can't Be Bothered to Herd
Woodwind & Strings - collection, vol.1 (Classical Music)
Brandenburg Concerto No.1 in F major, BWV 1046:IV.Menuetto
Tempo di menuetto, from Drottningholmsmusiken
Woodwind - collection, vol.1 (Classical Music)
The Birdcatcher's Song, from Magic Flute
Silent Brothers, Bacchus Has Fallen Asleep
VIOLA - collection, vol.1 (Swedish Folk Songs)
Polska efter Anders Johan Eriksson, Öland
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 0x008d3545ae6517186eb4da0de2628381fd3ec1ca204d4f5982f1a387eaa4f9e8. 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/SE5XG2323801.