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 0xf6c00dea2b4c4a8ceb439c99a327d02faf320e937ca7bf01324e730356f7a669. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc606157-b3f7-4cad-a5ea-ee9ad06f2194.json and https://artists.proofprofile.net/proofs/artist/bc606157-b3f7-4cad-a5ea-ee9ad06f2194.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Barocke Orgelschätze in Der Jesuitenkirche Mindelheim (Baroque Organ Treasures)
Johann Jacob Froberger, Johann Kaspar Kerll, Johann Pachelbel, Johann Sebastian Bach, Theodor Grünberger: The Baroque Organ At the Basilica in Benediktbeuern
Mozart: Fantasy for Organ in F Minor K. 608
J.S. Bach: Wachet auf, ruft uns die Stimme Cantata, BWV 140 (Digitally Remastered)
Franck: Prelude, Fugue and Variation in B Minor, Op. 18 (Digitally Remastered)
Handel: Messiah: "Hallelujah", HMV 56 (Digitally Remastered)
Liszt: Fantasy and Fugue on the theme B-A-C-H, S. 260 (Digitally Remastered)
Toccata and Fugue in D Minor for Organ, BWV 565
The 35 Most Evil Pieces of Classical Music
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 0x3f50a8e8727f4a7c90c9f44cc0b10c745f8ec0e654a9ca68ed54804ea6789074. 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/SEWDL0741302.
Sleepers, Wake! (Wachet Auf, Ruft Uns Die Stimme )
100 Most Relaxing Classical Music In The Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afffaca8ddf498c8f842306215c47d705e192b12e884487618cf09bab5a4a36. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USSJ10813897.
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
Ratswahlkantate in D-Dur, BWV 29: Sinfonia, Presto
Gabriel Fauré, Johann Sebastian Bach, Joseph Gabriel Rheinberger, Léo Delibes & Wolfgang Amadeus Mozart: Festliches Konzert in Der Abteikirche Amorbach Für Orgel, Drei Trompeten Und Pauken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d294815cc5b542dad0dfc81a56b408c4758c4b72ddc54d7426f709a7549f00. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEE219142601.