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 0xd3a1bae41f441b16795fd6677474a57a62e0962ed15dd7a4b264076f9e29d348. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2310bc2-4876-4c50-be19-7aebf37b6691.json and https://artists.proofprofile.net/proofs/artist/e2310bc2-4876-4c50-be19-7aebf37b6691.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vanhal: Stabat Mater in F Minor & Symphony in D Major
Weber: Clarinet Concerto - Querfort and Molter: Concertos for Trumpet, Strings and Cembalo
Brixi: Concerto No. 1 in F Major for Organ and Orchestra - Handel: Concerto No. 4 in F Major for Organ and Orchestra, Op. 4 (Remastered)
Stamitz, Paisiello & Liszt: Piano Concertos
Mozart-Concertos Pour Flute-Concerto Pour Flûte Et Harpe
Flute Concerto in G Major, C25: I. Allegro
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 0x094c7c447d38a86c36c49299b70ac35b0e1e50d11644fa43763d993acce5211e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB950309501.
Flute Concerto in G Major, C22: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4db9391bf2daeec36440d4daa8bf6c7d16356fe254ff0113bb5e4f930730f2. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEB950309511.
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
Rejcha: Lenore, 3 Fugues for Chorus, Harmonie der Sphären
Mercadante: Works for Clarinet & Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea3c84ab6c6148a39f826e11d88436a97fab487ccf6eb0a06a8a97285763cc2. 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/BRBJU2500984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f08a93060b473c6443fe600799ebf2e6e8acdab903362ae2c3f04729e50d418. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRBJU2500985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb951110a72f64185418c907d0c624f8782bea0c35aa562275f18a63ff7722d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRBJU2500986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334d3ba1a07a6f04c52177655e7d486a27bb29696fbcd024f6d177c84f1c2544. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRBJU2500987.
Flauto Cantabile (Bohemian Flute Concertos)
Stravinsky: Danses concertantes - Fried: Gothic Concerto, Cassation
Matys: Music for Strings - Gemrot: Maxims - Lukáš: Prelude and Rondo for Violin and String Orchestra - Kocáb: Festivals for Understanding
Haydn, Wagenseil, Albrechtsberger, Telemann: Brass Concertos
M. Haydn: Divertimento in D Major, MH 68
Baermann & Mendelssohn: Works for Clarinet
Beethoven: Symphonia No. 3 "Eroica" & Die Geschöpfe des Prometheus
Mozart: Piano concertos No. 24, K. 491 & No. 25, K. 503
Guitar Recital: Torroba, Falla, Albéniz, Turina and Rodrigo
The Most Relaxing Classical Music In The Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4291c2b74e99de212a301e37547b9f2b8d99e2eb81fca512bda0e57ec5837d4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSJ10301389.
Concerto for Flute, Harp, and Orchestra in C Major, K. 299: 2b. Andantino - Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5338c69b1173043af9bfb7e13c487b33a35424f8540dd1fbe839e07eecf71b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRUM72200486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b495e7ce5807949636db6a72ee9a686c8efa28d981f0c95ed7d54a5f45479c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USSJ10301403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5691109d0556ace2c67ddf3a3e81fda633de585336a6f50b468f3e43482a9445. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USSJ10301407.
Cello Concerto No. 1 in G Major: II. Romance: Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040c25707d788f9f9239db13da86c08e118663c50888188354db3c6f36f0df3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKI199312202.
Concerto in D Minor for Flute and Orchestra, Wq 22: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daa76a90bb75810c6ab02a221892c5344415a853bdd61e3caba0dfc3a5b6053. 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/SEWDL0769901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daa76a90bb75810c6ab02a221892c5344415a853bdd61e3caba0dfc3a5b6053. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEWDL0769901.
Symphony No. 17 in G Major, K. 129: II. Andante
a calm playlist for reading, studying or writing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd675aec584fd8d2ec410b25d5ca1d9392a9e2b910890197cdf3e89aaaf31b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USTE10413242.