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 0x7659c5b9df215dec494c257f94bb9f67a4b89e596469ce1d48fbb5b118743a4b. 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/4ac9ce7b-96ce-4aed-b501-512f1359cf3b.json and https://artists.proofprofile.net/proofs/artist/4ac9ce7b-96ce-4aed-b501-512f1359cf3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Andrea Chénier, Act III: Act III: Nemico della Patria?! (Gerard)
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 0x3302d203c0f226cd37ab78f6c86c550a2b4f666096536de8f134ba769bd241d6. 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/DEB950668214.
Puccini: Turandot - Verdi: La forza del destino (Excerpts) [Live]
Wagner: Die Meistersinger von Nürnberg, Highlights (Mono Version)
Richard Strauss: Les grands opéras - La discothèque idéale de Diapason, Vol. 7
R. Strauss: Salome (Clemens Krauss: Complete Decca Recordings, Vol. 8)
Strauss, R.: Ariadne auf Naxos (Live at Festspielhaus, Salzburg Festival, 1954)
Strauss, R.: Salome (Goltz, Patzak, Krauss) (1954)
Wagner: Meistersinger Von Nurnberg (Die) (Schoeffler, Gueden, Vpo, Knappertsbusch) (1950-1951)
Strauss, R: Der Rosenkavalier, Op. 59, Act I: Einleitung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6987b5cfc7283e659c29d2f3c4a02ca03a1bb2c2938b6e978d29e5d50d9c0103. 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/GBAYC1701666.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Wie du warst! Wie du bist!" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ea54d6e7d286082edc0bd01b2200c852d27506f0d761576ca881481f1e3538. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBAYC1701667.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Lachst du mich aus?" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2563e5aede1a2407f05700ea6794f1ab58a93fb670eeddf964a5f91b072c1e50. 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/GBAYC1701668.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Der Feldmarschall sitzt im krowatischen Wald" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99dc79e96374926dfdb4ac822d2a50bf29b19685e38da7b18859637c6939f07. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBAYC1701669.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Quinquin, es ist ein Besuch" (Marschallin, Major-Domo, Ochs, Octavian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb86e868c512e5fc941bb8723123d9e7140cff0c597c845b000e985a17e7a01. 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/GBAYC1701670.
Strauss, R: Der Rosenkavalier, Op. 59, Act I: "Di rigori armato il seno" (Singer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862dd73206123c7c4a1b7d2b2a18a1ad84218cf719b3beaf40faa9420755fc6e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/GBAYC1701677.
Strauss, R: Der Rosenkavalier, Op. 59, Act II: Presentation of the Rose. "Mir ist die Ehre widerfahren" (Octavian, Sophie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e6e989454d8a7a412d57722ed773a11d4a2113220a0816769ded9c3881b494. 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/GBAYC1701689.
Strauss, R: Der Rosenkavalier, Op. 59, Act II: "Hat einen starken Geruch wie Rosen" (Octavian, Sophie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4e32948cd29a13fc53a671e9f9c82b38ae9c572d8bf7126b2772802db47240. 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/GBAYC1701690.
Strauss: Le chevalier à la rose (Mono Version)
Le chevalier à la rose, Op. 59, Act I: "Einleitung"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969ab6c52e64412d84e73482f811c71214069efa71986f12f5e765949df38fd8. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRS181210766.
Le chevalier à la rose, Op. 59, Act I: "Wie du warst! Wie du bist!" (Octavian, Marschallin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5c5d3d197b06254f140025cdd38d79ed20f583f8769280d356f1551d14773a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRS181210767.
Strauss, R.: 4 Last Songs / Arias and Scenes from Arabella, Capriccio and Ariadne auf Naxos
Strauss, R.: Rosenkavalier (Der) (Reining, Jurinac, Kleiber) (1954)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede9b5dbf1667562ecb18603f34d08dba1f085ca89a3c844849e15cf05094df7. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/ATP130301801.
Viktoria, der Meister soll Leben (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c76118ba0684f721a5a0271c1aeaed112677f59fed96823b5c6fcbbc594da1. 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/ATP130301802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689a8b7361d5df7f3b30ab0c735eb4128e79278539c1dd47b1853a7ebf0f2f5b. 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/ATP130301803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7f9e12a136dff8b1632b94aa2baa80de7f4b4115f75228819653466fff9aec. 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/ATP130301804.
Nein, länger trag ich nicht die Qualen (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ff949daedb40fc483b5031844c1d5d2ac1ab5eb575bbca2156bea83fc984c4. 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/ATP130301805.
Hier im ird`schen Jammertal (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0719ade0bc82672e74814e48ee859521a7e203c600d5f529effdabc2078e7c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ATP130301806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd927ae4c55f044a81d570e52afe2001e5f96bfac83313291445a6d59b04da2b0. 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/ATP130301808.
Kommt ein schlanker Bursch gegangen (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b8ab022e3e858447f9d04ade6601b475b8b90e84ee1251734e83a5d2dbd16c. 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/ATP130301809.
Milch des Mondes fiel aufs Kraut (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3165264300edd24be473bb5a17d80d5e92e161b9348679b324e1a3ade74a4d. 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/ATP130301812.
Und ob die Wolke sie verhülle (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0b2b80709d13203e78962b91ef3af767ea635fa962d625a9e8e30609a31064. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ATP130301814.
Wir winden dir den Jungfernkranz (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4e7911b46477b693b8250ee51557ab034e3ba9cc4d42185f3215714ed3af27. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ATP130301816.
Was gleicht wohl auf Erden (Der Freischütz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d70746bb8b5164d24a95b9efe1cdd9074df553fda62dbfa5a22a9964b5f99d2. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ATP130301817.
Lortzing: Der Wildschütz (Excerpts) [Live]
Beethoven: Fidelio, version abrégée (Mono Version)
Beethoven: Fidelio, Vol. 1 - Live Recording 1953
Beethoven: Fidelio, Vol. 2 - Live Recording 1953