Siegfried Ochs (19 April 1858 – 6 February 1929) was a German choral conductor and composer. Life Born in Frankfurt, Ochs first studied medicine and chemistry at the Polytechnikum Darmstadt (today th
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 0x608b4a27930b0572aedfd5af876fdc698a97399d1fe244c2cfb45d5dbcf9cf80. Chain 2 (Bitcoin): anchored in block 954131 (2026-06-17T19:19:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d533b64-b450-46b2-a420-6a4c107e511d.json and https://artists.proofprofile.net/proofs/artist/7d533b64-b450-46b2-a420-6a4c107e511d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Harmonious Blacksmith (Air and Variations in E Major from Suite No. 5, Book I)
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 0x0cbd35edad7f0d8f3fd803a556ba945c41f71e6b6a2c45c7bc7b84640089d1e1. 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/USSM16800704.
Keyboard Suite in D Minor, HWV 437: III. Sarabande (Arr. for Chamber Orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf2e7851c28b7df844271654c00d39bd0ad6d245690d10c5258c41a2c58fdf7. 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/USSM19930127.
Eternal Source of Light Divine from Ode for the Birthday of Queen Anne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cfb3a6a7969ee8a5b289ace2325ebba4219bd5c89a57dc670dac5ac7081180. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USSM19932116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0c24ce64381fe500fccf03fc6ab94255f62b5c2f846bb0e62f92c55f7adc7a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USSM10601790.
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 0xddf38f7fb8766a6556b662ed67eb5ebffa96b44aedb7b158bea2a7729e53d490. 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/DEU921706801.
Die Zauberflöte, K. 620: "In diesen heil'gen Hallen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb675bb40689d7d7154983675e923ab9e8b19fa6ca3641ccbf53a7d0320041fd. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEF055303340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936fc590bb4807e7588142f9654cd41ed4701c45ff6ce024860ef75b620d116e. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEF055305610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33555046c4cfe25a7497cb4b17b6cef31200c790bee939dd421559f53d32641e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBBA0541210.
Herz und Mund und Tat und Leben, Cantata BWV 147: Chorale: "Jesu bleibet meine Freude" (Arr. Chris Hazell)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29342352bdb5cad13239980ea6e6f8aed038abce92b790043d05f5abb9ea8c1. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBBBA0541220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb62289013a673602a8f7ed5ca7a1bffb6e0fcb5a9c0367d4c44246269313d3. 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/GBBBA0541230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ef2b36e5511561724ae080baab4e262b391e16de5bce2203ad75be89c53e30. 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/GBBBA0541240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd102d344ee62147c87a24d095ed36700cc98fc52ce07f613e7bcaf30d781d4b. 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/GBBBA0541260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664467b317160e14b7258b7fd56b392548abcb3bad900a5ab7d48c6e0b263a6c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBBBA0541280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4035d7f48fd806dfe44aafdd057962763611064bfbec9d23d6de2d4b9c84f5. 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/GBBBA0541290.
Vesperae solennes de confessore, K. 339: Laudate Dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780a097c730145d1135ceac577e1c95521b6c98af2a17bd2983356ace7f3996f. 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/GBBBA0541310.
Messiah, HWV 56 / Pt. 1: Rejoice greatly, O daughter of Zion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b472644bb93ff364b0ce3081be388e310e96b9a465dd15bff8dc924e19ec25. 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/GBBBA0541320.
Hänsel und Gretel / Act 2: Abends will ich schlafen gehn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57511422e9d8aa5cafb57a52c2ab4612cfa2984d46f65b15c89e1cf9696d1960. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBBA0541330.
L'enfance du Christ, H 130 - Arr. Chris Hazell: L'adieu des bergers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7444e5b53882ac3126b93b9ea38331fa778d143a284bf47385bacb86dace7905. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBBBA0541340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98da5122bd0725af048a28238c1c6b90b622efc9bed0d6682002fb2af2f42be6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBBA0541350.
O Sole Mio: Classic Love Songs for Violin and Orchestra
Polish National Radio Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7560c46e753582f42cc603e1faf2a4aaa105d4a52132a34aed5db4f53d16c4d7. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/HKI199391801.
Rinaldo, HWV 7, Act II: Lascia ch'io pianga (Let me Lament) (arr. P. Breiner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d909d5f96f75aa1f77557ab58ebae6dbc8e24736ca4508a1dbe9cc3b9ca338. 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/HKI199391803.
Zartliche Liebe, WoO 123, "Ich liebe dich" (arr. P. Breiner): Zarthliche Liebe, WoO 123: Ich liebe dich (arr. P. Breiner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4b4126b1255574995e9f426ca9b11892b66eba24376c40ef2d59855b797bd0. 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/HKI199391805.
Heidenroslein, Op. 3, No. 3, D. 257 (arr. P. Breiner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cda5c6aa050b5764b423311a027e6b4798929bf986a7e9c5f7d644cc1d9888c. 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/HKI199391808.
Liederkreis, Op. 39: No. 5. Mondnacht (arr. P. Breiner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6eb517eb714c81a983833be4b6ec88088a73d9248a7a6add127ff1cfc6f68b. 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/HKI199391810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57c49b8bc6d758a46b395627fb02c5c93fa5a51d41a19c7913984dabe8dd5cc. 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/HKI199391817.
Peter Breiner: A Journey – Calm Romantic Piano Music, Vol. 2
Eine kleine Lachmusik - Musikalische Scherze
Was machst du mit dem Knie, lieber Brahms?
Opera Arias (Baritone): Bonelli, Richard - Ambroise, T. / Massenet, J. / Gounod, C.-F. / Giordano, U. / Verdi, G. / Wagner, R. (1934-1946)
Alleluia... Alleluia, airs et chœurs religieux célèbres (Stereo Version)