lautten compagney BERLIN is a German instrumental ensemble based in Berlin. Founded in 1984 by Hans-Werner Apel and Wolfgang Katschner, now the principal conductor, it specializes in early music and B
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 0x016ada42339ca78ac72ebf2ac166e18a99a1cc02a20cf56685e6e466686c6fae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3552eaaf-9fb3-4810-b56c-269a5d6c3a69.json and https://artists.proofprofile.net/proofs/artist/3552eaaf-9fb3-4810-b56c-269a5d6c3a69.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x54768fdead58631ed62f7ad46ecd952727b3237c25179ab425c2621e434e1fac. 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/DEE471900169.
Orlando furioso, RV 728: Nel profondo cieco mondo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0f2d187c3e4d82d35180433a296aadf83474613ae9e343812b06d8416b56b5. 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/DEE471900165.
Johannes Eccard: Fröhlich will ich singen. Sacred and secular songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0647d5611807f47e1586faa2ea97d4693505852fe905f4cad8328d22e2f5bf. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:18:49Z), 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/DEE472400323.
Frohlocke nun. Berliner Weihnachtsmusiken zwischen Barock und Romantik
Antonio Caldara: Nigella e Tirsi / Antonio Bononcini: Tigrane, re d'Armenia / Tommaso Bernardo Gaffi: Ditemi che Cos'e
Chamber Music (English Baroque) - Playford / Ravenscroft / Matteis / Purcell/ [Lautten Compagney, Katschner]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc681d791bf2d1ba72563c9cc121950bd611f72f2f784aec42004ae030bbc6340. 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/DEE861600804.
Schütz, Buxtehude, Krieger & Theile: Christmas Cantatas
Lasso, O. Di: German Songs and Instrumental Music
Praise the Lord. Luthers Lieder auf dem Weg in die Welt
Gimme! Gimme! Gimme! (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b78aa124146dca5bb6faae3afd32c515b2d675c1b03537a6f3b83132ec9c6a. 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/DEE472400444.
Les Boréades, RCT 31: Contredanse en rondeau (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686060ede9ab05b22cc5dbe0eab714e64165cdebbc839c0cc97762634f5a49c. 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/DEE472400445.
Voulez-Vous (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04aa44691bbd584cfdd5a5219372fc55ea9f3613574016e7533ba5db11ef391. 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/DEE472400446.
Naïs, RCT 49: Ouverture (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eef84cb7a86673c3d7c31d50c59f23ed84d7fcdc9c35d72503b7eb6d621cdb6. 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/DEE472400447.
Mamma Mia (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807805980b85a15f14dfbb156efc48a41c296782ec083ff73eeb6b66e3dad762. 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/DEE472400448.
Pièces de clavecin en concerts, Cinquième Concert, RCT 11: II. La Cupis (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc84838c9b47d4c68cde3dea3afe5062bfcbae86b0612b9ef7bf79e84accc9df. 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/DEE472400449.
Les Indes Galantes, RCT 44: Deuxième Entrée (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf8d69d6fde6b59efe711deb50afdcfc8e9b47b9b97028b5afa4405bcea2058. 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/DEE472400450.
Thank You For The Music (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932ec508966ae82e0bc55afc42310132c9e3369bdb1376bfe800822af432c264. 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/DEE472400451.
Les Indes Galantes, RCT 44: Premier et deuxième Tambourin (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237aa3bc0d5c0013f7a98ce9ce961ce4ed05367daef5b27af8e67beefb716ad. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEE472400452.
Take A Chance On Me (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aa38830972ea55e7378a2ff52c97ec2349484571c8788b62deb548f1e3510d. 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/DEE472400453.
Hippolyte et Aricie, RCT 43: Chantons sur la musette (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf034161d02ceee8ac485177f3410870ecdfc8afcde537a49d2fbe49e9144a903. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T15:38:44Z), 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/DEE472400454.
Hippolyte et Aricie, RCT 43: Chaconne (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec17f197c81bcc98b0e52ff3ebc9aa4cad0d1e24cb0f4dd4366b3c79064e93e6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEE472400456.
Suite in D Major, RCT 3: I. Les tendres plaintes (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9107e85c5b1a5b9ea2cd5c9dd4beb96fa5e22334ae94c5ed141ff4bb5205f5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEE472400457.
Dancing Queen (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e27476af7653d94d2f26247af4add2fcf77b66c2466549d2e2b934fd56a5e0. 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/DEE472400458.
Lay All Your Love On Me / Loure Grave (From Les Fêtes d'Hébé, RCT 41, Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d52b8fe4e351bde0da97f7bfafc7d963ab352f74ef5911d672a42d3b35df9d. 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/DEE472400460.
SOS (Arr. for Baroque Ensemble by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe927280787b8df774c353c5151c14481e77560b4068606ddee9b7c8923037c5d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEE472400461.
Les Boréades, RCT 31: Entrée de Polymnie (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5480fd98de1a5d2dd8f3614ee472af4955e8d90ab17c6ea2df04fc196afaf1f5. 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/DEE472400462.
Waterloo (Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd228f877e22562f7f67dd0ac4eb7ee1d5e34fd84e706ec446789e430b80ce51d. 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/DEE472400463.
Money, Money, Money / Tambourin (From Les Fêtes d'Hébé, RCT 41, Arr. for Baroque Ensemble & Saxophone by Bo Wiget)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a23d7b79a8c40f3434e2720e9192ae1a80f0fd7205a6a37c5a0a6c95e046a7. 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/DEE472400465.
Quempas (Weihnachten in Wuppertal · Christmas in Wuppertal)
Trio Sonata in G Minor, RV 85: II. Larghetto (Arr. for Baroque Ensemble by Wolfgang Katschner)
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Larghetto (after Concerto for 4 Violins and Cello in B Minor, Op. 3, No. 10 / RV 580, arr. for Baroque Ensemble by Wolfgang Katschner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52cfff8a53cea6839905f453009704b5dc56924a8849466f02cf7c3b17e2575. 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/DEE472200209.
La Verità in Cimento, RV 739: Dopo i nembi, e le procelle (Arr. for Baroque Ensemble by Wolfgang Katschner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0bbab9b3e8eae8a8e45faefbdea27812c4b9cb6556402fe428f480b1012f4e. 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/DEE472200220.
Because (Arr. for baroque orchestra and saxophone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6876c232c47e1fbe95c1056d4cff37bdc4ff769b973b60a535ecb294c61fdcda. 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/DEE472100111.
Dido and Aeneas, Z. 626, Act 1: No. 3, Ah! Belinda (Arr. for baroque orchestra and saxophone)
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The Indian Queen, Z. 630, Act 4: They Tell Us That Your Mighty Powers (Arr. for baroque orchestra and saxophone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a5a6a0c13486a6ac9a27866c45ee2dffdc7df8c68358ac75c499d778722554. 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/DEE472100116.
The Fairy Queen, Z. 629, Act 2: No. 13, One Charming Night (Arr. for baroque orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3bdc6bd7855794cfe2bca4629ef08629d1302cdc54e252eb70a42cda4879bf. 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/DEE472100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0324d1424fbe5c57756cd26b5a4ed64f4a4fb55a1fc02afd1b4089c9645b42. 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/DEE472100119.
Norwegian Wood / Greensleeves (Arr. for baroque orchestra and saxophone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b660edf040fc1bb2b05c31ed12bfc274427d6d2fc76219b5822428e03a0db4a. 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/DEE472100121.
Girl (Arr. for baroque orchestra and saxophone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd434f005b7246deef1bc8d1e675b7e51be88b73c1567d7074f7d6b21789b2fa. 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/DEE472100129.
Abdelazer, Z. 570: No. 2, Rondeau (Arr. for baroque orchestra and saxophone)
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Harmonia Artificioso Ariosa, Partia V in G Minor, C. 66: Passacaglia
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Klangraum Kloster Maulbronn: Bach Meets Vivaldi (Live)
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0f23989decbfdccfc81671b26f5e95ea65c162d46e4e5c704b1a064047d395. 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/DEE861701809.
Handel: Neun Deutsche Arien & Brockes Passion
Claudio Monteverdi: Vespro della Beata Vergine
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Buxtehude: Dein edles Herz, der Liebe Thron