thumb|right|275px Robert Barto (born 1950s in San Diego) is an American lutenist specializing in the music of the Baroque and Empfindsamkeit periods, in particular the oeuvres of Sylvius Leopold Weis
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 0xfa061970263c4c3f71b26a4f99bd5685fc61137b27eca9fbd81748755aa9316b. 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/826dca98-a1b9-44f2-a866-8e78d427fb3c.json and https://artists.proofprofile.net/proofs/artist/826dca98-a1b9-44f2-a866-8e78d427fb3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hagen: The Augsburg Manuscript Music for Lute
Weiss: Dresden Manuscript - Music for two lutes
Sonata for 2 Lutes in B-Flat Major (Reconstr. K.E. Schröder): I. Adagio
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 0xebcbefe610f838d9546ee1d35688dd398e1683e280ca5e5fe3d225dcd19b27a4. 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/CH1491123809.
Lute Sonata No. 28 in F Major, "Le fameux Corsaire": IV. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9155339c6f0fface387cbe7c2f6db79c8f5914ba38776b835e27680a4d853afa. 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/HKI190926204.
Lute Sonata No. 28 in F Major, "Le fameux Corsaire": VI. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0740584bea9a49aea33a008fc851024ab328e2bcb93f86228efc225301c173. 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/HKI190926206.
Lute Sonata No. 40 in C Major: III. Paysanne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63889afe0f9786a7c12b98561478d34124efb7301d3a5e600b8b97d2bc6eee68. 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/HKI190926209.
Weiss, S.L.: Lute Sonatas, Vol. 9 - Nos. 32, 52, 94
Lute Sonata No. 52 in C Minor: I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30c47a6d8cd6c6f58a99fa9b60fd2fcbd8c62c77d6a8a82dd75ae364dd1a97d. 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/HKI190806101.
Lute Sonata No. 52 in C Minor: III. Bourree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4082afb3f10a13aef99ccffe665d568b2414df0c63ee7b86a4132a108b79dc5. 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/HKI190806103.
Lute Sonata No. 52 in C Minor: IV. Siciliana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d340254baf8af4f3695330ba5f3384d350ad8ce588f1bbcb9fcc05cbd3b5f4a. 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/HKI190806104.
Lute Sonata No. 32 in F Major: I. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f552b10a6aaf6dc93a62f716c23d15342cd3b9a0f28d639a2729ac2806ff14a. 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/HKI190806107.
Lute Sonata No. 32 in F Major: III. Bourree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cb7a08092b62830e0ad9ea522e62a60be8c3175981018f41838e68532fe9c9. 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/HKI190806109.
Lute Sonata No. 32 in F Major: VI. Menuet II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25ed62b5c822f133003a56f42c66b57d0f1416831ed66db7b691d5da3c198e0. 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/HKI190806112.
Lute Sonata No. 32 in F Major: VII. Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f895f594e4acde1be75ae93fa73fb32efb5e10c9f6be743123b391940a69759. 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/HKI190806113.
Weiss, S.L.: Lute Sonatas, Vol. 8 - Nos. 19, 34, 36
Lute Sonata No. 19 in F Major: V. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98eee64c6965046ba01c245b929303744bdd55ee95c2c42216530dcc8223401. 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/HKI190637311.
Lute Sonata No. 19 in F Major: VI. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b4ac6ac4d70a0cc67e8c387aa63513af7a39988f4d249d8ccae88bb81063d. 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/HKI190637312.
Lute Sonata No. 34 in D Minor: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47289b541ac5d6f4e12250ebfd13aab563204de0f307785b89ecee9bc88438b. 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/HKI190637314.
Lute Sonata No. 34 in D Minor: IV. Bourree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f4000f3bda6f7a83fb176da156b205e635b9435232339f064c778ba4695726. 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/HKI190637317.
Lute Sonata No. 34 in D Minor: V. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca049c5bcf9393a1476f5479fb1abe0d2d8474238701f30cb37046e6bd5941f. 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/HKI190637318.
Weiss, S.L.: Lute Sonatas, Vol. 7 - Nos. 15, 48
Weiss, S.L.: Lute Sonatas, Vol. 6 - Nos. 7, 23, 45
Lute Sonata No. 45 in A Major: IV. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c67e161b8151c87661b3ad7284e851c610f874612aefbacf377935dafd0528. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI190345304.
Lute Sonata No. 45 in A Major: VI. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc938c30ea2306e0c7fd4b1515ad53aeff51c12ef081687c3fce162fc0179d071. 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/HKI190345306.
Lute Sonata No. 7 in C Minor: I. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde8b19cca702bafeb5a0f8ae0bda9c9d0ca4d12d3dd3db285d0d48117b4ae87. 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/HKI190345307.
Lute Sonata No. 23 in B-Flat Major: IV. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9015d063af58428134ac9e4e20e88a470e19c12c399f34d0c05ff3ac42dc57. 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/HKI190345316.
Lute Sonata No. 23 in B-Flat Major: VI. Saltarella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac77ea30166aac435d27e0dd5362e70b92b80bfd0a6761cadc9f57fa1fa4d15. 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/HKI190345318.
Weiss, S.L.: Lute Sonatas, Vol. 5 - Nos. 38, 43 / Tombeau Sur La Mort De M. Cajetan Baron D'Hartig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a6cc9290042ccdefa78218b95a43982ca1f90df682004aae8deb42f92d2696. 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/HKI190047701.
Lute Sonata No. 38 in C Major: Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9192782500b3fde65d000834e27d5093d54b237dde5b74ae0fc70738390cab. 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/HKI190047702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb2e5aad5a51e3b3811e10afcf756c1ace6eadc554510d1ab973d25f494fda7. 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/HKI190047703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ba8efa5a95ad44ad3f607651fb78aa953944652f320b48ebafce6c86dd4e8. 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/HKI190047706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00006e899cc13c6a5b8f8bbdc215a194f1c1453337494c50ce18e23eb765320c. 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/HKI190047710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f58ff0d6eb2051617157022f37b796572fa2e8eeda54787e0bbb9c999f39b6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI190047714.
Weiss, S.L.: Lute Sonatas, Vol. 4 - Nos. 21, 37, 46
Lute Sonata No. 46 in A Major: I. Ouverture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c019866be03c1bc2a232155ff6f296d77a7eeb2c24716d7be58e9d7022db65. 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/HKI190015701.
Lute Sonata No. 46 in A Major: II. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc588826eb3f56f5fa86f04f1189103b7660fd5a09255069081e45f1ef62143. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI190015702.
Lute Sonata No. 46 in A Major: III. Bourree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bd9289ae5f68b2aaf6e7fbac949d1a4a7bbc8756be9ff6db4ace8733b070e7. 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/HKI190015703.
Lute Sonata No. 46 in A Major: IV. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665ae080f9122b6b506d56015cd59ba7eed52c935992997dd643be5462236ca6. 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/HKI190015704.
Lute Sonata No. 46 in A Major: V. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b73c40fccc4400675f34868bea1742e88c95bafe24c0d26e0db6e7b1946c3a. 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/HKI190015705.
Lute Sonata No. 46 in A Major: VI. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7014865d0b204dce653e10c464ad49b42c17a1bbd31e10dfac19a5562e53f13c. 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/HKI190015706.
Lute Sonata No. 21 in F Minor: III. Bourree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31818947d8aac0e21527280508b68537ca788fe8a237310d6eef0343643d826d. 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/HKI190015709.
Lute Sonata No. 21 in F Minor: V. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f74fe31ac6b93431865aa70fba7c5266fb523923c4b8b243a1b6be97e4153f. 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/HKI190015711.
Lute Sonata No. 37 in C Major: II. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd58d443d4bda84fc3e30a9132594564d556e0f9ed15e776a37cd0e31d72fd1. 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/HKI190015714.
Lute Sonata No. 37 in C Major: III. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af03d95c0c7c020f000ec3c4d158dd2d154f1ed4023a5d9a03999851e549925. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/HKI190015715.
Lute Sonata No. 37 in C Major: V. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec49296c1db3f92f03075bb15fadfc74b2b1a024805aebbe836d20c6e244c2c. 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/HKI190015717.
Weiss, S.L.: Lute Sonatas, Vol. 3 - Nos. 2, 27, 35
Lute Sonata No. 2 in D Major: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b1634cff69137af4c5ae3527358982d2ab2a9628dbb9cc9df7b22f051bc646. 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/HKI199832901.
Lute Sonata No. 2 in D Major: III. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa550fd74a4011451498efdae20420cbca103c38e5d83ff79651a286776611ba4. 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/HKI199832903.
Lute Sonata No. 27 in C Minor: I. Allemande: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a3c29a98c0ee73989ccd99b6f05afd46fd122797eb2c2bb49aa6916681ca4a. 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/HKI199832908.
Lute Sonata No. 27 in C Minor: IV. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bf8e837a1751d2a75c018acd063f8810fe2b7937e627d284463001b1551de8. 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/HKI199832911.
Lute Sonata No. 35 in D Minor: V. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf7c3848dc19ac5bb6731f77d1c94d90c47d04dbe4b44d43dadad6a9ce69fd. 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/HKI199832918.
HAGEN: Lute Sonatas / Locatelli Variations
Lute Sonata in D Minor: III. Allegro moderato
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Weiss, S.L.: Lute Sonatas, Vol. 2 - Nos. 5, 25, 50
Weiss, S.L.: Lute Sonatas, Vol. 1 - Nos. 11, 42, 49
Lute Sonata No. 11 in D Minor: I. Fantasia
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Lute Sonata No. 11 in D Minor: II. Allemande
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Lute Sonata No. 11 in D Minor: III. Courante
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Lute Sonata No. 11 in D Minor: IV. Bourree
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Lute Sonata No. 11 in D Minor: V. Sarabande
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Lute Sonata No. 11 in D Minor: VI. Menuet
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Lute Sonata No. 11 in D Minor: VII. Giga
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Lute Sonata No. 49 in B-Flat Major: II. Courante
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Lute Sonata No. 49 in B-Flat Major: III. Bourree
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Lute Sonata No. 49 in B-Flat Major: IV. Sarabande: Grave
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Lute Sonata No. 49 in B-Flat Major: V. Menuet
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Lute Sonata No. 49 in B-Flat Major: VI. Presto
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Lute Sonata No. 42 in A Minor: I. Allemande: Largo
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Lute Sonata No. 42 in A Minor: II. Allegro
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Lute Sonata No. 42 in A Minor: III. Bourree: Posato
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Lute Sonata No. 42 in A Minor: V. Menuet
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Lute Sonata No. 42 in A Minor: VI. Giga: Presto
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The Essentials: Classical Guitar, Vol. 1
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