thumb|upright|Stevia Mountain with the ruins of Wolkenstein castle - the ancestral castle of the Wolkenstein family Oswald von Wolkenstein (1376 or 1377 in Pfalzen – August 2, 1445, in Meran) was a po
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 0xc8137a8aff489fb3b476bc315e299b839168df86b14a6c6154ac05fb0fea8189. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/307609c8-9884-4c95-a9e8-6cc65204c321.json and https://artists.proofprofile.net/proofs/artist/307609c8-9884-4c95-a9e8-6cc65204c321.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 0x3d1fdcc84e10eaa0cdf041fe617c2298b914a69df0909c10e4678a8198dff360. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEB908800402.
Hasse, J.A.: Mass in D Minor / Te Deum in G Major / Regina Coeli in D Major
Knightly Passions: The Songs of Oswald von Wolkenstein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfea3a6abaa6507c39ee94b3b30f4c7f3c6de7ae0719326329725928f2844a3. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBF079443401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e26b98cb7e52cb02eebbf95a6975795b2c077a3e6548c5478b645033a590994. 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/FRZ140914010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e16ba3659d10d4b5be9fbf1ec21f3b3c0060afb391fcf70de9491d41efb0a60. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRZ140914020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff991515ea41d70f993702c04f61088c2d948f14554636dcf6822f27044ae454. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FRZ140914030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de7380e0a01555ae7034e7ae64973169bd122aa1b21e41347aa69e4cbf0263f. 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/FRZ140914040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b87da3a66337c60a8e0db4da42ade5c797418871262ebba4d3485b72f50ff. 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/FRZ140914050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc2f66d159a5c6f4237111f76943be03371641c7b45e0ddc7df6c6d850de0c1. 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/FRZ140914060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f59983d3ae13d365a35061582bc191c9dadf75993930cd855e345d43241c0. 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/FRZ140914070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89944dcdde86649c97a8e1195d21e21ede77566852aae2159af03deb4703cf67. 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/FRZ140914080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa495289cd3234f059d72b51a96964bd570bcba0c4c3d5ef7119847d58e14e1bd. 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/FRZ140914090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aec1f76e1f5a64ce9aced4b9ae8c2e509331850de2f44d03fe04ff61245e4f4. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/FRZ140914100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cdf204d60afaaa3159a3b1ea4f77be65c1fccbf4739401b1f366451be9bb67. 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/FRZ140914110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce3dea38d9d636a3e97959e5fc1505e663eb6cdc8ce7c5cd6e40f579f6c2f6d. 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/FRZ140914120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0397f057d8560dbd29e62bb24e5700e8f33f19e3ce9957c91ced73d3fb1801. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRZ140914130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6acf2f11ede2b220ce52f8bea65779833beedd71b5bba25c58c928e7bda559c. 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/FRZ140914140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8221975d46e89a21c8684a1de5a579dff9a03f9413a97602b419e83610d62db3. 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/FRZ140914150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae70ce87e0dc7ba73c7c40cffde67f5567dcd93b35444ccc2207fe23ed7f179. 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/FRZ140914170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245e8ebd0a4ebafcc96b81c8cee791ec87ead61cd7cce68343cfa4369efa86a6. 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/FRZ140914200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbc5845f1e4b63f43add3b77dc89a5f2b31f190fdb1b1c32e70d96d12d7d9fb. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/FRZ140914210.
The Cosmopolitan: Songs by Oswald von Wolkenstein
Do fraig Amors (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8f8dd2393819488197f06f64cfddbce93ad7bc971026e1d524a8052c5ad11b. 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/DEB901400301.
Stampanie (arr. B. Romain for chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dea064a1cff9b9e77ec690b49d4f21af63cebcf521a08abce79e77bb8c44a9. 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/DEB901400302.
Freu dich, du weltlich creatur (arr. M. Lewon for chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4c66d230a28a6f7eb639d33ec3e7915384ae337b86c40284368d20b1ccad71. 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/DEB901400303.
Durch aubenteuer tal und perg (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf038ff4273370e25781017adfd143f1b7a4d39fd9f3fc85b9e5659080a9ca12. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEB901400304.
Gar wunniklich hat si mein herz besessen (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5ec5b878923fd26d685a1aa1373d9c7aec99d3a25e787ce5fdad81250d7468. 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/DEB901400305.
Es seusst dort her von orient (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5c24ef1abf3df3d6aae650a7b8db3e2ca8bfdbb19572d0a8ab5609d70a1007. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEB901400306.
Ach, senliches leiden (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4541d9eae39565d98cc3f56adaf8f5762572327fc64bc5a925c57374fe97aa52. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DEB901400307.
Wes mich mein bül ie hat erfreut (arr. M. Lewon for chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16758e3a91d99d683d3cc45cbdcf2ed873b7c7cbe048c72fddf304d66ee11e71. 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/DEB901400308.
Wol auff, wir wellen slauffen (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38039f3d1f4b7f217d7d1256f84daf58e565df7e63b1d94a16eeecdc265ed3b0. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEB901400309.
Ain gut geboren edel man (arr. M. Lewon for chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9115cd6cf2bd97ad6ddfce630c4eeb6febefc9c790bb381ef6f57b1bc4185506. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEB901400310.
Nu rue mit sorgen (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd2c2325b05961b4fd4db9f19aa523d748fa31f6ecbd30fead47fb9a07a6d94. 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/DEB901400311.
Wer ist, die da durchleuchtet (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fd270e569a30d1de168e913091aaad037be940025bb478f5c9b3c62bfe91be. 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/DEB901400312.
Mit gunstlichem herzen (arr. M. Lewon for vocal ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25561d90b8b80149f4a6ffafbc5c6f1e57f63904be43b6dadbd81d4c0157ded4. 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/DEB901400314.
Wol auff, wir wellen slauffen - Bog dep' mi was dustu da (arr. M. Lewon for chamber ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7ae6773aa12e56d10390972fc8479474f48587e434611eb3696e6fc8c796c3. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEB901400316.
Vocal Music (German Courtly Song) - Neidhart Von Reuental / Monch Von Salzburg / Oswald Von Wolkenstein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862e9f7764791b86fa5887ea604ed9578adc5ad35e799097a2bf41fefd9a12dc. 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/DEB900400716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baa0e79c7de91a60678e9e38ffe53fe1e9fcc8dd8e11cdbb161604dbdb2f53f. 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/DEB900400718.
Skak - Frolich geschrai so well wir machen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ffec0e795cd8def657c86ead5084df38f52ad4a5803cb865ca93369b4f09711. 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/HKI191403505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633e75b293fb82541b7d997bcac30291722384cc058edd66503631af6d66060. 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/HKI191403512.