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 0x5e639e6d9e0a1e20bfa0c7907926d14ae9b9bf3c404300372c72634262f6f1b7. 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/f13fdee6-f0c1-496e-bc69-34114ff155cf.json and https://artists.proofprofile.net/proofs/artist/f13fdee6-f0c1-496e-bc69-34114ff155cf.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Anniversary Series, Vol. 14: The Most Beautiful Concert Highlights from Maulbronn Monastery, 2014-2017 (Live)
Anniversary Series, Vol. 10: The Most Beautiful Concert Highlights from Maulbronn Monastery, 2007-2008 (Live)
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 0xc7760129b7957aec04b87dc45547c118b6433f57a263268601c4894e6b2a54be. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1800078 — a six-check JSON result.
Anniversary Series, Vol. 9: The Most Beautiful Concert Highlights from Maulbronn Monastery, 2006 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad3a49c6b758213eb9189511a5d635dbe9e7750518a513f90c9db269ba47b4f. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1701561 — a six-check JSON result.
Verleih' uns Frieden gnädiglich, WoO 5, MWV A 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33c38e45bd3ce74f0fd1bf42684634927d06689b1f87254f27f5e6f91e9b97c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1701567 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0480e0308d446bd72feea4b8384926e84411bd7af23601806596a6a55c87152e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1701569 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2d2dfdf192b405567e8c205bea2850b671bf2ad9bc4d4834ba9a72fba287cc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1611424 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743157eb22cabd32087291d0197dfa99f7948064450e1242292efd7d39abdb5a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1611425 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ae19e34740ddfb03eead07a8e9dd31d4f65f46edf6045f8a82435abbac052b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1611426 — a six-check JSON result.
Brahms: Ein deutsches Requiem Op. 45 (A German Requiem Op. 45) (London Version)
Gounod: Missa Solemnis - Rossini: Stabat Mater
Mass in B Minor, BWV 232: Aria: Agnus Dei (Alto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff44a6e9c8d710494b4d7a403eb72ef1b73dfb09cbfff943c7dfd578c53e50d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1019928 — a six-check JSON result.
Elijah, Op. 70: Introduction: So wahr der Herr, der Gott Israels lebet (Elijah)
South West German Radio Symphony Orchestra, members
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a297368dec6e270a774f5545f4cd97c52a9f869e20072e11cdef0c8e27d5fc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169138 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354af14554473da46302ad72b1a24e66554404a487678d34325f75af953fbe26. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169140 — a six-check JSON result.
Elijah, Op. 70: No.1: Hilf, Herr! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb43e2d854eeb27278aea8b8ae1db44f80acfd71c30078a47f463ad0b875bcc4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169142 — a six-check JSON result.
Elijah, Op. 70: No. 2: Herr, höre unser Gebet! - Zion streckt ihre Hände aus (Chorus & Duet Soprano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818dbaa7fdc25ddea206aba6c10dae6337b41b335089e23cec3a5b9dbc9c17d7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169144 — a six-check JSON result.
Elijah, Op. 70: No. 3: Zerreisset eure Herzen, und nicht eure Kleider! (Recitative Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bebf2ff8df70e1dcff7482a7e67a6d5c163e639f90117d50977403d2c81843. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169146 — a six-check JSON result.
Elijah, Op. 70: No. 4: So ihr mich von ganzem Herzen suchet (Aria Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x145ed7f5496e2b1babda52b208a1c5ca1bb614700b9c7a8fd4059b8af80fdc27. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169148 — a six-check JSON result.
Elijah, Op. 70: No. 5: Aber der Herr sieht es nicht, er spottet unser! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b6cee3c78205bdc4f43751bac56f27c846183abdbf44dae73bf7b218d29938. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169150 — a six-check JSON result.
Elijah, Op. 70: No. 7: Denn er hat seinen Engeln befohlen über dir - Nun auch der Bach vertrocknet ist (Double Quartet & Recitative)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5547c1ae6a58976e1e9cee8a65f6746562202ae8021707c9213a454be1f8ac. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169154 — a six-check JSON result.
Elijah, Op. 70: No. 9: Wohl dem, der den Herrn fürchtet (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0561ed116863f27aebcf1284b434ea33545f590fbe801ce0e6a512202810caa2. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169158 — a six-check JSON result.
Elijah, Op. 70: No. 11: Baal, erhöre uns! (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53d0351e568f2fb7bcbd6c98ea2647405be65e21e676467a168db000cb5634b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169162 — a six-check JSON result.
Elijah, Op. 70: No. 12: Rufet lauter! - Baal, erhöre uns, wache auf! (Recitative & Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2a599cd550d32d48c60ef537391b26e4b39a71b794bd3dad66966d4d0dc4b3. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169164 — a six-check JSON result.
Elijah, Op. 70: No. 13: Rufet lauter! - Gib uns Antwort, Baal! (Recitative & Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeef1797f3a71e2d5da43a673f0cc89691d07dbaf66e7252447e53568805597c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169166 — a six-check JSON result.
Elijah, Op. 70: No. 14: Kommt her, alles Volk, kommt her zu mir - Herr, Gott Abrahams, Isaaks und Israels (Recitative & Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c485a80edd3520f4ebcec2335f493f98ceb41224d931ea12222422620277d7a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371169168 — a six-check JSON result.
Handel: Messiah, HWV 56 (Unedited version in English from 1748, performed according to the traditions of the time)
Messiah, HWV 56, Part I: No. 4 And The Glory Of The Lord Shall Be Revealed (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9ce28b4ca5265c27141ba0dbe193f49f60a361b8859ebd49d740d203e85d51. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371071020 — a six-check JSON result.
Messiah, HWV 56, Part II: Nos. 33-34 Lift Up Your Heads, O Ye Gates. Who Is This King Of Glory? - Unto Which Of The Angels Said (Chorus & Recitative Tenor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974df8ead1d6605cf6244164f3d7a0f9690a8647cb4dbdbccb7a8345770a1e88. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371071046 — a six-check JSON result.
Messiah, HWV 56, Part I: No. 10 For Behold, Darkness Shall Cover The Earth (Accompagnato Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a56dd2e804c447ad58cf3c301b596563843ad04a293062d80659276e1478b8f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371071025 — a six-check JSON result.
Handel: Samson (English Oratorio HWV 57, performed according to the traditions of the time)
Anniversary Series, Vol. 1: The Most Beautiful Concert Highlights from Maulbronn Monastery, 1998-1999 (Live)
Felix Mendelssohn: Six Anthems for Double Chorus, Op. 79
Anniversary Series, Vol. 13: The Most Beautiful Concert Highlights from Maulbronn Monastery, 2012-2013 (Live)
Anniversary Series, Vol. 12: The Most Beautiful Concert Highlights from Maulbronn Monastery, 2010-2011 (Live)
Anniversary Series, Vol. 11: The Most Beautiful Concert Highlights from Maulbronn Monastery, 2008-2009 (Live)
Solomon, HWV 67: Part III: Sinfonia, "Arrival of the Queen of Sheba"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3dd91463f4b8a9b4f21513d8e8e5a0f40e68c25fa2b4b5facac7b25354d432. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1020587 — a six-check JSON result.
Solomon, HWV 67: Part I: Your harps and cymbals sound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7ce863a190bdd4d6943a3b113238880e9b3e9f3f145dd681c54f30b7c9d6b7. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USB8U1020586 — a six-check JSON result.