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 0xb71e8cd569e349ddff67851b9d3759b331b793c900b1b49ed88185607103f1b1. 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/ba097945-999d-4314-b48c-ceb1cfcdbd70.json and https://artists.proofprofile.net/proofs/artist/ba097945-999d-4314-b48c-ceb1cfcdbd70.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven: Orchestral Works (Live) [Remastered 2022]
Mendelssohn Bartholdy: Die Erste Walpurgisnacht / Infelice / Ouverture zum Marchen von der schonen Melusine
Die erste Walpurgisnacht, Op. 60: Ouverture: Der Ubergang zum Fruhling
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 0xb804a0ae60f125e1e2fe83f7396c9045bba6d959659bd7f1f95c830da6557d2e. 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/DES380005709.
Die erste Walpurgisnacht, Op. 60: Konnt ihr so verwegen handeln (Alto, Female Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa56fbd5dc881d96c808666b77480e4f27e81f2d8217f365400618254cbaf58. 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/DES380005711.
Die erste Walpurgisnacht, Op. 60: Wer Opfer heut' zu bringen scheut (Baritone, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e05277abd4f4631c2d33380ee8d3730717b0abe70905fa263252040afee303. 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/DES380005712.
Die erste Walpurgisnacht, Op. 60: So weit gebracht, dass wir bei Nacht (Baritone, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675fbcc22b75c39298d0f6b9143aed04c9de4483bb69d9d183e018d26317ed63. 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/DES380005716.
Die erste Walpurgisnacht, Op. 60: Die Flamme reinigt sich vom Rauch (Baritone, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dbdb1212ea8fe40eaadc76b5398d35d948858b6bd4c260cf1d940dbf60305f. 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/DES380005718.
Die erste Walpurgisnacht, Op. 60: Es lacht der Mai (Tenor, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1ceb4539e0cdde15b5de81004f1e2f3b4578690f1ce93fafba3907320780bd. 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/DES380005710.
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
Die erste Walpurgisnacht, Op. 60: Verteit euch, wack're Manner, hier (Male Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518a607815788272e4423e0707126acebedcf32a1efb26ac444d8dab533bcedf. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380005713.
Die erste Walpurgisnacht, Op. 60: "Kommt mit Zacken und mit Gabeln"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9e6dabcd81d61d2121cf2261ee26fee8d62f390571fd3f7ca966dfa90dadff. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DES380005715.
Die erste Walpurgisnacht, Op. 60: Hilf, ach hilf mir, Kriegsgeselle (Tenor, Male Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5153a8faf0811cd84d1940e83a02522aee1e0c1ffe4d889ac9a81777c068ff61. 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/DES380005717.
Beethoven: Missa solemnis, Op. 123 (Live)
J.S. Bach: The Great Choral Masterpieces
Euryanthe, Act I: No. 2. Romanze "Unter blüh'nden Mandelbäumen" (Adolar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb829f90d672f1c878f734336694390854459cd726ff1fc05c0160c2bc544d26. 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/NLY331305896.
Euryanthe, Act II: No. 10. Szene und Arie "Wo berg' ich mich?" - "Schweigt, glüh'nden Sehnens wilde Triebe" (Lysiart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4615a396e2033ca0be76e060fdd0f78303eb1258a32e048f04f4befe31d8fb. 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/NLY331305907.
Euryanthe, Act I: No. 1. Introduktion "Dem Frieden Heil!" (Chor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e75cac3438a7255ae7cd823ffd6466d64ca7016f4f31cb6594fe8aec4df21ff. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331305893.
Euryanthe, Act I: No. 4. Terzett mit Chor "Wohlan! Du kennst mein herrlich Eigentum" (Lysiart, Adolar, König, Männerchor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b2d4275840980dcd1fbab92cd846b399f63cfd082f5e17f91045e90a23f23. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331305898.
Euryanthe, Act III: No. 18. Jägerchor "Die Tale dampfen, die Höhen glüh'n" (Männerchor) - Rezitativ "O seht! Die Schlang' erlegt von starker Hand!" [König, Männerchor]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a302fada306b7dda02e534b46c2bb6960794d0aa821913591c3a2d2a8de1d3. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLY331305920.
Goldene Operette / Der Bettelstudent - Großer Querschnitt
Boris Godunow: Act IV - "Ein Diener Gottes - Geschwind, ruft meinen Sohn!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76de0daee37bb671fc2b29dc67b017232a4677d474a106ab81edcebbc4006663. 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/DES380005590.
Millöcker: Der Bettelstudent (Highlights)
Uwe Zimmermann: Levins Muhle (Opera) [Excerpts] [Kurz]
Goldene Operette / Der Zigeunerbaron & Der Vetter Aus Dingsda: Großer Querschni
Jacques Offenbach: Orpheus in der Unterwelt (QS)
Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": So ist das? So? - Ja, mein Coco!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db4de4e4acca6e0e6ebed5fbe5e5cce08a0b7cdb40e6ebaf7fd8493fbaa26ee. 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/DEUM70603589.
Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Als ich einst Prinz war in Arkadien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1b1762026e253b88baf61e20aec5c49d013ec8db04ecd873f9be47838ac63f. 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/DEUM70603596.
Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Jung wird man dabei!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a96f7b29badd8f42d40f794e9a03a4f87a780bb664179598c9d4a484a6f802. 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/DEUM70603599.
Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Und wieder geht ein Tag zu Ende - Die öffentliche Meinung bin ich - Ich bin die Frau Eurydike
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cce6859cc978b308b053982d1ee407a4a66f9c80009ad5e488ae1457e186cb. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEUM70603588.
Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Du Verräter, Attentäter - Ja, die öffentliche Meinung, die dein Treiben überwacht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cede08c5a71e782756bbc3429cbb8c5e5107df7fe8edefde9509547e6779919. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEUM70603590.
Orpheus in the Underworld (Orphée aux enfers) - arr. W. Neef as "Orpheus in der Unterwelt": Um die Alkmene zu verführen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bff5851db7e2ac4f262b2ea7d6acbfda3a08dd77c7183ac5bb9e211eebdf63. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/DEUM70603594.
Beethoven: Leonore (Urfassung 1805 der Oper "Fidelio")
Der Freischütz, J. 277, Act I: O diese Sonne - Das Wild in Fluren und Triften
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edfd07a1489ee18a3bfa3f27fb30f55c49aaa222f122afb243e5e08f98e1002. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF057330220.
Der Freischütz, J. 277, Act II: Milch des Mondes fiel aufs Kraut - Samiel! Samiel! Erschein! - Ha! Furchtbar gähnt der düstre Abgrund
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0bc602e3a5a0236a090f8598f195b13c9b15ad9fb7e508fe967eed2f40e350. 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/DEF057330211.
Haydn: Mass in B-Flat Major, Hob. XXII:10 "Heiligmesse": Gloria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4c6b74ab83b2a205b3baaf928263b61b019b8b90c5d68c2e60f404b25a7a5e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC8602049.
Les Contes d'Hoffmann / Act 4: "Belle nuit, ô nuit d'amour"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d517bfe1081f6714546c0fc680f81906c410cc63de4fadffd4c1c0d69464eed. 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/NLA508543642.
Der Freischütz, J. 277 / Act 3: "Was gleicht wohl auf Erden dem Jägervergnügen?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c736f769702e7daa5a2ac83677e33f80795059af26187da88f0d095b8f482a4. 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/NLA508802701.
Fidelio, Op. 72 / Act 1: "O welche Lust"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9461fb5a84203b2d9f8e6c809ea7b37a99262bce666aa10118cdfe0aa83ebaa1. 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/NLA508802704.
Peer Gynt, Op. 23 - Concert version by Kurt Masur & Friedhelm Eberle: "In the Hall of the Mountain King"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72f9345b18db3a3394ee83a9a6c913b5b1eab28ecac15d83291fa4535ae9b90. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/NLA508703016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428ba798b81af038217689bb560aecaaac575d13bc0fa4118b9acd2a9abaa8f5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLA508202303.
Fantasia in C Minor, Op. 80, "Choral Fantasy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb2f2c08d101bee54f7592fef6b8308721b2c8417253a85b50b6276b0deef84. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/US2TL0924004.