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 0xfc7c055205911ae965f8b2adf259d7d15d94c897dffb871a9f2ff6db81d88983. Chain 2 (Bitcoin): anchored in block 953681 (2026-06-14T19:31:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/645cd0b3-39ab-4a30-bc8a-6e8bf1a62c2b.json and https://artists.proofprofile.net/proofs/artist/645cd0b3-39ab-4a30-bc8a-6e8bf1a62c2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Polka-Hits :: Rosamunde + Schützenliesl + Anneliese
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 0xc1777627b1edc39ee39a4da3bb66b234e4d713b1d9be185f0f1b763d018b188f. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA980600110.
Super-Hits :: La Bostella + Eviva España + Schöne Maid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b2c2e7c31335228fcdaf0abdfe13d3624af01880ca65f8b6fe5e4f0e033335. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEA980600112.
Stimmung an Rhein und Mosel :: Oh, du wunderschöner deutscher Rhein + In Mainz am schönen Rhein + O Mosella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583858eb5222ca1e40b9155abb6ffe3488f2a810bbca24965b19d85eb01fdb9b. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEA980600113.
Sauflieder :: Wir versaufen unserer Oma ihr klein Häusche + Schnaps, das war sein letztes Wort + Flascherl Wein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a0aede4aa23e87d18beffd2b08ec9ed3935f7bc8eebdb7f5dd8b260bc0ccf5. 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/DEA980600114.
Marschlieder-Potpourri :: Wir machen durch bis morgen früh + Der treue Husar + Aber heut sind wir fidel + Humba Tätärä + Heidewitzka + Rucki Zucki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2585a1df8632fe41987fa9080ae6b23176b1e576924f883738bcc4631864953. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEA980600115.
Rheinländer-Potpourri :: Im Grunewald ist Holzauktion + Trink mer noch e Tröpfche + Heinerle + Bummelpetrus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3720cc91aef89f63871e01cefa14fa500656b11c3fa2dc87ef9c804cf7ce320. 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/DEA980600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf6dba10ed1e9fbae1186e6b2db7ccdb0ef3045557a7146febae336e9e5b13d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEA980600118.
Kirmeslieder II :: Oh du lieber Augustin + Sabinchen + Trink, trink, Brüderlein, trink + Ein Prosit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c813ac8704e82c22947f756009a3dc40cf06f202bcf59eb6449ad324d07178. 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/DEA980600119.
Soldatenlieder I :: Erika + Lore Lore + Schön blüh'n die Heckenrosen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c7db6365d2a9c8c02dbf79fba075b781af681bd5880e14914dbf5acd6e3eb4. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/DEA980600120.
Hafen-Party :: Am Golf von Biskaya + Schön ist die Liebe im Hafen + Hein spielt abends so schön auf dem Schifferklavier + Auf der Reeperbahn nachts um halb eins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a20865c2bb8a2e113ef329778af18c67b62c20cdfcbfaa6f64f5fc995565e3. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEA980600121.
Alte Soldatenlieder II :: Wenn die Soldaten + Westerwaldlied + Es wollt ein Mädchen früh aufstehn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b2ef6e40412e73e8b847ad000115b4c6ce95bef13f7a723a94258c60404dcb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEA980600122.
Kirmeslieder :: Lustig ist das Zigeunerleben + Du, du liegst mir im Herzen + Gehn wer mal rüber zum Schmidt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2780560b6c82e6b6fee948a8cd6ca5edfa0497572db5eca9d21c4ce7ae7592b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA980600123.
Bierlieder :: Es gibt kein Bier auf Hawaii + Der Mann am Klavier + Bier, Bier, Bier ist die Seele vom Klavier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85ff883e7dfee5587ea8f739cdeaf032e0f9674936647c7f1617b1bf68f23b7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DEA980600124.
Die grosse Stimmungspolonaise :: Das Wandern ist des Müllers Lust + Oh, Susanna + Alle Möpse beißen + Bier her, Bier her + ... + Muss i denn zum Städtele hinaus + Ein Prosit der Gemütlichkeit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861d391d334206afc71e1ded0272fd90615ea0a004250732a9f4bf94804d506. 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/DEA980600125.
Remmi Demmi Stimmung :: Jetzt geht die Party richtig los + Auf die Bäume ihr Affen + Blau blüht der Enzian + Una Paloma Blanca + Bolle Lied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b7230bc479f7f7d472260ca7efe60c38d392e0ac1a73b232c584cd7a33e97. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DEA980600126.
Jubel Trubel Heiterkeit :: Tiroler Hut + Die lustigen Holzhacker-Buam + Geh Alte schau mi net so deppert an + Die Rose vom Wörthersee + Es spielt der Harmonika-Hansl + Wozu ist die Straße da?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02270e38c8eeafcb2999d3321c410afcef92eb5763686b2548533ae9ad235cd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEA980600128.
Superstimmung :: Ja, mir sind mit nem Radel da + Adelheid + Blau blüht der Enzian
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd567c2dd5f6b9cc63982e903c48c52955720a3080192870069773bab26b567fe. 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/DEA980600129.
Bierzelt Walzer :: Die Tiroler sind lustig + Oh, du wunderschöner deutscher Rhein + Waldeslust + Da droben auf'm Berg + Freut euch des Lebens + ... + Keinen Tropfen im Becher mehr + Sah ein K
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d33959face7aa822106803b44013b034dcbd136a18bd38ddc7f0b09d0a69fe. 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/DEA980600130.
Ramba Zamba Stimmung I :: Ramba Zamba + Der Nippel + Die Männer sind alle Verbrecher + Warte, warte + Wenn du eine Schwiegermutter hast + Denn im Wald da sind die Räuber + Dass du mich liebst
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaaa00ae275cded7783ebc25acf65032e8d28373a263c5b6817d68832c7b162. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEA980600131.
Karneval am Rhein :: Oh, wie bist du schön + Am 30. Mai ist der Weltuntergang + Do lachste dich kapott + Hab'n Sie nicht 'ne Braut für mich + ... + Schau nicht auf die Uhr + Ist denn dein Her
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41abef39c072925dcda4cf71113ec989c65dd86155a09a8a4b93aff9296aca98. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA980600133.
Schunkelparty :: Auf der Reeperbahn + Wo die Nordseewellen + Schön ist die Liebe im Hafen + Hein spielt abends + Am Golf von Biskaya + Fahr mich in die Ferne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c537da34854662699b52ed4de302331927697b3a64fea001a9bd0a0fd3f321e. 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/DEA980600134.
Stimmung aus Amerika :: Hey, Ba-Ba-Re-Bop + Oh, when the Saints + Von den Blauen Bergen + Oh Susanna + My Bonnie + Glory Halleluja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1611afaf2fd2d979a52bd303057b1a2dae88267e20d4eac39ea5a77091614796. 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/DEA980600135.
Foxtrott Oldies :: a) Bel Ami + Wenn der weiße Flieder wieder blüht + Du hast so wunderschöne blaue Augen + So schön wie heut' / b) Auf der grünen Wiese + Lass mich heut' abend nicht allein +
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1607b0241f5f399e51c49dd9e49bfefbb06f6ee1586317a545e18619c8a054. 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/DEA980600136.
Jack White Hits II :: Heute hau'n wir auf die Pauke + Ich fang für euch den Sonnenschein + Ein Schlafsack und eine Gitarre + Fahrende Musikanten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01372f9c021b50fed79f83cb19e6f55b4158c8d7504dd5ec048b0cc66728f819. 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/DEA980600139.
Karneval in Rio :: Abanda + Kleine Senorita + Maria aus Bahia + Tschiou-Tschiou + El Cumbanchero + Marina + Am Zuckerhut + Adalita - Zwei Apfelsinen im Haar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe39a31f637e4d5bc6f86403cf7d4d700ca1761b8145800aab275eb9971f8ecd. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEA980600140.
Schlager der 60er, 70er & 80er. Musik für Unterwegs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067f9f47a240160d1762101dafbf02357c143f0018f204ff14e4f6e63cb714af. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USA560959406.
Die 75 besten Deutschen Schlager der 1970er Jahre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35b97aa53fc8f201260bc18420e491d70facb795eaf7534fcc4e15102e571a9. 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/USA371412593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc290d06f306adb4793f4b73e38a817ceef6e57adc5355cabd51a694bda60f5ef. 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/USA370995147.