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 0x2244fa0ec8858a8601412b4f27e7277211db388e9eb11390a81e1c5c0a866261. 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/82518a54-2351-4e26-9149-818935f15064.json and https://artists.proofprofile.net/proofs/artist/82518a54-2351-4e26-9149-818935f15064.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 0x029d7758c75affeafdac5e53139c8c5a0a4c76c7a77162b27978dc2f384bfbd2. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DEF076504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf4b01716e27b7f4652eb958763cebd297917d5b5e5e189e4fab4661c76126a. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEKB72057426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd3ffeb55df004861fd3a44363e2b3637f1bebf6c33033877a9c7b6face5a9e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEKB72057417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecd61468c7609e996ae76f5c9de7d1b1c4a49854220cfc726586ee3f7bd3ca7. Chain 2 (Bitcoin): anchored in block 956775 (2026-07-05T10:41:06Z), 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/DEKB72057416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36312ff4df8173efe2abc6557e1269dcf8dd734388c1100a0f84b615a6a8a350. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEKB72057413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617b281bef939834ceac5c5a2f5a9087456cf20f1f74b725c9f2442516c24df. 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/DEN120408729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c602670121a855ebca3309eff6b1262ba9a14c247d3dcb2102d2d328b178d0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEF066319090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398cd5f49eca8691277ae6689545c46784ccf62c7722ffd234f0d5b3f6d34088. 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/DEF077004060.
Vintage Vocal Jazz / Swing No. 134 - EP: Vagabundenlied
Tschau Tschau Bambina - Die goldenen Fünfziger
Masterpieces presents Gerhard Wendland: Hits & Raritäten
C'est si bon - Die großen Erfolge, Vol. 1
Masterpieces presents Gerhard Wendland: 10 Greatest Hits
Masterpieces presents Gerhard Wendland: Geisterreiter / Bei uns in Laramie / Michigan-Melodie (3 Greatest Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51268b1589d3ac2dd8dee9851f8c3a60204e98c9efa19186c7ceb3504837b289. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEF706100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5934ffe31e1ef5f37e96e891947c53870bcfe39dcc2af4f23cc1d85e4b4fe054. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEF706200083.
Tanze mit mir in den Morgen – 50 große Erfolge
Gerhard Wendland - Golden Star Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19099096621192bc5fe59861edf02285d3077ade03ff0f789a5409b525ce0555. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZ921800928.
Tanze mit mir in den Morgen (Mitternachtstango)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f41e8ebe6706b0ca7b06dd541f64ef04baf9323d83a0b7a2eb7d030cc607a7c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEZ921800889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe360d7d3bc50b2e7deac5fe6b84c569726b2b0244e067c414e0cf5534c843415. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DETL61601173.
Wirtschaftswunder-Stars: Jambalaya – Gerhard Wendland (Remastered 2018)
Electrola… Das ist Musik! Gerhard Wendland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6253a37e86a76019bace0e961c26c9674d9774e1966b72556218d5d44c3cf9. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/DEF066310070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba77592f07c13b938ee4c5245c3cadfecd9b419e850788360177b571cecfccc. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/DEF065806550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65d085f60b044a2d6fc394e6039686c40ec1402cda9a8e7456136b7f4cab7a2. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEF065804580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfffcfe1d88f1b7b75007e37762631f0382606411a1fd5eddf1d8f38018f285. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEF076505980.
Tanze mit mir in den Morgen - Best of Gerhard Wendland
BIG BOX - Legendäre Original-Alben - Gerhard Wendland
Heimweh nach dir: Finale (Heimweh nach dir)
Wirtschaftswunder Kino 2: Bei dir war es immer so schön - Fanfaren der Ehe - Die Frauen des Herrn S. - Musik, Musik und nur Musik (Original Soundtracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604d0cac8831335a31b4075c5dc2b2b39a3bf6b8d82a83595e307a787065690a. 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/DEL112000272.
Die 40 schönsten Urlaubsschlager aller Zeiten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e2af160ac124553bd56488c06d09bf072dcb522cfe0b936b38057244cb9c0. 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/DEAD61800931.
Volksmusik Party Schlager (100 Partyschlager Klassiker der 50er & 60er)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd09f49682d37429662135ede9b4c246434574fc798b710d7f7e70e0aaefed01. 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/DEF161480476.