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 0x9252734648eac2569edec96e5b2b0f33bbc103256e44dc3c66aa4bdca20d4de2. 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/4cf16a52-9855-4ebe-bda2-04dd98853b7b.json and https://artists.proofprofile.net/proofs/artist/4cf16a52-9855-4ebe-bda2-04dd98853b7b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Der freche Monstertruck (Speedy, das kleine Rennauto 5)
Track 1 - Der freche Monstertruck - Speedy, das kleine Rennauto 5
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 0x15991399d16a2b8a3a1890f520bf112e34f2082a94b4a1f28aa2d7073b8bcb8e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZU12188206 — a six-check JSON result.
Ein Spannendes Rennen (Speedy, das kleine Rennauto 1)
Der Schatz vom Schrottplatz (Speedy, das kleine Rennauto 3)
Mit Vollgas auf Klassenfahrt (Speedy, das kleine Rennauto 4)
Die geheime Mutprobe (Speedy, das kleine Rennauto 2)
Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Kapitel 1 & Kapitel 2.1 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2c4158d5dd87f3a636c59c1bc953903e25353260bb35f14a9e429a34f88da6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP81350960 — a six-check JSON result.
Kapitel 2.2 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08127ec88935f582c93b53b903d4c15adae4ca8e7386e35a9bef114bc6ad372c. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/DEVP81350961 — a six-check JSON result.
Kapitel 2.3 & Kapitel 3.1 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fbb69fa4c235121b39299355e8aec58b0ccbdec759c613bfccf57f945d95f1. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEVP81350962 — a six-check JSON result.
Kapitel 4.2 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf2ce644798472e0bfaa76652c8aa4a8fb0b1f1f1f366e173192708f0e8c031. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEVP81350964 — a six-check JSON result.
Kapitel 4.3 & Kapitel 5.1 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe435e262c93da55f5c792231ca64426da9e75c509589cea609345de2a422dffa. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DEVP81350965 — a six-check JSON result.
Kapitel 5.3 & Kapitel 6.1 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1208d2fa50a25a0373933b5a0b627a9c9ceaa2502dc5b6ea86145904e62f193d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEVP81350967 — a six-check JSON result.
Kapitel 6.2 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda7b79409f56a66c32d2276e2c8a25b18f81ff9ffef1579d84cbaaac5d54862. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP81350968 — a six-check JSON result.
Kapitel 6.3 & Kapitel 7.1 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaffd6d10860500983027ffbf1d65ac749d25cf533959027ae40e06d9c5a59dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP81350969 — a six-check JSON result.
Kapitel 7.3 & Kapitel 8.1 - Die Vampirschwestern black & pink. Halbvampire wider Willen [Band 1]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0df51dfa03fe0595faaad6c451cebf21736921f8225ffe06fd06ce3dee4e6c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEVP81350971 — a six-check JSON result.
Die Vampirschwestern black & pink. Halbvampire wider Willen
Die Vampirschwestern black & pink. Vollmondnacht mit Fledermaus
Die Vampirschwestern black & pink. Vollmondnacht mit Fledermaus [Band 2]
Die Vampirschwestern black & pink. Sturmfrei zur Geisterstunde [Band 3]
Kapitel 2.2 & Kapitel 3.1 - Die Vampirschwestern black & pink. Sturmfrei zur Geisterstunde [Band 3]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ff9cfe6eb29d3281a3f5c8ab685d7271f540eff524391ff551cdc2d7ce6543. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP81351004 — a six-check JSON result.
Die Vampirschwestern black & pink. Sturmfrei zur Geisterstunde
Die Vampirschwestern black & pink. Wolfsgeheul um Mitternacht [Band 4]
Kapitel 1 & Kapitel 2.1 - Die Vampirschwestern black & pink. Wolfsgeheul um Mitternacht [Band 4]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ecc815901b75a414a8a05f6c3fe7b57541c245137fee9ba75298ab0c3af3a9. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DEVP81351135 — a six-check JSON result.
Kapitel 2.2 & Kapitel 3.1 - Die Vampirschwestern black & pink. Wolfsgeheul um Mitternacht [Band 4]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a002d1a124c409de9d55fa5c7887c487e8632745f63d93899fc424955c26cda. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVP81351136 — a six-check JSON result.
Kapitel 3.2 - Die Vampirschwestern black & pink. Wolfsgeheul um Mitternacht [Band 4]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b170fadf65a8eefa767f7d56985247ba1d8b71ca1bf8c9a06107c386dc8355. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/DEVP81351137 — a six-check JSON result.
Die Vampirschwestern black & pink. Wolfsgeheul um Mitternacht
Die Vampirschwestern black & pink. Nachtflug mit Oma
Die Vampirschwestern black & pink. Nachtflug mit Oma [Band 5]
Die Vampirschwestern black & pink. Nachteulen im Museum
Die Vampirschwestern black & pink. Nachteulen im Museum [Band 6]