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 0xe7596e0c8d0c434aaa8d0f24671c9dd68ccfbe41dc3562e09398670c0c5351c1. 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/56e8230c-ad21-430e-97c9-9f332f1bc973.json and https://artists.proofprofile.net/proofs/artist/56e8230c-ad21-430e-97c9-9f332f1bc973.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tiefschwarze Schuld [Ein Corinna-Dupont-Thriller, Band 1 (Ungekürzt)]
Todesprüfung [Ein Corinna-Dupont-Thriller, Band 2 (ungekürzt)]
Das Todesflüstern der Raben [Jana Brinkhorst ermittelt, Fall 3 (Ungekürzt)]
Wir schweigen bis ins Grab [Jana Brinkhorst ermittelt, Fall 1 (Ungekürzt)]
Wenn Märchen sterben [Jana Brinkhorst ermittelt, Fall 2 (Ungekürzt)]
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 0x99c5e5020b73cc3f516072dbcf257fca18521f38bc11e2c86f0f5a69d4bab43a. 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/DEHC20963520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d6ca6265b5d940ec0d43dd681edf65c5b6a262c042e4da0850d13a7ff9474b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEHC20963521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa82181368e017ca272d3f53cf76cad52964abf7495dd0eec8f3b03f1ed82d9c. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEHC20963522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec9cf64dc129eeb102f0666a9aec1fc278eb3c12681e08f246e681697fd96aa. 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/DEHC20963523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022d95fc355d29d89ded134cee91f522cf7eeddc1234a8ac5b4978d953b151a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEHC20963524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a4344e380ec074e3aa4aea639d1f67d36a421008a5839997ec536661114422. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/DEHC20963525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0736b23be87a95b100b95c6a707d70ddd6fc2af558c1cdd96823115fe2691fb5. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEHC20963526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b3dcb886d9df6158136e01f549e993268ac856b1953d9ea27f38ede48bb66. 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/DEHC20963527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2440026e77fead7f63209e6c9bbcce13c7b41fa092a2f9a4fbf486aeae274b9d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHC20963528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4422d48d0f61da68a8e0aa8e765369214fee9e4d44de6e575cb1b9d96ae6232d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEHC20963529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fb21c1c6d8e93474794be59161742935e0dcdadb09c896efde19a540584da5. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEHC20963530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6a4cadae076dc71a554b8459c440df9984e40af9be74f9bc465cfbdac4e612. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEHC20963531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4630eafc66430f950b1ed210d44312c1c7ce7291ece3b29d8207dbff7bedd343. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEHC20963532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6017ccd49c4a4c927709bdd1981b6af580f0627a4e081371fc6aa0f41815593a. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/DEHC20963533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a153eea4a3c84e4abd400e9e106dd1b82c84245e524dcf302ae0e65e513844b. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/DEHC20963534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2838aaaeb5760b3aeef9b0b40f2e0b553ee084ae9a7a97d5efee206d478f297e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEHC20963535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a69c330ca617337ee000abd6f16939eea6314defbf7887d14a2275f3ee5052. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEHC20963536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced9c28cf2121eae87723a374ada69090d1cfda408309f34490a851b8d6fc027. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEHC20963537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38228fc1718972e79f867cb54b715865f19a1ce75da6817e6b26c8d027cf663b. 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/DEHC20963538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456108dc80b2f6802a00e054311574fad4073d3376db90166f92d4a862d4c6a0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEHC20963539.