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 0x34aac0cfe3318db3a13efcfadb5924dd3b40b83f20a8739ee34e5a1e6e975409. 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/34ce1a77-231c-4e70-9504-3eaf5ce26621.json and https://artists.proofprofile.net/proofs/artist/34ce1a77-231c-4e70-9504-3eaf5ce26621.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heut Nacht steigt der Mond übers Dach - Kinder und Abendlieder
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 0x3c9ba1ee7e1b70a2e530351b3571ef6b4c384597aa23fb394f8665460b475105. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEF068711440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c46a263c8160d31884992aef735d07f8f937a33c5cc2c4d58a58a4fb816a7e8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/DEF068711450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c642c257a6ac59099626fe39dcc94b3941113760fe21baa65b13bbd4376c1e7. 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/DEF068711460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22796a405274e5d21fe90ec59c2971621d88ecd195abe5d2c7189d17b80bee58. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DEF068711480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac3e11e226b9527ca6cf0853c4c0c1629b346a87f6fd6ff61f903264266db9d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEF068711490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac3eb17937876a794c10a57f53f09b4aac0e54bac6422350d0e57cf9facd0c2. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF068711500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf1c2aaaae9003db29b7f5c807dcf91604a38c1520e7fc3d61a4449cfcd8667. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DEF068711510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e30ac7e1e7a476a2966dd5bbb597ff02fbd510f26f2fc86c3fd907a649dac96. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEF068711550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a60d09d34996b4f785f7d53f41d5f3476da0ee2b665c344c122cd78518d9a2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEF068711560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d3b26a42e74c94f6fbb6228249f3b105b36db73b6a33eb4c1f69bbee8af42. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEF068711570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecfdcc1393ecb2bfa93309146a7e7e68606aa60ef548107b43ca69c6d79876b. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/DEF068711580.
Das Wolkenboot - Neue Klangbilder und Meditationen für Kinder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14935c2e57297a41c5fcc8f91f9acffef921e152e4887e975660caab4523d74a. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/DEXO32260522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c387d1f988e2ec5112e1081b8973c162b5b4335b916aa41db465c77c38085c5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEXO12214880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4090b9800cc466ff657150d07184124ed80c9e2fbcc83e9325418e9fc648a90e. 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/DEXO12214881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdfc1f0e1e6da4805eb75f05a958016df79217c48641f40125452bb214bbb8a. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/DEXO12214882.
Sieben kleine Siebenschläfer - Zauberlieder und Traumgeschichten zum Entspannen und Einschlafen
Lieder aus der Stille - Klangbilder zum Träumen und Entspannen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01906a3ea3d68bbbfd58bbeca27696fb19879298911d361d6ff231269480ced. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/DEXO32243037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f88c6de06474bc291b053f94945ede6a33dd16f81c4d04a6a6addc775c96f73. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEXO32243038.
Sonne, Mond und Abendstern - Die schönsten Lieder zur guten Nacht für Kinder ab 2 Jahren
Finger spielen - Hände tanzen - Handspiellieder und Krabbelverse
Hol dir ein Gelb aus der Sonne - Meine schönsten Lieder
Sternenglanz und Tannenduft - Das große Weihnachtsalbum
Sieben kleine Siebenschläfer - Zauberlieder und Traumgeschichten zum Entspannen und Einschlafen (Remastered)
Wir entdecken Komponisten: Johann Sebastian Bach – Tastenritter und Klavierhusaren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6b7cefcfe3fc49d80ded7098b97d94b1ec868fb23337723f872fd0dff89da9. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEF058330907.
13. Gegen den Tastenritter und den Husaren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4dd84bc5e498f3bec23bcef99f1b2d6425b921f70d7b18a479278e12cd2233. 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/DEF058330913.