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 0x1f8a2954e084d3898cc109475b185867508b4ffe2cbcc7f4f1e8aa3a6ff40742. 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/7ea23208-a284-4da8-89b1-e6259bda712a.json and https://artists.proofprofile.net/proofs/artist/7ea23208-a284-4da8-89b1-e6259bda712a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wir lernen das Alphabet - Das Abc Lied für Kinder
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 0x2756b682894922734f61aea97f22bc9f6cd5668736e26a99f8ad00420da553fb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DELJ82005391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9928b9562ad496018e8822302b010bf0e2d410699906a877c54acd540ca13bdd. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/DELJ82005392.
Kinder lernen Monate, Wochentage, Einmaleins und die Zahlen von 1 bis 100
Meeresrauschen für Kinder zum Einschlafen, Aufwachen und Entspannen
Duschgeräusche für Babys und Kinder zum Einschlafen, Aufwachen und Entspannen
Dunstabzugshaube zum Einschlafen für Babys und Kinder
Dunstabzugshaube zum Einschlafen für Babys als Dauerschleife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e41781d1264cf21a7cd4e69d97a32e1462776d7834fb02a56e49f1f9acb051a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEZC62045144.
Dunstabzugshaube Einschlafhilfe als Endlosschleife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97de538070e968bc39b6bed8af1f4f74beedf1e410f4fcfa4b6d7ab28d2133e7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/DEZC62045147.
Dunstabzugshaube zum Einschlafen für Babys als Endlosschleife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa917bb3dfe5447e73180323593785e5347940eb9d81b12a8619e5b78cdb4c8. 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/DEZC62045148.
Weißes Rauschen zum Einschlafen für Babys und Kinder
Weißes Rauschen zum Einschlafen für Babys als Dauerschleife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2145e50cec031b5a2a49d01fc9325e95764ba7f2dd21f3beb4dc7a1817ebf068. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/DEZC62156239.
Weißes Rauschen zur Beruhigung als Dauerschleife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec44de7c7f141cb8ff6faa7a9bbeb4e26bb820ec940f89854abfac3dba8a1c53. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/DEZC62156240.
Baby Einschlafhilfe tropfender Wasserhahn
Staubsaugergeräusche zum Einschlafen und Entspannen
Staubsaugergeräusch zum Einschlafen und Entspannen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3ea35ca295c8a543a23c9d9666693ee6b6ffd45613f09eaaa5dd8efbac5f06. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEZC62335140.
Wasserkocher Geräusche zum Einschlafen und Entspannen für Babys und Kinder
Geschirrspülmaschinen Geräusche zum Einschlafen und Entspannen für Babys und Kinder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00739d15520c27e930c37799506c8773bfdbd035c442d40743a3e9702d744a0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEZC62348133.
Spülmaschine Dauerschleife - Lange Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bf7cfd5a99766c3b2e9ab92d7ef7a9597e1801f57f872fa2e09ceb7d7c6559. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:06:04Z), 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/DEZC62348136.
Waldgeräusche mit Bachgeplätscher und Vogelgesang zum Einschlafen und Entspannen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7efc454baefdd322a1f39aff97e4f1c9311dfd296b65bbd897b466d4002951c. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62376864.
Plätschernder Bach und singende Vögel zur Beruhigung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8094d2b1792d759ed99516db9024e0392f5e228ea0e8dfd9087f50e8bf09386. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEZC62376870.