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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aa6a3b0c8692db7a876b6cd477518f34ca4156a7d77b07963385bc156aaaea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cc60769-6d67-41a2-9359-fd0b379c7995.json and https://artists.proofprofile.net/proofs/artist/6cc60769-6d67-41a2-9359-fd0b379c7995.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9774bc2a2193888a5c6ed6bb55ff309c698902d587a231ade8902bbd0fc0a0c3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEW951800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e7607315fe98727d84cb8404c7797db173fb7624b2a551b35b5b5c44b07578. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW952000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a161f46a7110ac9286941534673461c0ba8b67d741cb48fbace551bbd61fd47. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:41:15Z), 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/DEW952000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca798c7efcb67184b15ad8a576d9e5e5fd76efaf52d3a0aeaca4420d4e7d635e. 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/DEW952000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511f59a1611909c3814cecb922b491b8eb3a34bd66ec0ccd19e135783ef88e08. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DEW952000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b77d59dccf0a27960855b21e91d5f4cba90e2600752e79776c2c652d94dde26. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEW952000020.
Bye Bye and See You Soon (Goodbye Song for Kids)
Eine Klasse, das sind wir! (Das Grundschullied)
Klassik für Kids (zum Malen, Tanzen & Träumen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a799d6079a9f7956b93065fc570a1a0478fa0ffa699cf4904b6630ad698d2. 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/DEW952400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a21f31037a371382a908571116ac7e21c42d24298ac154f632f3d6cf1977e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:41:39Z), 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/DEW952300075.
Klassik für Kids (Zum Malen, Tanzen & Träumen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017e84a06d372e8194d505c9b40d67409eef9207321b02b5f82577dda52aaa29. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEW952200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6d5464d1f89ce23df69294178f2a1012ff7771a0cffbbae1c55015d3cd445b. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/DEW952100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0091d18aaaf3af33d4cc4cc304f942dfb3037aff61f47fd3420435efa0f77876. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:18:03Z), 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/DEW952200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4f6a40c8070d2f5e812b4a8d1ab767717ba50a88e939f64aeea7feed034358. 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/DEW952100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3304d544cfb408e8b1f255b736d64a7a712b37c4a35031b50a6c7b9be3955f4d. 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/DEW952100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b8071f703c4002e8f2a5b2d27e8b1c9ad3520206dd98448067d113fe75cc87. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:41:23Z), 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/DEW952300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bf8582443c5ca2b54fe1e6957d14420d1948134c1e4d1e0eed70de5de43ba8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:42Z), 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/DEW952300029.
Kleiner Weihnachtsstern (Der Lichtertanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f031e990b3577d21aed9590c5d163719a7c13889153ac201bdf7d496ceefdd. 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/DEW952500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644df0e0c87beeafe0609ad7bc9131ac520cae14b2f4ed0e280647daa5d74a6. 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/DEW952500007.
Trommeln macht Spaß! (Das Mitmach-Album)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475a123f9c17d470cc09e327f3f514bac39667e2c4c4dd44fc3517e626529ade. 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/DEW952500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a225135d9284eefaa1a994f210846ac3c130fb8b491097b8ba1b652341190. 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/DEW952500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae5aa36e530fd341ec8b5c6360d116a73e74d3d8d22186dc3d21a56e0fc2ab3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEW952500016.
Flohstarke Hits für Kita - Kids Vol.1 (Instrumentals)
Flohstarke Hits für Kita - Kids Vol.2 (Instrumentals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a71fd0a7bdacda257c4167feaaad18cc19c21ff79c45ab03849d49b6f5191a4. 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/DEW952500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a743bc87360c9d3358d4ddf7e0c08747ead2ce093b8b0773ed84799b5d2578. 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/DEW952500162.
Ich habe eine Laterne (Der Laternentanz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9527a0aee4f7b59c0581562479e638b749f13d3b84511eb369711df270e0e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEW952500164.