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 0xd3b7694594233dfac2befbb46a1c7734a80f760005a33c7036274ea72dd6bcce. 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/80bb4ba6-f26c-4bdf-a6a5-d927f47d80c7.json and https://artists.proofprofile.net/proofs/artist/80bb4ba6-f26c-4bdf-a6a5-d927f47d80c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Reise Ins Spielzeugland: Ein Musikalisches Märchen
D'Zyt isch da! Di schönschte Schwiizer Chinderlieder
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 0x15cdf44892c26ccfea20807970b7e0893ae38fb391e3e9b9ca5af7fd43044910. 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/CH7811712620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363b7f72a4577deef02034b6627ceb48ea3d981c24238d02875e7be88a704536. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7811712622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d3d2404ae0794d982f52414a56972afead257b64c7b5b7d5ee50bd19ddf6d1. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:10:23Z), 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/CH7811712623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb823eeda9392bb3f4cd71250f08ddb41d11078e63fff23c2fc5ccb75b3b01def. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH7811712624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753c32ba26b2a1f30e834a2c67969b5def6445394e0bb359901e3b56fa15c11f. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CH7811712626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac44fe2bb44f9a8671b0c77ba1d57d5520a0625559edbb0e36e725be3fdf8c. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CH7811712627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8d32e6c1da1f404a21a3d9fc1a7cc2bc4cf7bcc1349f2364542110fe9feade. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CH7811712629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724989d5d7cee6eccd2232d2afe4224108eb84475b6dcd242e5975b0b3e5d8a5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7811712630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3c3834c82f796dbf2a1abb2492105c9b0d0f1124d1d56cb28280a15b87a1f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH7811712631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ce9d086c9de208ff895910039bb31bb9533df4b8edef40c8a716042b0ac747. 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/CH7811712633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3f7a038320f40ff221f0972cc9065a1632014c8c342736ba29b6a43033595c. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/CH7811712634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9f34d6b00437643a82d5ce59d968f0bacf361988616b607f827774103885c2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH7811712635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd39de48627c2cc06b109181efefe5c990145dbe000c7b040c7ceb6b4e9c8dc. 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/CH7811712645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bd9c226061710522b02f09cec342b3fba31bbf2e68e3f8bcc21bd3659f0d04. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:51:32Z), 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/CH7811712648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72332166613b09411ad5d7ce28713a9a321a10a2c226f0348ee71dea02fd80bb. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:10:58Z), 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/CH7811712649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6059b3d885eee8c6eeb2d9e44168bbe63460c324fd31406a9a69b43cc24a319. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH7811712653.
Gute Nacht: Die schönsten Lieder für den Abend und die Nacht (Deutsche Fassung)
Good Night: 27 Sweetest Lullabies And Bedtime Songs
It's Christmas: The Most Beautiful Songs For Christmas Time
Es weihnachtet - Die schönsten Weihnachtslieder
Sing Song Kinderlieder 3 (Die schönsten deutschen Kinderlieder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbe1b8a88a1d9f7c01f6e7fd6dde4a4bfc7dc5e5621021e52e6bf6dbebb639e. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:58:06Z), 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/CHD492200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947b22e9ace44be31586a27d58a95dff933f2d6a36ebb18141af1c9dd3275bbd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CHD492301032.
Sing Song Kinderlieder 1 (Die schönsten Kinderlieder)
Sing Song Kinderlieder 2 (Die schönsten Kinderlieder)
Sing Song Kinderlieder 3 (Die schönsten Kinderlieder)
Rübis & Stübis (15 pfiffige Kinderlieder)
Guet Nacht (Die schönsten Schlaflieder - Schweizer Fassung)
Es Wienachtet - Weihnachtslieder für Kinder (Schweizer Fassung)
Sing Song Kinderlieder - Die schönsten deutschen Kinderlieder Vol. 5
Judihui (Die beliebteschte Chinderlieder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adf9974c3a497ea1fe2f282abd8145b4acdc5e0e019ff3dab24e8392f800e10. 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/CHD492200264.
Sing Song Kinderlieder 1 (Die schönsten deutschen Kinderlieder)
Sing Song Kinderlieder 2 (Die schönsten deutschen Kinderlieder)
I de Schwiiz (Kinder- und Volkslieder aus der Schweiz)