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 0x9fee1c6ef7d3975b59f130d539b097ba8f8b396d3910316d5344723a6812821c. 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/b6af2638-f679-4eb9-8baf-aaf0d6d583e6.json and https://artists.proofprofile.net/proofs/artist/b6af2638-f679-4eb9-8baf-aaf0d6d583e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Junge [Die Kinder-Reihe, Band 1 (Ungekürzt)]
Das Mädchen [Die Kinder-Reihe, Band 2 (Ungekürzt)]
Die Sünderin [Komm, kleines Mädchen ... (Ungekürzt)]
Die Mutter [Mommy liebt dich über alles ... (Ungekürzt)]
Das Haus meiner Schwester, Band (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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba865f3acb850efd2697f2bba89c4d420a15e214463a0c6ba0229bafee83d88. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:09Z), 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/DEUE12528557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991a2894f8bd0deccf844f0de0aa2ef6e5fb49e2966c8ecbb5a35355cc96de8e. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:51:26Z), 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/DEUE12528558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49f29a402aca8547650da10c50c5f4f95cbee739cf5e7dbbc4b7fb5cda7fadb. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:11:24Z), 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/DEUE12528559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73021a8d98fef03c0b68939f9f542018077ba8cdfdf042c1dc8b2e121a39d6d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEUE12528560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629d0dadef05a68037d259772ee38fee1e529fe25bd75cbaa6480ba1a384a3d4. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/DEUE12528561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76dcd00828eba6e390ab995c2d64e9537e049145233c089ee6cd0356ea2beaf0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:17Z), 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/DEUE12528562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5d3d14b48bceebdf504c561ed3c1582873aa72d96f1e83396fc038f0283e88. 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/DEUE12528563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6b70e6615a295f0ec87063529ac9f7cb69eee3718e16e3b0836519a9dd5c17. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:49:54Z), 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/DEUE12528564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdf9f2a2eb74fdd182cfbb99eec5cbf779c2eb4ef72be26c24f04ce5ac70cda. 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/DEUE12528565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a41f6f14679d5421e00953d2b264e2c14d2df5b335ee3c78bbff22f9ba90a84. 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/DEUE12528566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5c42953785c0206dee3474facce1dd18accd7889c9f215392a41e0ed1e33b9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEUE12528567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4769359b5a73654b8c504adacfa9e27bec5381ba3b58881854a352c4a9802dc5. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEUE12528568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338d4716dc307e2fba87a198e58ed0522ed196a2fa244c33427fc3e023364c9c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEUE12528569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae72e934904d83a52980dbf9a9735e718d25a1876b168179a3b17c717849935. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:39:39Z), 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/DEUE12528570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f1b76258fb5818feac8ff4e9b29e870e6426c752eeae82bc602d393695bb64. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:53:40Z), 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/DEUE12528571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0079000ee64a0da2d4460596ea0669a75c8d2c81c7014599a70e3a4ae3e25b. 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/DEUE12528572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbefe242c28b3ce29cf5be619a83fcecb6a0a10f6da1a032ebe6302dc55041a6. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/DEUE12528573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a557cb54b1e902d29b760637f8f11ba7f7ec4114fb262da7c4dbecef1e0520. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:52:04Z), 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/DEUE12528574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b2da473062b72daee31f6685c5ecdddd5ef14b33b0a7f4eac81b91012b72b7. 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/DEUE12528575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ba79eb0d1047270d5b9136f536df13ef5c251c33574634342ff2d9389ad057. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEUE12528578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77720c45d46961a56effa6012d907d6fb8c1320f55afe77eb4e6df66b25f7695. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:11:03Z), 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/DEUE12528580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c3720d4dc68df614f88a61afb1cbce6725610124adbf0c4ff8a5665f09735c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEUE12528589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77151cf8d550bc6bd7480e2d1142e6f37dbff856876069f7c3e5f23c7e5802a2. 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/DEUE12528618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb125de178232fe26af2b8f93512fbe23472edb6f898903a6000592fccbd4ebe8. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:38:58Z), 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/DEUE12528635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac60111e95ef64aa77065ac622f29a29c3c57e6e2c584f861f17becbb195ae4. 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/DEUE12528701.