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 0xae74d82d8dae1a7240122da17a2e93a4c8d4290000fa6a7b80c655dffde8a096. 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/fc59c0c2-c641-49b9-ac55-532b33b9d4f8.json and https://artists.proofprofile.net/proofs/artist/fc59c0c2-c641-49b9-ac55-532b33b9d4f8.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 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 0xef624c5419dec843df694f42cfdeec19350af00e0282fefb1276c2e9739c2808. 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/DEQ092000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39032adb14135aca858eb05c007e34beb3024aca49467fd4a6d15fb62ee5dc8. 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/DEQ092000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe855b0564ab53d09db47ca0683051dce50b4df43da38a5a3003926cc0647f6c8. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/DEQ092000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa845bc46a50917ed591b85ea44a372bf6a26e76b16f85aecbfe9a669c8dc6ddd. 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/DEQ092000055.
Du machst mich verwundbar (Firstline Audio DJ-Mix 2017)
Ich wünsch Dir die Hölle auf Erden 2017 (Oliver Will DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32a6d9fa21b43e4f9a83f462143420dd4a2cb538992096a658995d7dfad4238. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DELV42400573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d62dac71d70276cdd08eb1e82c4d736f760de34acdfdea1abcc3442db1c661. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DELV42400560.
Ich wünsch´ dir die Hölle auf Erden (wenn du heut´ gehst) - 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c01911639b62cc1d16b6ff723c63f10705afc9e191e18437b769b554be10f8. 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/DELV42400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d62dac71d70276cdd08eb1e82c4d736f760de34acdfdea1abcc3442db1c661. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELV42400560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aca12c6507893790301abd36016310c6d05a61ef38b5dc5a9a07ab706dba2cc. 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/DELV42400575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba4899b2776430c826872bf2bb74fc1d40e0aadcd9713908e8759c35dc91769. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DELV42400576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311e2ce406e9d419e73f7bee361ea97d90b6c81985cbddc7425b0dd4ead72594. 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/DELV42400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2d430c6e93c6e5c849c95c00338287960487ea21fa638c3a6454ae6d6695c7. 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/DELV42400578.
Wenn du gehst, stürzt nicht der Himmel ein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715cbaccdcf6b4d1665a6bf40071fed3fa4e752aa159e158c03451e43eee2919. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/DELV42400579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63843b5cb5330f70a019dd2660c5213ed7c751a1fce38a091b6fa8f37ba56ae. 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/DELV42400580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb81bcebf7c3654e62f69d18156b9236a3c69184789c11766977354852ff31d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DELV42400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c2755b4558003e3fd51af89d9d4f7c5135565c0debd06de0fb3b51af1e41b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DELV42400583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb878733ec496ed920ef81586f157582912cd8bd8760dd29ab383536fc95fa2c. 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/DELV42400585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9e1347e5e1bdbef7bd6e13f976018c9ae8adad5fb5d6219be41ad7925d2cd1. 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/DELV42400586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb27e8033daa0e638916159253cb574b7f9db0020f38863724ba8c03dce9407. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/DELV42400587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e985a6480dc3b9b0c83d4ab1624910dd15ce6e8ee684a27507a6977f8ed4824. 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/DELV42400589.
Erzähl mir keine Märchen (once&twice! Remix)
Erzähl mir keine Märchen - once&twice! Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd193e484281ed60a325e901966250516860510ee4ee8b8657cca0e8a292707c2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELV42500350.
Glücklich steht dir gut (once&twice! Remix)
Ich wünsch Dir die Hölle auf Erden 2017 - Techno-Buben Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8e82f493bbe1641789c08161a19083f03fe59d3d6f1a6005b7a94f53d1c6c9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEL561700301.