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 0xe0d763eee786223318f1790529fad2f25816fbc0ae52de52b63904dc85c56b78. 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/dc352314-38f2-4af8-8746-a1c1886a63bf.json and https://artists.proofprofile.net/proofs/artist/dc352314-38f2-4af8-8746-a1c1886a63bf.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 0x3a8e01a0fed0fec0fdc88a6b01259a41e19a2e66ba3de0b8b8cff7da7c175215. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0610200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff17e75f33a2346e9c5783dd9fe2718d3ccf7f937b855bf21e1eac83de048693. 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/CH0610200000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfb7d34727c568dfd18783c2815732df3e2eef1610b5e6bbcdaed1e1a142229. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CH0610200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2441772a61ed7b7f53c3ad3bd894fb4e91989fc861243e1020c8d28a4b235487. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e728b79eb989f75faab10b2b297e4e5b5d43642026dc678983beaf685d1f7c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179447c7c47fd9443b0a43ba7b491133b7853c82b7f9fd29481c0bcfe161d07. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH0610000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322738d3d1e9820433516f954cfdef51763ed89879603e744948ff3c34d8de23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH0610000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65afb945c115adc3c54a2c9533a89fd55e2e1b05d29eac22ec541d081eec46f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2441772a61ed7b7f53c3ad3bd894fb4e91989fc861243e1020c8d28a4b235487. 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/CH0610000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e728b79eb989f75faab10b2b297e4e5b5d43642026dc678983beaf685d1f7c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0610000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179447c7c47fd9443b0a43ba7b491133b7853c82b7f9fd29481c0bcfe161d07. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH0610000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322738d3d1e9820433516f954cfdef51763ed89879603e744948ff3c34d8de23. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH0610000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fbbf5fece5fa2b60a51615eb398a88220d0641d23601cd90765d07a83a58d3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f1ec4794ed044e83ff00054a0b393301d3d27e0825a3f64650eb718397a7d9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH0610000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a62e575178270c96bde5ddee3145c17a9a17fe8b32f84e7af907f535608326. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH0610000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06493d64b09cf7c5409451ca2ce80865d607e46fb720696cd591134e15de63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd096b23d3fe786d1a2f044e657b672c6615cef842a6465e12a57fde35ad8a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0610000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe987436a55d92cd679f94f2c2cb8134e90e5561c5be328191aadda33f516a314. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000013.
Update '99 (Repack inkl. Single "Titelgschicht")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b547b0f436a0f6597fd2b22976b41ef700fa37d553babd146ed130c53ae16a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH0619900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c25f034467687a750964b1e078cf6e161d78cc86b7eba4a0f6dfee2707265e6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH0619900096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6827764d4007c6768cf21b654e4d8368d95c9e0d4b29af752f1053f38e245639. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH0619900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b9abb492a80efd506f0c96a365ccb1cd31650a0fdcd8acd2ca676d6da496b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0619700000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d7bdd0796a06dbc418fac65cf61b61d1e29c0c5e15f24709f002fa46a012a3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH0619700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650507306d7a7d521d05c7c993a51f6fb1b6c9bf4d9dcc4ac6f55ec1741b4aac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0619700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b442d579d75f1e816f877cb6006a2f9861b4cb4fded30f02e174ee7bb0d98c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/CH0610000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634f541ffc6aaf9a44d86e4b30b58df44bfe83e6de1944048cb8206814762300. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH0619900095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817ed765865e984cc5a5bafcef6b94935a78dd86779a0278fa6b411ca52c3896. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CH0609900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf7226d204a76979a88f16d6703a2e67ad81865f120d5b694149e6ae4079ff3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH0609900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13571db4d1428ab8683e1fc0e4f41de0074343ba4133e6706b8189740832e46a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CH0609900066.