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 0x6e49fa5e3d7bb607edeb832016c8375ce8c1b1ec05aacb8dfebdaeac663e6d3a. 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/cae46283-817a-4861-befb-f350439b0070.json and https://artists.proofprofile.net/proofs/artist/cae46283-817a-4861-befb-f350439b0070.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 0xebd0625a915b97edaca2dfadbe391dab1be95dd1e4cd4ec2f65cb6b44932bb32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEZC62369329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d7ee24e677669e45fd3d78ed230b93cd65cecb377c776e30edfc5a27521586. 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/DEQ022373597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2980652bccd31f2be99c75bbe2410be0a4b3492a208a98181139df9e6291a250. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM72305163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2980652bccd31f2be99c75bbe2410be0a4b3492a208a98181139df9e6291a250. 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/DEUM72305163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d7ee24e677669e45fd3d78ed230b93cd65cecb377c776e30edfc5a27521586. 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/DEQ022373597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195ea3509307447cee69d39d5662815b192e8787f6abc4d90a5338065b8f9b8d. 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/FRX282280890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc4e8af008068ff05481e54623f2164ae3ce9098b58c0352585af0c77f5ec5c. 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/DEZ901800230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600c4e3edf05aec937b2fe8ceb084a58687cb761ab58fda625b70f9319cae7e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA062311896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaf1db75d0612ec5661a1dfb55e91c18f55151cff05708eb5cca000e56d9acb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DESA21300022.
Das Geht Ab - Wir feiern die ganze Nacht - HBz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbcdd464aa4536a131c360cfad51213b07d0bdf9492ef6e0020d73db4ac710c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEPI82302341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d09557f9b8454de450b8ca6ed1056c9fe1009cbad989c044713638d0d2f0ed. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEQ121423679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393b63bb2696a1689630476dccc1ac58b561063d1cd15cf9a8724d19a51c125e. 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/DEN061003552.
Das geht ab - Wir feiern die ganze Nacht - Atzen Musik Mix
Die Neue Hitparade - Die Schlager Party Der Megastars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1602a917e6090227fb75f1e0025432d1af24a1a2fd34c9b8c0d1ca9d6e26f79. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEN060801027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe487a473d3e1870277f6a3c8b79dfe42e8d174e3c6a1a03fc3390365b78737. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR96X2379399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3829bf3378803c1559f03470df0b61beb994ec91ae698d54a657309e8b9b9f6. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEUM71903586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ea7796ce9c63d419bc6a995f5ed2d646433af81e4d0f629ee0a553fa8fc0b. 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/DEUM72313429.