Paradox Interactive AB is a video game publisher based in Stockholm, Sweden. The company started out as the video game division of Target Games and then Paradox Entertainment (now Cabinet Entertainmen
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 0xa5d9418bd4953d9e87403d37c95c265e55d05f9004296f1c733c2b4328342376. 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/7c153762-668f-484c-89bb-31f877503322.json and https://artists.proofprofile.net/proofs/artist/7c153762-668f-484c-89bb-31f877503322.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Battletech: Urban Warfare (Original Game Soundtrack)
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 0x703521f04a61def4ff88053efd720836474f1027e0d2652490b700c9b68b62bd. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKPL1954023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920e9a306f5710a0fc34a7b1593a05155f49944cd827ee6906e7d17a4c5fb211. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKPL1954024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0de8a33a33db2a2214cc4d44b45ec4449c0d5147ff196282413f69a6fcec76e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKPL1954022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8643c07a18a834a837a0e424b6f6b0e94c7c85c87494a9d2d27f7d9ea565a8e6. 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/SEYOK1822536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ead7f28963a79e0c19ee4f7e976d149b98a5d5b9b0080eba64b1a4e9aa4a933. 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/SEYOK1822537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1e4276235f789e35826001fdeea7eeb39695ae5b19ef66ab7d9aa6fe284b5b. 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/SEYOK1822538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62be7d6963b89954ec7671f981e799492a3847a91092f34ca639b615e5e53593. 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/SEYOK1822539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3c5f316f8697d44bf97b45b8d4cc2e8bf3df817219e9d207162c0f3e6140f9. 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/SEYOK1822540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a187406f52b25af357551a2cb04a55475687f1c8e458ce068a958be604d9b7. 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/SEYOK1822541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82f6dc03c535f2402c8fc8bac3e5691c2369768211b23eaf7476edc6676e32c. 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/SEYOK1822542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804ff00557f636f4038a09335cc30dce60dfc229abf1715c8fc9f02ae6690be0. 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/SEYOK1822543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b52aa18cdeab8901668c0efa0260834a761e2cfeea754ca99ecaa35becfc00. 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/SEYOK1822544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d14a2eca38cba08035511a7ef19af3a9b731023cd34fa0f62e946d8d63531d. 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/SEYOK1822545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755586c008b26067653a679e2af316d10a7e44e79716de73e29a0843c1e8cbf4. 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/SEYOK1822546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf5dab873ea60d8e0442eed00fdf976bce6e23be8e6cf69611752cd0e0b8d38. 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/SEYOK1822547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80041a39060e285af29bebd26ef6e8167afc6cabdf9cb61376828a210761c179. 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/SEYOK1822548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c45c8737a2e505e4e2dd7ec6a583d54767df76dd83fa1115dfea6948f2b237. 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/SEYOK1822549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed053a43f3df398c3a5d8c8c82514f6c2d6f4bf67bbfdea106635ed8368403f6. 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/SEYOK1822550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed639082abca14bb0c4f03da1b940cb1c044bba4da01158602b1eaabeb20adc6. 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/SEYOK1822551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bbda0127a4cd35cf2ee262002ca391fc0b66b2985c2e00bead2f8c481f914a. 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/SEYOK1822552.