Kalypso Media Group is a German video game developer and publisher. Founded in 2006 in Worms, the group comprises four companies in Germany, the United Kingdom and the United States and has studios, i
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 0x264ba2c90420610aa6cf472fc676556317bbbeffe8275cb24212641d063c69f9. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e732172e-a960-4e74-92d2-69075cca0bfc.json and https://artists.proofprofile.net/proofs/artist/e732172e-a960-4e74-92d2-69075cca0bfc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tropico 6, Vol. 3 (Original Game Soundtrack)
Tropico 6, Vol. 2 (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 0x2d5335fe2f1d27c077dfed62702409aa4cff250b41b8d4b1f3ab8fe5000973c6. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZTBE2448921.
Tropico 6, Vol. 1 (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994fffa180b36fe558081e84daa202461e4991251f2ce7a6cf0f1bc7965af3e9. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZRP52496316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c703ed93fa2c80290bfcce42312c8018b91f2e95cd4c1ed3652dced40095163. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZRP52496317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f6d5309634560179e1354a9af10b5b15787ba297e55f80afb4ebabaa22830. 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/QZRP52496322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0449954a11e6747b793cd9771e692c99fd1b0e687127f7d59e7f1b0da16614. 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/QZRP52496328.
Railway Empire, Vol. 1 (Original Game Soundtrack)
Sudden Strike 4 (Original Game Soundtrack)
Railway Empire, Vol. 3 (Original Game Soundtrack)
Immortal Realms: Vampire Wars (Original Game Soundtrack)
Port Royale 4 (Original Game Soundtrack)
Disciples: Liberation (Original Game Soundtrack)
Matchpoint Tennis Championships (Original Game Soundtrack)
The Inquisitor (Original Game Soundtrack)
Railway Empire, Vol. 2 (Original Game Soundtrack)