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 0xee2607fbc512d74fe26881ce5610307bbaaf42cb910f02cb357e05acda22f9b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a9f13b33-6f3c-4e82-8118-8cc09f1aea8a.json and https://artists.proofprofile.net/proofs/artist/a9f13b33-6f3c-4e82-8118-8cc09f1aea8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Battlefield 1942 Theme (Original 2021 version)
Battlefield 1942 Theme (Original Vehicle IV)
Same Game Different Music (BF1942 Intro Recomposed for Nordic Games Conference)
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 0x650ecfed22e7f9dccf0a53cfad194216925946bbc0f44afef4e49a8ac6d7db41. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USLS52569501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69298c2f327677b88c738d11b66e55ef75c73c0bd045ce5416b85d1b6f3e1f17. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USLS52569522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a93a1d37443b91bfcbcbda9c921280be3a84c5de028f7747323c395ef14c7a8. 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/USLS52569523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e07ffcfa69259145e65361d15bd78c3452f191d3afdb4e092fe8cd5f9ba31. 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/SEWDL6018212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e07ffcfa69259145e65361d15bd78c3452f191d3afdb4e092fe8cd5f9ba31. 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/SEWDL6018212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e07ffcfa69259145e65361d15bd78c3452f191d3afdb4e092fe8cd5f9ba31. 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/SEWDL6018212.