thumb|More than 140 Soviet and Russian crewed Soyuz spacecraft (TMA version shown) have flown since 1967 and now support the International Space Station. A spacecraft is a vehicle that is designed to
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 0x47a116adea2707f1e9f1fcef895a0bb6d9a890fe407902106ceec3da6f410f85. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b8d999f-f8b0-42c9-a46b-787c46559616.json and https://artists.proofprofile.net/proofs/artist/4b8d999f-f8b0-42c9-a46b-787c46559616.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 0xb89ddf7cfbef3ba1a88ee862c80db9b29274a525bd8fd0ddde80004b195f1784. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USCGH0520204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa935da9d2c6d3e100e1652d8316253188b1447dc48866002c6039f48eeb7730. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USCGH0520214.
Kaleida Dreams (Original Soundtrack to Computer Animation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7503976e67692d0e1bd093cd345b6aed2407163d3e243737c4d8f5d13a1afb09. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USCGH0519081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a286e8c7fe650c3cd4f9107605f5a5876d19ba78d42b97b9d5ba6b2e9dea38. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH0519082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5a66abd4d1551338654f9b1aba5705639854a3c6881d006eab8b2816e39612. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/USCGH0519089.
The Planet Pluto 2015 Live at the OmegaLab