Four Star Mary is an alternative rock group formed in California in 1997. The band named themselves after the Four Star vs. Mary legal case, in which Mary attempted to sue US oil company ExxonMobil.
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 0x571f4e20f6ba4fb74616eef1327406f9da1abe7bd83514ab9cbfa40e707e5565. 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/33a330ff-ad34-408a-9b71-1437c3dc4d48.json and https://artists.proofprofile.net/proofs/artist/33a330ff-ad34-408a-9b71-1437c3dc4d48.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 0x7adcef632015bab5b0296f5ca65d239d9fa2d5908be9f6ff4e2f7558b8904a4c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:24:39Z), 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/USHM80518565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b4692de3d3e8b0e5542c027e2561e78b8653f373ed9baeb8c416eed5248384. 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/USHM80518567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747c11c9e421512a3a9b5ce14dd0e4a2262a8d82ce3e7504899c80e948c84182. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USHM80518568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232e6eaa20734aca9a8f991b437773d02f347856fab7db6e3b7c0d116dec2bd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM80518572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee55fff69c3d5674a7be0f298a2df8d2fd993371a34e7cd0b9f08f05044c828. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:02:53Z), 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/USHM80518573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ec39755100d7aa9909b3c369dfb4e7416b71e7c892c9f867f0c5439cce4ed3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USHM80518574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84dc2c4e4aac8dbba66fa31653c6ab024426052d140ed98e98b6c743a5e8638b. 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/GBHQK1500246.