The TRS-80 Micro Computer System (TRS-80, colloquially known as the "Trash-80", later renamed the TRS-80 Model I to distinguish it from its successors) is a desktop microcomputer developed by America
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 0x079e7a32eee79af521b16c357f15e25f97ee33d25cf5dd9cada1b32b28357ae0. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a47fc257-bddb-462a-bfe6-4ccd02f988fa.json and https://artists.proofprofile.net/proofs/artist/a47fc257-bddb-462a-bfe6-4ccd02f988fa.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 0xd6da0f55e90439d520e784e8a9b9b93d4529d1090722995cb6709a850fe2da5b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:02:41Z), 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/USTCD1025447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b4d5002f704c4ec4144ad49f949f18eca07ebd6945c872b8720ed2ad9c5ae2. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:10:32Z), 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/USTC30793698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb3cf0f6c9d0bfa1d30eee61659e54885c2b263c60fc710276667df36994ef6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAAW1190499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac4ee4dea7ea98292b2fc1d80cdf204d92d62e2934581446effcd286dda3d43. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE6A92175455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d47f1393c42668b6224129d3d6b5fe02497b99352ed30ff7fec167663935b4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:01:19Z), 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/TCAJY2553552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c2a1ff4438919a3d3b1115c6cbb2658db897b90ce0705c492248490bbd7fd8. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJT2545497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0dddb2f5adb7bfab1dcc80150450e5733bcca03b7dd589c4852ba822c9028. 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/DEU671900216.