thumb|A Nuro P2 test car in San Francisco (2025) Nuro, Inc. is an American autonomous vehicle technology company based in Mountain View, California. Founded in 2016 by Jiajun Zhu and Dave Ferguson, Nu
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 0xac1bf7407a3e164440b401ab626e280041fde7a5176b9561db538c68fbb91642. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96521330-347c-47e7-9e54-9b315b99c747.json and https://artists.proofprofile.net/proofs/artist/96521330-347c-47e7-9e54-9b315b99c747.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 0xe19ca95e5a7cfdb1018aad901140423eb1c344f725094a6472cb3f196457c0a6. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZGLS2124880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1134e3cca3e5f331b8eb1fbd5db2bc7a64cb479b5901bba7e496375e8a1f3531. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:28:46Z), 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/QZHZ62142789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe196ac9b1189dad4a028dcb72dd2af148f4f50ae1ba9f2261ba1c4b2a5b6d242. 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/QZNJY2129298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97e7636d9d1347dd17e94e60ab5f075a40629c3fcbf9c0e8210b81640c191c5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/US7VG2273038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9dca5c79250e6d6360568207f98193f91cb4d3d199d908724bc418b357c97. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHZ52295859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928f65ee3dc6e0919ac7fd1b63ad6a29b6373f455e917a04b8fc32c84fabd082. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:20:36Z), 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/QZNJW2210625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ce7dfdae4b113f8d38501fab5463938d13dd1daf17bd7c972e31a487e9f03d. 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/QZNJY2258690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca13509aad411d2f04eeb768f0e148fc5dc32575494194f0239a8231d6c3943. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QMDA62234800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b9be1784505dadf840cd70d265c50421cab055a4cfa39b3b920987a257cac. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/US7VG2337327.