is a Japanese multinational manufacturer of industrial sewing machines and domestic sewing machines, as well as high-technology SMT (surface mount technology) assembly equipment and is headquartered
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 0x5ef1445b2b6389c13622417fc32019515dd478a82384b722e436601757ea3865. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c788c83f-8382-4424-ad87-ae0864ef9979.json and https://artists.proofprofile.net/proofs/artist/c788c83f-8382-4424-ad87-ae0864ef9979.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 0xd3741bc5d7e4a54c711baf46f90f711782b2e833f7b47d96f56e79f8032aa621. 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/HRA8C2500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbfbf8fe277c2ad43f0f74bde99fc69c7f1df39a1ee7d75aa1265ab166a3e6f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/HRA8C2500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc12f6bc7cd3181ff5c5921e1f5168cb48a1a45707acbc54101628155a930750. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:58Z), 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/HRA8C2500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda64477eccaf0cf3fd87373a96917d9da1bc8b36b849d7677ee93aa19f24b5a8. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:53:10Z), 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/HRA8C2500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1ee17d2350e1928caa210607e40c58d0fa144f5dc58f30bdc30dc78bbc90e4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/HRA8C2500074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8066043d3c9c39e53590aa133ddc36b9a010031a9a128e2488b5bb7f0c6c0396. 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/HRA8C2500177.