thumb|Solar Zero Yen house thumb|Solar zero yen house drawing thumb|200px|'Beautiful town' is a Japanese artist and architect who was born in Kumamoto. He graduated from Waseda University's departme
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 0x1aba8c02d997289e88cdd23fc3f33da7fa2a5af3cf05879cc4848a2b55d2ce6a. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ff4ac7a-1299-4c02-8e16-46673e3893c9.json and https://artists.proofprofile.net/proofs/artist/1ff4ac7a-1299-4c02-8e16-46673e3893c9.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 0xc94e32142de62c580059b9587303813d6cd8b3c43441c091c70400a48581e1cc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPJ901713310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54417dc0f5f89dfb206ef8a16b2bf3f970fa0e4b825668879a51b38f8c1b17df. 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/JPJ901713320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f81e8effb1a33cbe6937ed620395cf40ee3d0ba0916bc9061effd1ca39d9193. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPJ901713340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48e78b50fe3d82f1fa1f10cf2b0fe417b89faece885a01362fd31e97ab48642. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/JPJ901713350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba8b02fba75493046891f2a432197f0b845ed97ea7c16a84836df9675b7557a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:02:50Z), 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/JPJ902007800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c55cb62eb72f4225dfa84c93c8b4f4afa1b18b1dd062e652771752e48d606f. 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/JPJ902007830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfeb0051ab54ea78ce141e00bc389ffb9ab924659d90bb17bd905345188a992. 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/JPJ902007840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12b6dee1cb1baef5bc33ed45878e607368de6917ea5b6961006c44d3bf35986. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPJ902007850.