Yuzu (Citrus × junos, from Japanese or ; ) is a citrus fruit and plant in the family Rutaceae of Chinese origin. Yuzu has been cultivated mainly in East Asia, though it has also recently been grown i
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346f70118a2721f2b01171b4f56b7ef6e0f60dada1ba4cdaea01954c7569769. 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/7467256c-f84b-4598-b42b-d2ec3d2a4e34.json and https://artists.proofprofile.net/proofs/artist/7467256c-f84b-4598-b42b-d2ec3d2a4e34.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175897d92d1ecf74e2cf5cb3586ffe4af4b20b0759607ee5f752445b82015d7e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:48:34Z), 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/JPTF02416404.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00f312bf092a597ed30bcc5f866e35d32e8e313d4bcb470bf2f009477751ddc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPTF02012901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe651f5804108bc14bb454a32f22728bbc0321e2208f13dfb605bfac4ae17a625. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPTF01812101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af1dba014d722b8def69741d5755eae254fababa289ab9be9c37f1d5c26b2d6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPTF01715201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3805eb8016eae2b2d7f4b4a8d25b72c5b7b47f67d7456ff936a1db6ecb0241. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTF01218801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00912853371349671ea4e9d496344ef70fac3150c661e065098c7cd72324fed8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPTF01320201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d02855ae2773fc2dcf96df202a58f57e134ed68e94565cd29763b266d04858. 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/JPTF01320302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9bfe8ae1436214946aaca4a04982280210ec6162cba7a23aa76b549f0516dcf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPTF01310701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebc4324352ba704dee20b6366de0da4dddf98f25100869a4f60f7a94ef7822d. 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/JPTF01304101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff784f74e667cfe1885c7e596031628831a4603c6c25a0e3c9442ccbba51344. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTF01304105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134bf2e116e5106a3af4d12076837d14459f0c3e7baf62177848ff192db2ddc9. 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/JPTF00911101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a956334ff38b19f3c70b8215727073b67becb6da930d95c22d5f5779d5eec95. 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/JPTF00700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b617dc664c5c76f9ff358d6eb7073a40dc401b4230f733447a60cb3e5979247. 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/JPTF00407209.