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 0x22bc061ce862ebc82628a96730d2a03e626b84f2cfc6a24c0663b8c645ea97cf. 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/ef50ca88-5724-4e46-a21b-a2b70bb42b43.json and https://artists.proofprofile.net/proofs/artist/ef50ca88-5724-4e46-a21b-a2b70bb42b43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
二人でお茶を～スイーツ＆ティータイム
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 0x7a77328d5e93b19d3579581ffa6a39dada30408970b339fe25cd4e38e5826e4b. 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/JPQ702300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78b8603b5173a01f8b50eb44dfa40685d36f9c0c12ba6f22b2786298893d90. 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/JPQ702300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad0c350411da5ae8677d42a6146d418ec2f316fc2efb883d7e2abf5db84503e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPQ702300003.
オン・ザ・サニー・サイド・オブ・ザ・ストリート
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a63c0a40fb61794ea64026fc1b6a895db216f630e5284f6b46de81477c402d7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPQ702300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6533b6b91faceb252767c83bd2714cd9bf46403ca2f11d17d5f975f7245b21fb. 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/JPQ702300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ea86e9e2f2e5ae5aa47e7cbccb1ef1330f5b80389db21551fc7095488d4912. 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/JPQ702300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa08f290095bfbbd4a2dd441a5291f7d9d40c5b364193f0e0fe56e962550ec70. 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/JPQ702300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304ebd4e638b584f0196fd4c6de52f719e8b834f5ae81cb84899e190edd11fa6. 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/JPQ702300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3968b819a7d3c33c9d5d56d7db24ffba12ab3c3980c6e8a0bee9854e60fe7cf6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPQ702300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3cdbbabb2fd4a39018ce7ca3de28c3eca602208beedb67aba4ca599a6dec48. 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/JPQ702300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79005c0236764af388dca5332a945256cb43b452bf863942c8fc277944615aa0. 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/JPQ702300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3beaaaf3dd6abd7df8a114cb03d9951f03e3c37184d7436d323c56e5308f1fdc. 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/JPQ702300012.
ティータイム~アフタヌーン・イン・パリ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949f5a4c6efad0893347de7b86a79d9e8a1118db5bcf9a07fbdf27d5ca4d8cad. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPQ702200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a29275361024892ccc01e7aa626b7a4ae67303799fd534472afb9d2090b59db. 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/JPQ702200379.
アフタヌーン・イン・パリ(ピアノ / インストver. )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0a9d86c2632b5d6e9749f1857c074063ef636105ac554ecd02045576d987be. 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/JPQ702200380.
スイーツタイム～愛はきらめきの中に
クロース・トゥ・ユー（カーペンターズ / ピアノ / インストver. ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35a2340fb5e024907fbc21f85d4c52750a9c9789b802d608c65f08f6bffa2c8. 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/JPQ702200375.
アルフィー（バート・バカラック / ピアノ / インストver. ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc00f5b571e156c4eca85a85823dc5b35a7e8731bc283a5baffdfb8f0ab5d20. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPQ702200376.
愛はきらめきの中に（ビージーズ / ピアノ / インストver. ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88821f1e746be06f47dc36eb17f9c16fe03a61c56b25515a46b38f86fce12ff4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPQ702200377.