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 0xa5fb4a99d8c5596829a19e2f3f6b9e351c27a5ced2739575faf271135f912aac. 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/cbdb0236-15ae-4a8d-b3a8-0ce21ca0e6c8.json and https://artists.proofprofile.net/proofs/artist/cbdb0236-15ae-4a8d-b3a8-0ce21ca0e6c8.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 0x4dc1fd07ab6238b8b35cfdc42309f09feeecbd85b42299bfc07df12342a6e6e9. 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/JP92N2422040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0df3a9241f430b98246bad3d6dc7a740e807967308c67522b6d36d2b05738c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92N2422041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19921f86bccf7697e846831b8f25a50aeadfaeed69fe0e9da9bc714ea5d753cf. 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/JP92N2422042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcfa44ab20ab77658c2b1c4fea8672cfd5f41b9b420bf289032f7748a9786e6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92N2422043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947b8a633945c1d597900311b879c59cf48e82bfdeadb42c9db1295484f3079b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92N2422044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20c382ea897ebbff79c2a34f46d2b868b286789a22f768b72fd4070c9a93500. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JP92N2422045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64718bbbfd81e14000fdd6074c9d6e0c7b0d9313e57ebfb5eb4e62a31e5394fd. 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/JPC231500919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19da972abc34c716b0857c0de904be8388bf6a0e8627faed8a64845c5d949b. 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/JPC231500920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c530dfea9c598869710b0723b3b6194beb3da64b50a17a467c6182f6a22e2af. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPC231500922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222385e05fec55667100399f92215128c545c01f0964dac28c0662f719215c19. 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/JPC231500923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37380b783ea40a1d8e861402f0156e86bbfe4b52b2a6d31384b3325b1aa951b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPC231500924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f88516a7f676af909258d52803d220191d1cb3336447cc01df5f29a17630e08. 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/JPC231500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd4a65e793be4a3d89557890541589bf286e22c9e054739968f9fd10b333b63. 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/JPC231500926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c91b4b042e3cd7d757146fd02a04be8694a08f7ae5562ddb241392b6458dd19. 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/JPC231500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dad3c587e4982af38a4cc1c3dd04f7b9e4e957054c67ce0f2cbed0626a29369. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPC231500929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2e57474b31236b8765a01afd5e77f1f9cea6284d1cff49e62b791fcb555710. 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/JPC231500930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf859fa1329b895a41552a58980dee10a653372b8295aacbe0429d38b718901d. 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/JPC231500932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4af5a2cf7e524fe415dffca38321d389196c60c4205375a42344714f44b601f. 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/JPVI02402055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e4cad14f0bc7d4f3004ff7ad21072bac13d2c8896c2bd1519eb4db5aa6c7bf. 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/JPVI02302936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a79a5f31d1569825f3304fdb0daa58dafb4712572acf1f82b200a5fdc33b56. 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/JPPC02000923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bd8e5d0845d7c8f7b11b00869f75724a93a292f06a33344b441f3886130711. 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/JPB602190676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36ed5fce114fda94dfcb085e176f173040ccdbd9f5c1442d646c575dfa4bcae. 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/JP92N2430809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49062cf01b64a7415763a3fa099a8cb0d998fbd8b98dfcbc44a40b291099276d. 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/JP92N2322937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd023f9512673bd944c0455c9048a67b1a9bfee01b0ecc7ec2681abe440d652. 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/JP92N2287297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8befd9feb2e9b4dc8435e07d113b7a0d13b3881be19ce59baaca49e14491d325. 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/JP92N2412107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92462daae312ac53b56481d2781251af235a6e1a34b47b24418aaf935871a0c3. 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/JPX522200052.
虚構の塔 - feat. NORISTRY, あげいん, ジロー from JJコンビ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9daeda81deab8c3fdbf1b5cb0cc606f5737b3974da52788e762138916bb55fb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX522200054.
Update - feat. Dream Shizuka, わきを from よさこいバンキッシュ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d40105199c5eb9b49497d21cd7357053b607b91222dd71aab900549b45eba87. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX522200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81b3e58064ef219387ba8f955b9d10f4d8ecbfbbc124f6d791f93b3d56976d4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX522200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a9bb80e15d40693567a730da53bb48fdf982650c1d370f746860188e119eae. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPX522200061.
魔法の瞬間 - feat. 心之介 from ZIPANG OPERA, ゆある, NORISTRY
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a0e1319bea40a4396f297897e1678c0b85638108887b6d87e7b4c62eb6f4af. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/JPX522200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3391f34e7b3c8cb25aca6a6b301bc52e04b673f523c183d2710c46f41d1bb. 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/JP92N2366382.
魔法の瞬間 (feat. 心之介 from ZIPANG OPERA, ゆある, NORISTRY)