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 0x32c1e56184f21eaec2dd7b274658c4bdd4fd77a64e6251fc1344b8e30f0783f7. 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/ef1cd331-3459-46cb-af33-7330c46f6612.json and https://artists.proofprofile.net/proofs/artist/ef1cd331-3459-46cb-af33-7330c46f6612.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
コーヒーカップでランデヴーって最高よ - modern style
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 0x4a94e045809e770ea588eafa1bbf5b3eefebd469e60d574bbf63ae17ec7c8a5b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPCO09561020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816422bc86397f1774923590729e68186dd49585e1521b735e069498f68b3c9f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO09561030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc13fe892371a16977f8be7f733a0fc0212867ca8096590062cd02f6439c1235. 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/JPCO09561070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca7102c9acdbe8d501b7f7e35eeaa76cfc26bae512b92ef7f9f4f5f32cb9e59. 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/JPCO09561080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731a47d85e2466ee5bc3300c120ed72324e1a26bb9e7e9e168920cf5b7283abe. 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/JPCO09561090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec061affd044fbdde74752709e5acc093bcb482abb5b4efc2e0920026d7c3a0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPCO09561100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224861f390784dbf3347ab531c93d5c02e2fbb755dd6ec0385abd36deef1439e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO09561110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f4261a69d192954bdb4989d6b40566d3b7f16d0d5f910e12a4731e13ec15b0. 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/JPCO09561150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1f502b19d619499a546a6b0074cb4e3d07e7eb6965a71f14ff65137a3bf168. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPCO09561160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8825a977e3129ffff71faa2546b94e8a183023aa69bb7f8ba0fdf1632bf8a494. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPCO09561040.
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 0x7caada67d5003dc253b477a07afe1771b5ff946fc9cd9280873653be31d47de0. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPCO09561050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170ebffe8041dca92e4c51e71048f9aa0bcf6d63ca22701a9875a8d6aaba12bb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPCO09561120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235241c2481ad0d0b52d89b237de0174c818d9820b9f08243579db5fe062e98a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/JPCO09561130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0000bee35ac9c86b2db054ec2d8875fdbcce07c3d88bb3fcf2d20519c5e10f45. 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/JPA962191564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ace6eccfeceb72909290e67fe5b3444fa632840314a079e740f19f213f10d3. 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/JPA962191566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50b7c91e76fd1b551f7aac16dd9bf3d843a986caf934309051b16940f600223. 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/JPA962191568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c238ce1dc1e01b11dab577d50bd9bab749b7dc57059a9bea5b695ef0f67666f. 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/JPA962191569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba497272d128f479c5bf81ed2b5c2e0b4e3995f2358aa0a1c90ff0e0ded33270. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPA962191571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530b32c84daf04ab02146b12accb79e502cf003f983479e27ccaaf3f3379410c. 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/JPA962191572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165f2f51081a0a7d11b2250f369f308a13da8fb0fa21ad37ef4610eab7594093. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPA962191565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52f8882c2a2facbfd6f179d2981dd3c36d3816234a836831ee3963d60be76bb. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/JPA962191570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aa74f225436225171f1e2a7dcf17f9bd9dca45eed4af30904098ba26371d83. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPCO09638320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127f670b85c74c0a3ac031bd38b5a4b72b2716ef41c3c947a44084f1c1a483b3. 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/JPCO09638360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d34490ee5873f111cd4c4877a3e5dbb313ab510123af38eff589f7f443080c5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPCO09638310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ef589baba2f90d5ae6ffd2655002bf71419020558e1be4c3fe21fb8c5ed0ab. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPCO09638330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc71ab4f7791bc7dc8ba864ea64693cf2e5851a95b0e2a5e520919123781059. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/JPCO09638340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f86945cbd595199c6ffeef001865f3ddbd34a3490fb5bad790479ebf9e7e62d. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/JPCO09638350.
コーヒーカップでランデヴーって最高よ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d71ba9c56e643db6655f0b20eeffb1811d32e352d92c237d0a7faebf6f8ab7. 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/JPA961591546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e1df3d161f714c4518ce8c31a5fdb03be2635f6f2890a5505039157cf44b5. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:52Z), 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/JPA962191556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08962e261088d78aac2d1774b3def9abd9b9113105fe7b0420568f081bd3820. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/JPA962191557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ccf03e0eb6f82f452124e772a303641f6740b879f24b2fe556e84b4889162f. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/JPA962191558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9585a38168fa6908ff7aa3b76eabacfc1d0d6b124cc7662943072432ba40a2a3. 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/JPA962191559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d0a27b4e92358b4f0f5d96ce913b81649d476a86337734aed2eb3231518897. 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/JPA962191560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0849effd74febc874a17ff339c2302cf4f9769d186dc8314c3d2e4dd51476265. 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/JPA962191561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212c1baebb8a29a451cfb01516fae2dc52684e2837046d7ade29f6e6b58f6849. 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/JPA962191562.