thumb|Nemophila at Hitachi Seaside Park Nemophila is a genus found in the flowering plant family Hydrophyllaceae. Most of the species in Nemophila contain the phrase "baby blue eyes" in their common
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 0xc3e6962b69b94d97e60b6d0531c196420f60859158a825b155b6873112a0ae8b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68d2c621-267e-414f-9c41-1849f0be6a58.json and https://artists.proofprofile.net/proofs/artist/68d2c621-267e-414f-9c41-1849f0be6a58.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 0x7f105496d8d9fa4eff147dab0388333d676e906d330a61b6d49e5c31a82b2cf9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPTK02000899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce54b53aa540b8612c7a2f5b3c90c2aa66c0581f3e4f654f9323d650d1ad3c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTK02000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afb19ba9ae6015784409a7894d59a8ac41978a8f84a5d1b734ecddcb487fd41. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPTK02000919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f105496d8d9fa4eff147dab0388333d676e906d330a61b6d49e5c31a82b2cf9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPTK02000899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce54b53aa540b8612c7a2f5b3c90c2aa66c0581f3e4f654f9323d650d1ad3c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/JPTK02000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afb19ba9ae6015784409a7894d59a8ac41978a8f84a5d1b734ecddcb487fd41. 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/JPTK02000919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9b2a9bac75a288d41ba1c1ca2471a3c15458260dfbf2d093afa322c7bd8c31. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/JPZ922100996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42dd1ac0d03421287424ef1d119bd214f9b6c580734559751c15e4e4a8adb11. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPZ922100995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9b2a9bac75a288d41ba1c1ca2471a3c15458260dfbf2d093afa322c7bd8c31. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPZ922100996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce54b53aa540b8612c7a2f5b3c90c2aa66c0581f3e4f654f9323d650d1ad3c. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPTK02000909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afb19ba9ae6015784409a7894d59a8ac41978a8f84a5d1b734ecddcb487fd41. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPTK02000919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c0f6fc216debc9317d0fc171430f23a606067436ec1b6d4fcde8f17a732172. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPZ922008502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42dd1ac0d03421287424ef1d119bd214f9b6c580734559751c15e4e4a8adb11. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922100995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9b2a9bac75a288d41ba1c1ca2471a3c15458260dfbf2d093afa322c7bd8c31. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPZ922100996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff36d31c18d4766a4aa45d7a835d04dec8404a3ddf21d2149611f62fdd450d4b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPZ922109909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897a6e9c4f0bec60055292e7987a68d295b5f77ee8426fcfa596a92d8d2b79bb. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/US3X59407002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b2b531db601c1572f98cccc7799e26752cc3ed83a638bfd16af9028cb3df5. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/US3X59407003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67b2b531db601c1572f98cccc7799e26752cc3ed83a638bfd16af9028cb3df5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/US3X59407003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a7bc9496f1bb18c3e8af42dd05a1f98ecea47c142dd5f9e500d7b8aee9a177. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPZ922205916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c4d954c297779ef47d166bfdbd8883cb42c844b29b895d01ac14639241c1cf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPZ922209721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8932aa91f3445591a9e4e8e7759ad76fcb5383b816f3aa2c5d8dd79ed1bfd577. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922211485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf8b4566442a37a1477773b9453e809252b2e8d6679ab5ad8358b540d86cfc3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPZ922211552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a1c9d83d41d655a2b331c53a3dcd824456b875df733feb0abe7d26518c21d7. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPZ922211492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5075a071738a870f83b599b23805821ff256c406654daba0acaaee6e2dac5334. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPZ922211493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b46b995e11b08a3cfe106f1b987fba803aef7b7e5003beaa2003c1a0360d6. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/JPZ922211553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0b86d88ae3c096d68a4c69c56edad7a5d8e851dea9c1ecb38a1358364881ff. 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/JPZ922301629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d6973a68c22bb0dc0428778ade586038d544abbb521fa5ee9f360cddf5829b. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPZ922308107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8d0d2a3045c0b9ac26bc018fb5909a62ad4af78974fe24d26f3a8de62c3738. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/JPZ922308108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e08dff827dbd7cab3328e365d07094f2750cbe5921f84a80e9723cf1f057ab. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/JPZ922308109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28cdafe6e3a76d80c7350bb2a79ec3f03959ee2f10d54b793fd442c6278c718d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPZ922309265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d98b4f946de56a84672ea29f3b1126ed62b5f642b4a0bb2e6708110ae97fbfd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPZ922310037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f7fa9dbad6159f7dd1be756088cfad4223587765ebc26a9e5bab3c043a4211. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/JPZ922310507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1238c29f3dfb278389e70788887fefcb8149b786aa7a3a0c98b3b7a6a732797. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/JPZ922310804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6314181ea4a7824b61a94e17734ecf1aff8b15949c8c84f826a353d6f16a0534. 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/JPJ902402790.