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 0xfd7167f1f24226975f54434512fcbfbb8e3526335acb5f8d71a77c5e04d6a6ef. 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/ea88bab8-6337-445e-bcbd-7c5c899b165d.json and https://artists.proofprofile.net/proofs/artist/ea88bab8-6337-445e-bcbd-7c5c899b165d.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 0x9ecb8a2eee28ccb20ccefe14c904e54d328fd9297eb0bfbf56cbb01cc1dcdc2e. 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/JPZ922400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecb8a2eee28ccb20ccefe14c904e54d328fd9297eb0bfbf56cbb01cc1dcdc2e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPZ922400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee62c85d0237c64617549637382fcbd890b88cb256fca3bf6facd5630a1b00. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPZ922400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e5beafa901b0aeb2b68053b3368fe216d76e59d6ba528ba94a36b95826771a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/JPZ922400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656a342bbc489370bcdb6903ec79b7d564fddf93c779e601dc640f729a639246. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPVI00522810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e6ace8f518d62034e358e39e151acf9ea5544f7b4db4113efde5859f03ff22. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:24Z), 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/JPVI00522820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8e9d184200ca2e33ae47853031cd273637469b630fd940896f32525e919d09. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JPVI00522850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa4a51adb14f3e9d46052a9a03cda72111b591ddf6a0805ace7f06da02f831e. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/JPVI00522860.
Moso rendez-vous / "Tokyo ni Furu Yuki..."
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80d4ffd4ae673369dc8d4b19b4c7a01abccdf0ec276f181563ec9647ec908f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/JPVI00625330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d1b390281f37124e06ca88411204cf1a198006996131a93b04f4d44731504. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPVI00625340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ff6999ad49ba6572d45f3a2cfb2896486940415d5dc64b5cb09c4fd488eb41. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:26:44Z), 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/JPVI00625400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb94a08c4ab59e8c127bebfec7606623e3b7a3b9994f47c0e7c36210b5ee8ec8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:41Z), 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/JPVI00625420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2271aa05dd49cf136d836ff24b059a391c3e4a2824e297a4a593a9ef78f852. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPVI00650820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e07922d432a2b776b2b6fca0603b7e56a4147e32fa11d33cc9ff4171728f84c. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/JPVI00708700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5118d15424d98396863f11f1c390873eeec9ee032b1dcb6f0a1819dcdeae7695. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPVI00733930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fefaf9952aa22f0f348430938f9718275d4084e43584c411c5bd3d65d940147. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JPVI00733950.
学生街の喫茶店/伊勢佐木町ブルース
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dec13600bef43945bb6a8309a4890aa002e6614426ebafe9901a63bb3eda9e. 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/JPVI00522770.
Midnight Shangrila / Karappo-na Uta -final cut-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f46d169f4c50b4802cfdd769a56924f36b774f8dd8d76d23ca3081504a38a7b. 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/JPVI00900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd41fb6856a8566b1e998eef344f91389c05c2f09245f9923bbafdd7015ab86. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/JPVI00900190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae5b9f6db4dcc34f76fee35b5b6d77f2d2c9a4492aa73b3d4fd2af49f1edfda. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:53:42Z), 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/JPZ921507653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae09e8bb60259ef9d48b43c580f3bad02b30c23dc84cfb1553b4a72cd9ec41da. 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/JPZ921711315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f8d2e9e39418e2f5dc1bd9e94e368458655fec734bac8ab34ccfe9c347db0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JPZ922500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3897ba019566891586d78a96cd7b5509e2911efcc002c23c7dc5b2736d0214b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/JPZ922500182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a183c42c0ff3b4875c39924a650802cc3718fad3308ba731010dead88535163. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPZ922500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170dbeb476a8817311346f1efb1e4a51cafcba9b57c4cd85b4afa8d6d01a1dda. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPZ922500184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7019968e4b72ca926ce2272472832cb92360a396edf5c17197d9e81e31b7056. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPZ922500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b9c9d6c11fbd0ab61a5e0384464a500a23c25dd235227dfc06e5792a03f5f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPZ922500187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd25d460518852498500d9a9d2c79e369a817796ecd1f587982ed92a6832af33c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPZ922500188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf38984e290144e917b9d9f7e06f7ce7cdbe11d90b5ce5f4aa823fe9b2617d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPZ922500189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75e632866b0e26eb1239186f0515003672405d5a39260531ae756b88a4b467f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPZ922500190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed9af0f2c8ab58c1fe2a23e08788dbb89210d856c4be1efbf4c547b283fd205. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:13:36Z), 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/JPZ922500191.
D'ERLANGER TRIBUTE ALBUM 〜Stairway to Heaven〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6154af591b47f73bc60b14053bad5a5f8c1738c398e166e62d1cd39810ee3c6. 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/JPWP01771892.