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 0x131ed515f27302f87839921457cdcb52a1b52f561a5e5b4fabb9fd8c62eafe8b. 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/c5a07547-5c5a-4140-aff2-5f9d06b95ca7.json and https://artists.proofprofile.net/proofs/artist/c5a07547-5c5a-4140-aff2-5f9d06b95ca7.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 0xb194578748538da067ab3aa2df9369056a76bd42307f8a852377a80c1a3d97c7. 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/JPKI08279639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36c2b5e61695fd6cb7a41abb79ed2c95b805e895ec9dc7afc14ea235ff0e2cb. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/JPKI08279642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6295636cc8e97832523fa5efb9d82d88f4e091a874977b66a16ef5a962b9eb94. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPKI08279644.
翔んでるセブンティーン (ツッパリHigh School Rock'n Roll 女子校編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d81c69c72856b209cb3c79dacf9be6a8da0cdf4ad7baa38f0b3ada1952d721d. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPKI08177626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9e0620e959e38b2a58ae8397c97b39b55b25ba78720e88e304f42863e19e82. 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/JPKI08177627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f10c25f754503eaa1c284b46361ae64e9c0ebfdf7817cf26a9abc7886db929. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JPKI08177628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f99a388fe7e3c3cf151fc4d6843821fed895b366045363e27655469bd4700f7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPKI08177629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281b10b31151a11ce563f74b9fa81c4b69c14fd8ca8d0848d4f37deb85445e2a. 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/JPKI08177630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35ce5245b1f871c21627357f2d175d947f8589d968a90f2f2fa923ada07495f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPKI08177631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52c617c9faad9eff444d24e80c03e7787d18c065bed7cfc365ec64f868bd8f4. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPKI08177632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d8ac06b3abf9133b00ba015e3e9403b96640d38a8ef9a03a5e992609a3f4aa. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/JPKI08177634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853300c7a7c5dcb0bf469091d416c9e81d0463b53b51191af78885afc5ad8054. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPKI08177635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd92feaf62147633555cdd5c24c0ac527d2ceb33b2942dcb314adfa935de1b873. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPKI08177636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd704443615e67d9a86fabcc0b6e6987f4b4e6808e1d501da1dcc0d469f9aed6e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JPKI08177637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f16507ccc237c0eee6d9cf5e1704b651a915cf353347c5deadbfaa452d2326. 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/JPKI08076546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c8378090af4e24d54ef213bed08b8c4c22c0fc93f8a28487ef4e232d4e84f6. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/JPKI08076547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab637e64559652885d061eb750aa8844aa62d0a77eceb949872fb06bd078939. 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/JPKI08076549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78662969700fb9a5d10d2bd0476826b9f9d53055e5d331ed8f03b29fc63dfbf7. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/JPKI08076550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38596791cf2656a62f4197e585987d93025284b31f69496645fad1c6bd57caf7. 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/JPKI08076551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e473f41dd928ca21c00fdc55a12990a33165cfb06101eaf542ba817ceaa5f37. 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/JPKI08076553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c478f91f7540487a7c2bfbdcd78860405036bfa21cc34a02b1aaf383ffbe97c. 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/JPKI08075745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c683429988401e29e9a95371c1803246a41b3302a1cea0c8cbc5cb418778cbd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/JPKI08075744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7054e86bf9d8e0c93644f5e66ce09cd2d55d3484e97014156d3b03568cce516. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPKI08075743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc263c70aee57737fdc4cf5dc34f345d8e9e6892cb4b2c32eb7089311a9be77a0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPKI08075741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4334dcd36198c7a894661c60d4495f4ca2ca91c804f41596eeeba9998c009ee. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/JPKI08075740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9988412a4f8d519f96b0f43f16b9df4c97f3eaa75c2e8efce9617ee764c7b1d5. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/JPKI08075738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc263c0d333f75bbe22e0189905827fb4d14fc2449fbc95085eda6e3a900953d5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPKI08075737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bec06f20ec00c936ee988d5d0433f870da8b88a4d59f74081f60bd5d6444a37. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/JPKI08383884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97de9a115af8359b2c3036043319e3327e4917c8379bb6dcab33ba9cc56f4e67. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/JPKI08178127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb18a40264ab34270ef8a6269f5a9b7c1f7370717b371ff2ab3d737bcea1403. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPKI08281124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603cf5520263e06c691884debbd7698b794d055f0cbf532cd8b01b13e02c9eea. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPKI08382986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf6a21d3d3fbfd89799a651147c54b50de97909007cc072debe8d7c9f214b6e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPKI08382987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e2ff0c240bc5176c7d8b87cb7db2ae561d48caa03a4fa3cb9047710d595b50. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPKI08075576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b210f31820fa04551ff02d25f0ac2d54388085f14d8511d9e67196bdae04b6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JPKI08075577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4177475c9b2f92d6b35a093396f780429a0142a8c65098c7ae5a967971059691. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPKI08383868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99fac9476b0e9cadacf106aad10a192f20b81cbd20d1cfafe8be4b43d24129. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPKI08383870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5936c973f55e9219e5b94db0d1fdb9bcece9bc0009937c1215c4c0b8e81ac5b0. 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/JPKI08177598.
お前サラサラサーファー・ガールおいらテカテカロックン・ローラー
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a046e1b3e74f864e5e585149a220567bdb6369835db324825bd645e19cbb4af. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/JPKI02410978.