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 0x58e9f7ea48580994433e60af8d94ec6ff8dcd6d186e6c391e14c505afc2f3da6. 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/26d10ed6-cd1a-422e-b4f6-75c446666540.json and https://artists.proofprofile.net/proofs/artist/26d10ed6-cd1a-422e-b4f6-75c446666540.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 0xa6f36034cb8a3f9dc5363d92dfd8dad3d88d1140fc68ac4d1e16e2e7eddd9c12. 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/JPVI01744110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7365677341de19d32f35a268e7e97f15ee8e05aab2b432a40f1cea7e7323061f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPVI01822751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fccefdde3934f39ca81f6762779ddc40d02b6afef0f1cf73537206247cebf5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPVI01822711.
辰巳ゆうとファーストアルバム -力いっぱい、歌いました！-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2f3dba758039a6c355d8010fcb780d7a363e72739a9894926273b16539ccdc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:27:25Z), 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/JPVI01904258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6afcf20621d3ad347ffb3367f48237b26202a8e1906007e2d52e496f4de839. 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/JPVI01744100.
センチメンタル・ハート／男のしぐれ（Aタイプ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fcf36644e9d0d0afe22d1c8c97f1f789353744ddfe629c7bebf72a80d39af6a. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/JPVI02000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c718f16d3330b7890a474d9405cebcaa7bffc5c38cece0239e6624678b6ce41. 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/JPVI02000100.
センチメンタル・ハート／男のしぐれ（Bタイプ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3982bc884200179510dbdadce8f4f4cac3ed0f68a102cf4e49af8b5449eda61d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPVI02000099.
センチメンタル・ハート／男のしぐれ（Cタイプ）
センチメンタル・ハート／男のしぐれ（Dタイプ）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad370836476817a1b0291a0d2c1600ddd4efbca0151c7e5273efe27ee8879c71. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:18:46Z), 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/JPVI02002841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86274dfb8ac7fc60e6c339db87619810a75a63e990902e22ef35a4982fa1af2. 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/JPVI02101837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8965fa010ad8fca9e7a1052911874f6d693c6e1b3ee23c0301c0504860470. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:37Z), 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/JPVI02101839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c43065a66d8db10c204ad86458f8a504400bbe7c5d9453877ab2dd74d5f9a68. 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/JPVI02103032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a53cd931612bd8c1fde8f21ff01c8308d6232164dfa3b39e297549a85c7377. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPVI02103034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12eeeee34b2d84a32fa82599f71c8ec85e3ecde4fc6fc17dbb3251c72e4dc7a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI02200434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08896e20795afeaead40bccd3575759d0f83542eac824f82afa57d5015d6add7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/JPVI02201354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b5c908cea06c8aa29b1f4fb2f32698d545038c05fb4ea07ff31c913bc2b556. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:19:21Z), 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/JPVI02002835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569bb208abe62d7c8bd8ae5adf6d070efbf01051b537fda64b14bfb8a0fecd76. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPVI02201362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97416276b18ba87784e7d458f0e761d114681a7a2b081ed70418fa01b9c93907. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/JPVI02203746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00d0bec7976cc1c1a1c101355333a466d75f1ea59c4916d75ee35df79b87679. 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/JPVI02203742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161ec414111308ea6043f272d4f7dea0f3e2e5c019121b1969a092047b6efcb9. 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/JPVI02203748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde679caf095aae9522e2394dbbf2389bc48bcc057e611c1e800dffb0822f1b00. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPVI02303312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb90abbd09f65f35d626887ba4c38000f95c23d8c611dc3c63be135e90d796ec. 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/JPVI02303313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d97c99f753dc9ada334b70aae793641653e996d02d5b396026d87b0db3df86c. 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/JPVI02401091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390186b7c63a8789e734cdae0fa8a6d8dbb21fa5244e4de870633c02ade6de5c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:37Z), 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/JPVI02402794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a688acfd86a75fe980971535c9b669489489ab0fe9a9c2825ee7130db57575. 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/JPVI02402792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e5f57b3c07cbe06cb8e344a5cf76a6f2d6f86fcd54f823215f4d9288694a99. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:48:56Z), 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/JPVI02403720.
どうして泣きたいくらい好きなんだろう
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b729cbdae986639e1a4d4e21d42fe3e13fb8f884ae5466bdf8587ee36115975. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPVI02403715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23feca27af7c66f74b44522745cc4305bf3eddaee6ee5150cceb8589ee56432. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI02500726.