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 0x8992d89a6ae6652aaa40b0ec917300f68923a850a14dea98d0411ab40b4bb347. 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/f356ef2c-8e77-467f-9dc9-855382ec3468.json and https://artists.proofprofile.net/proofs/artist/f356ef2c-8e77-467f-9dc9-855382ec3468.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 0xe21e2f6a3018d2529867dc7cf992f1e6ccdc1dc31b9a71dd06c694387e498bdc. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/JPI540800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd428b0f9064742fcbb9e3724e6e98c847d5faf42d9ed493e672b0b8db66432e. 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/JPI540800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c09fd585e6c48429fd1812e6c6cba57483b60872b9990910ec03af5ba9757a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPI540800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad285bf6db36aa578a2eb01c0073ea971115ba8c0f44095dbbcd86c04ea788c9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:04:25Z), 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/JPI540800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1577b1f2998e4b65304fa3913b23e36b18ca4f5f078a4aabfa1d9f9efee5e18. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPI540800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd907cffb15299846ad0f3ff7cc645290348a9e8eeb4a3b0f4dc697fe08b79a14. 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/JPI540800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3ed7b6a51e6c235690d9ad7c1df473d30bfbef0f2c2ba94f7f5083a08333b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPI540800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012aa7c4f43b3bb322a6d036fd25fb4a3d7c4ba093ab62f032ea20ea5dacb9ed. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/JPI540800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb763d40b5517b4b8298d4327763f033e0fa6cb541c73002e23726b0095c40a16. 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/JPI540800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28e5766ce39abe916350ce8f7c1c42b221673907c0b8278c0a5d4a3f8ac35f4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:05:55Z), 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/JPI540800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c80c701a3031d087513efe48a02fa731f0baf142936b1dd160f781b2ba90539. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:38:12Z), 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/JPI540800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf45a54f1f773d53f1dcf54e16af2e40e59a530fc4cf2f1b67e36c1f345eda4. 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/JPI540800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a6c58c6a32b90b45a6b1652ead9f3335d9567844f9ee7fd530718cc46e8d5ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPI540800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1174f449edf063d47bd96d3a5b62a6629e0f91bdf5c91948726b9e547114b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPI540800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01041cf97dae9602ac3b433f15e249bad2cf000dc0073b16c65f567dd575da4b. 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/JPI540800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb1cafaf5c6c3c43ab784e3b0ce38e1819e94635ef9ffd2adc34d6ad4072bbb. 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/JPI540800127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4badf17922698e9615aa679facdfa9de7d428f480e06c872c7c350cd34132b3. 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/JPI540800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9a482c4550d2f7a31787c9b2fbbbd7343065bb29468cea8fb3cc737310343b. 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/JPI540800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf1f1a0001e2f1b2ab75ad5207132aceb102f64261a1d26ceab8dcc2abb895a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPI540800143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d149642c8ed5285d25b547bd9d52fd5e70afb6ae181323d389bf7deb1daefa. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPI540800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09bfc8b30d3bd3891aff685869281acd6d5260f97e44b687c6766194c401e42. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:53Z), 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/JPI540800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5063d143f14a6e4140bb73165e8754b0cf79aa7688c75f8a0d212b54d693b2a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:07:38Z), 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/JPI540800153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd75f8a8a7d5d18b9d623c8878beeb4307f900d9895fae86ef4bce72835a644. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:36:32Z), 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/JPCO01000420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012e4ab42e1fbcc6e655f2998cfc10535a27d8a59e26329c489fb95dd2de5fd. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/JPCO01000430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1389e1cb3d6e80f5a1daba99742507ae10686392ff33468f3a23258fde3e49. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPCO01000450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f35312d675683941ad9d3abeea1733d8b4d357552299b811c933925c65862f. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:16:26Z), 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/JPCO01000460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20df2a734024406249a9202ca5b2e09c592008266df2939f3efc6736795d3bb3. 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/JPCO01000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89d4d045dbfca3c3b3f8535197ae786c8b600704203ab0d077b030220717c60. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:18:45Z), 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/JPCO01029190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe534e96fa56a967eb7a8aad7f1689a6278a733b05ce55ecceb3013d7d2bd28c4. 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/JPCO01029200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93035216312f87844d63b8169215599ded2f304a057e7942341600a0b57bf38. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:56:36Z), 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/JPCO01029210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7044ab6d1a50a93adc7da7ed07bed58594d84eb0b77c6d7fe727778bed6ec87. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:20:08Z), 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/JPCO01029240.
星の王子さま (バイオリンのための)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6d891cc4aba43f8a7f91898b8feaebf7a8a5b2d970ae9f6b22bddab9dd9086. 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/JPCO01029260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819eb415d010a7382bf0f63784fa44367b95ded58c5b4226ce9e4caf5108c621. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPCO01029280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fedb4e30eb0039b23b86d805b454a098eb712ee8f2a7e3e893ee1eb41cf8649. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPCO01029290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac57a490aad1f5fa9edd130f5afc755a32e362166d4b4c8b1b764186fe57975. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/JPCO01123830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cbbc4b6c1a614029a610cba625a02a4531aeb53bcb666f033fa81bc3a95905. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:51Z), 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/JPCO01123840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310d497c88f45f91df10c62bb56a860d61a59928104f07218a7486477eeee913. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/JPCO01123860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa317ae0f9d7f50815b1772c269809e144f3dec00355d46dddf8c2bdc1f7c3d83. 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/JPCO01123900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b132df05baf4f4839238a5cdb4ec18e8aa843065c4513bd6e4d63356e6945c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPCO01123930.