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 0x18df23d41ed5b9fe225f01848bfa9cd61765d2dda32581791a7f2944cf562a93. 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/bbbd069a-0620-438b-9070-4477a6bea27b.json and https://artists.proofprofile.net/proofs/artist/bbbd069a-0620-438b-9070-4477a6bea27b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
朗読喫茶 噺の籠 (弐 Another Edition 風立ちぬ/野菊の墓/舞姫)
Roudoku Kissa Hanashi no Kago (Vol.2 The Wind Rises,The Tomb of Wild Chrysanthemum,The Dancing Girl)
朗読喫茶 噺の籠 (弐 風立ちぬ/野菊の墓/舞姫)
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 0xd2a299c52417f815d4b1cb1839694d20983790a406ae9964e30786e78fe5fb93. 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/JPR292000735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bf2b0980a4cb69f49a4713d79d6f62ebf0f93502da269b3473e7e4a423a545. 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/JPR292000736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979b2e8d597e7db339ab5e9417c324998c4b01f67fa86409289a2c295e65a2b5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:38Z), 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/JPR292000737.
Roudoku Kissa Hanashi no Kago (Vol.2 Another Edition The Wind Rises,The Tomb of Wild Chrysanthemum,The Dancing Girl)
Roudoku Kissa Hanashi no Kago (Vol.10 Another Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f05917b3663993ec4ab1c7088d34f6beabef0e9d0e1f1d1b3faa51689ac55a. 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/JPPO02104481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ff7b21ab1df378b7aaca134563bbaf866ee95d2276f8bb5083d8524d19f12. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPPO02104483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eabd7b43b2b53fad09dab2170504f368b0631c4842bd08e81c397334622533. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPPO02104484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f7a2e51c27519b1aaf3d2c488b44ccd748670b6db0fd7241d270271340865f. 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/JPPO02104485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db9ba13a81a96b9b05e51e74a5a05f6e54815c7f56db1126084a3f5f938b33. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:05Z), 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/JPJ222202397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41db9ba13a81a96b9b05e51e74a5a05f6e54815c7f56db1126084a3f5f938b33. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:41Z), 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/JPJ222202397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392645d4939c0e8dbc7bc2b4a5e21bd5e9adf76e9734ea9f04cea31fae505d14. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPJ222202398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d50f99885879f030c35c02a688bacdf3956ab41f3a60ca03ae9a851a2085fb. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPJ222202399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffbc582420b0b141bd661a5598f268ee10c23290fbe7ec651626ffd753d6bf4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPJ222202185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aa411fa8d891569e1497424aba97ed85560d655da06c595f341ea5919dd0e7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/JPJ222302693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff85dd6edb9e5fe81da024f4ad327775f11e238f369c0fe478dde6b81def88. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPJ222302884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fcb94d2cdb040d212cf7d04623645aa96ba0d8c0a27d3ff110791b0e52f4c1. 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/JPJ222302953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35aa411fa8d891569e1497424aba97ed85560d655da06c595f341ea5919dd0e7. 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/JPJ222302693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cff85dd6edb9e5fe81da024f4ad327775f11e238f369c0fe478dde6b81def88. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPJ222302884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb98d029cf28a2a7f8aecfebed4fa5bf3aaf8c305b2bd9065961bcd2b3230d. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/JPJ222403054.
梶原岳人・島﨑信長・武内駿輔 (フラガリアメモリーズ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66ecf3571328e196b30484d4254a3c16f42657517d7d9291882b8a747c501ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPA652400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ced34620c6b8be028cf513251f7ecb54f4bc6ffbc53dfb201ab06f17cdf2c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPP302000785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7eaf80e78864f2d8e5c56d133a777c497891975898c2242f1fb470d92acbd9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPP302000786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87108c8b426b2ff2c3e3ac62dca0c839db6a6570bc2294d8bb064e3b2c376f29. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPP302000788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63693d19caf23bb7fccdff34d6f7336aa0c7b86c0fe157bd8f8095a43afca664. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/JPP302000787.
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