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 0x0a5bfb3ff35dcd2a076d562cc4951d66ec5d037b6700af3d61857bd2cb330837. 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/b1a6aa94-afaf-4aa5-91c4-1f6a93b0f452.json and https://artists.proofprofile.net/proofs/artist/b1a6aa94-afaf-4aa5-91c4-1f6a93b0f452.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 0x420529ebfb399335ab30fc6614117c0899d29e1b061a305a8ef346e434fc030f. 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/JPVI08701170.
You're My Love -You're My Love, You're My Life-
Hoshi ni Negai o -When You Wish Upon A Star-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7b8d9a241c0846fb7af8297117c6df4ed14d81c0d8fa30d62d04aa037cd2e. 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/JPVI08800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727ba43b85a20b21b23d8e5a8c1c9591ad132d32e18da9387b37daa6632da57. 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/JPVI09222990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1189cb03783fa23836b41ef29fc723a51cbe75c3fee07bad8132e736188ca840. 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/JPVI09223000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f92d3620f62d763ad865aa124a0309f0888839216826064d02ff1161eba2340. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:00Z), 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/JPVI09422520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8071c4dd0e0b1341445840e7c23c629735f458a15698676a3f056aa2729147f. 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/JPVI09502600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283033724579c3b462dfdad45ca840241eb7f28f4755c0b480df5ea1ea85a6e5. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:02:30Z), 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/JPVI09535940.
Naniwa Yume Jowa (Katsura Harudanji new edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9836592a441665b286ffedf3b72b1f50a4e3e4d5f4e562efbec788bb57a6adbf. 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/JPVI00237580.
嘘だといって（ニューバージョン）／芭蕉布
じょんから女節（ニュー・バージョン）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08c79249c53fb3401d0d8f7c2213c4978d792273a365dd1e6d1df2b8f935887. 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/JPVI00742090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0751ce0075d6e38cd4abe37cc9db1a840c01b087ea7282d65db8a596bdf37a4a. 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/JPVI02301603.
Yoko Nagayama 40th anniversary Enka Best
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8071c4dd0e0b1341445840e7c23c629735f458a15698676a3f056aa2729147f. 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/JPVI09502600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa727ba43b85a20b21b23d8e5a8c1c9591ad132d32e18da9387b37daa6632da57. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPVI09222990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc4531243a0c982fa45ca160a540e9a0db3151927080971aa7f50bcbd531a78. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPVI02301602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce227ee8c35abecea07542efd3341faf42ba5e5f82f05f63a903fdd0d3fc42d8. 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/JPVI01901332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8964cac258e45186b3a63c4ed003a3f480a0ee02f9af5fddffe2ad26647152ca. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPVI09632840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d30358947f452e1c999efd339ad59adddf38edbeb64c303cd891b15b2b509d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:11:01Z), 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/JPVI01828360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf8afd7a2601c225834049a75770324f53eb07c40b0982d00b4b1b0b7f0200c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:30Z), 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/JPVI00015370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c9c20ce9b480ee01e63983b24f6c5e9ba7ee060e0985990bb1f91621e4bd42. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:17:58Z), 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/JPVI09308260.
長山洋子 40周年記念 ポップスベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cd294dc65b9fe4bc108f58d2ad2be782dc919611f174a07f1ec2617f579cf9. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JPVI08600220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7b8d9a241c0846fb7af8297117c6df4ed14d81c0d8fa30d62d04aa037cd2e. 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/JPVI08800150.
Yoko Nagayama 40th anniversary Pops Best
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a7b8d9a241c0846fb7af8297117c6df4ed14d81c0d8fa30d62d04aa037cd2e. 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/JPVI08800150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa212f88f2bc4a544c7b7d8b5f26d822e797b03e2e0df8ad914c1eb1b8f513df0. 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/JPVI02401074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5775fdb354a7497596b5aa7faa53fb5f6fa540a0dee3ac793b31c685cc3cc47b. 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/JPVI02401075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a238732c240f11417c0eed88b83451aaa39e3acc0a84bc5198d4be27465035. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/JPVI02501028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2eb61146628525ffe8b174813813981e5907b1986c3cef7dde98baed46fc3a8. 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/JPVI02501029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10c15b77d5325226d3970eca1c9739f782fc6a4f325cb2d5bb9e84c6884d4fd. 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/JPVI02501027.