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 0x8be3763857f38f341a91654edcdcec89838ca2cba5e5d23f515a8daeb5575d14. 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/f561e77a-72ae-4003-82ab-d728447d32f2.json and https://artists.proofprofile.net/proofs/artist/f561e77a-72ae-4003-82ab-d728447d32f2.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 0x2b72e4985bebabf3297865e811626331a3f09d6c6f26d806a618242b5a41e6e9. 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/JPB621800698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b6ae3e2edf490f7ea6c350488bca8337e1bdca60d7a97a6e692308fb1c6b3d. 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/JPB621800700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b07f00e72747dd56a2bbd3c53cf0f8a8feb2f7b396cc378aad3127d37fd44e. 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/JPB621800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f45af3578dcf263bdbc9cb3042814ea686602baf20590371598c13cd185c4b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/JPB622100736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd376ce99a8bac0bae85ef18dbb1fe7f826a2ac4622bb5008a57a2f5b044249b3. 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/JPB622100739.
TV series「Convenie Heroes ～Anatano SOS Itadakimashita」Original Soundtrack
ドラマ「コンビニ★ヒーローズ〜あなたのSOS、いただきました!!〜」オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d05dc18c573592561a05036fde9d27920b5c447ff7700f32aff1ce2db9c36c. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/JPB622200449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d05dc18c573592561a05036fde9d27920b5c447ff7700f32aff1ce2db9c36c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/JPB622200449.
カンテレ・BSフジ１０月期ドラマ「コンビニ★ヒーローズ～あなたのSOS、いただきました！！～」 オリジナル・サウンドトラック
TV series"CONVENIENCE STORE HEROS" ORIGINAL SOUNDTRACK
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180dbb6603eadce75389a7d1155c8769c5221be46825150f95d0a241b259e86e. 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/JPB622202977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5618bd7a17dfceb1d61afc878c619329a46d0924f926a8cfd44ccf276a92ed. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/JPB622401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b08e5c32f551e06447219bdc8594c99e8d0218e7d7723498a4f9fb85ff8551. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/JPB622401141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5618bd7a17dfceb1d61afc878c619329a46d0924f926a8cfd44ccf276a92ed. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/JPB622401020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49c01f8a102340691acb9ef4076c60bd8c9bcfa331722ed633300fc710d2917. 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/JPB622401142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4564cb849547e58dc4ba6a8769c25257e030d66a042a8b94c8ef15254d2a6d0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPB622401144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310c09f87ccf4ab2922ddab711075bf31d4ef32b20b0b44f4025554dc0ce9dec. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/JPB622401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7801c92f76a9ebe7a7334791e6f48f6590bd7f5ccfe9dd6bc2e80140620102b0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPB622401654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b31a8714b49bfdbcb88fc18123a7a225cf752d7e356376de13258a86386b05. 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/JPB622401655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465a8be454ce0788cac2480f2651f2b8136aaeecb09b3cd659caf2024b0dbe77. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPB622401656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcad333fdace7c11bb0df40f35011a2f3d33c8128270c0cd44889f0790934fa. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPB622401657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c1cbee8787947c7fbf7ea7e32f209541ee4e381a70291b54d45a2a3af5e6c. 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/JPB622401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a80bc027e6cf29096fdc9d371b81c7da99a78f84a9c0b62dacf85bdb32ea14. 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/JPB622502659.
Playwright Library of Sounds vol.2 -solo works at home-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ae21e536b652aaef314f64e1a3d1b52a2a24b4299d11319232c62f2bf99cc8. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/JPB622000559.