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 0x1983d3dc1bf3e3d1cae2074c42bbaa5ec4edbbda303a3fec2011bead4ad25576. 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/315c6c5d-29ba-4fb5-ab30-21bc1f6c34d3.json and https://artists.proofprofile.net/proofs/artist/315c6c5d-29ba-4fb5-ab30-21bc1f6c34d3.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 0x2b1820ddf6009a033734fc45b13aee557cd33cabc3d89af9e17dc54cb41ee951. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWL252307303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f21119f1241ef2a06b769651958fc0c58f31485b4e6158aef90dd45b3ae61d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA472496005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f56fc59978a5ec54e9f2bdf7bd2e19a70ae8b7b3f465025cbf98b421391d20a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA472496004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af3f3e7ea9f80a9993894cce694d331b56fa749663771ac827b18e631569635. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA472496002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa222482687ab0d026bd99dcc0bc642641216aa4b69e959b23a8b532d46e92d67. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWA472496001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092d55fb9fce2bfaddc996699a72cfa621ff56eb768fc1069682dfb9b648e8b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USX9P2371684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049c8c510a641802ed29fd52a03a9ee097f52d8d97c69c79447ed4c69e78ce10. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0R2301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9db9793fd263d1323353807f49fdd43a44afe5325e529c12a55578850779890. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFG2399887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0daf6eb5a7f442203936002c4912695ffdd7847e70c07d18dc9b4547000723dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0P2316999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b081bc5447305c11d267476b6123d25bb3434fac37938a1d9f7b4b70811518e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USL4Q2334575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe0580b22194a6d540a7b0d49480c7cd84899b8d336f3529792d0963e79edd0f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA472596007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f710ca41fd4ba280c5322279a6b6374f182044ea09609d229435e188edd15e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWA472496006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d5b454fa1c721b8df42f1755776a2d7daa275d252b205acaedf4c17f907f74. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWAE32405082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab863eb8f7f6a35ddc11e9d21cfcde9be5f0e421ed40912010e5b052ecdcc20e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TWAE32405083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cb5b17238f8a5bfb7f411c0b9320495ec85a5e17d45d035c12c2cfef2c0a5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWAE32404454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e4ada1f9e90f43fd2988e9df42aebadd0f6221ebc5eb4b7d962c71405f5a58. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWCC32418637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3c7435271dac79ed82124fc5ce09167e6faab529e9f4516a84bc102d5aff5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWA472426001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd048e02bd79c606005766ad0148bf0c2a2f46bc54f18b9945fd5b5d05504d33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWA472426002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc777e38d22fc5647f8de514c249a24e6a5c2c77ab63a56a0af0ba35aa11f15c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRX282489450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a45c3d7f6590e90abc6db1d37ca29a9fe997f5336ebfd0e0ff33ce2e60b236a. 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/TWCT52321460.
我們的歌(網路劇《高校原聲帶》宣傳曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2b4ad476401f4862075fe81562c32d9caeabef4564c22e263ae62815a18270. 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/TWCC32400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7205c1e966b8b533bf290476b115d47538a61feb9fd4a4b6dbfd53e7d4af6e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWA472596008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2b49e42a71405182674ff6adc9e88e3d2a1c6581f9d2bc0fbd9626e70d1375. 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/TWA532500091.