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 0x2b584063f1633a284b9736fd723cfe7b95c5f13222b979240d3636abfb61b5fd. 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/200c2c3f-2a38-4c49-b4bd-4aa2e3f3f29f.json and https://artists.proofprofile.net/proofs/artist/200c2c3f-2a38-4c49-b4bd-4aa2e3f3f29f.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 0x72b21466ffad2286f647621ff9669c8b871a01b8d9025ca3802d9e2adde8711d. 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/FRX452250039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3146a7dbfb92c7ece1b1c78bf98dc3e4efc8e456ef507190b751f34bff6894d3. 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/FRX452250043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347575322fd55efc67e82adf5faf0071c2e6e084268349a2f585006be9ba5bc. 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/FRX452250044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093e5ac8c41ad3f92615390bfa5be5f85cdef143eea6b643d8167ee26b07c115. 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/FRX452250045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7088e2eab967e59ae99e2d3aa148f1a90625fad6234de51c87619aad9af8885. 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/FRX452250047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92a67f88518466b613554575382770c40f56a4b123dda432116e89a0a911d81. 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/FRX452250049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5f61ade10abf167894ce5a117d1e72b8071dcea0ed6e709d33a5a78cf3fd8d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452250050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f61778ec34bd13202feede8d001a30ceb265554fee6eb86b26fedbcfb9abd3c. 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/FRX762006607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e2c1518ec58cccbb75c96ccd0a44bd676874e5c23fb585501352319b189ca. 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/FR26V2002544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1178eb93eccb7457deb9dc4db3a434e4b7c0c9fd1337effd42cd2e6967e8fc93. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR26V2002546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887370cac7f2b53e74dd07a1f7e210dda048f2d484b38bad477ba4cd3617b399. 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/HKE022258059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060011eaefa8ad870fe77c5e5b84fe209c88ecd97b22fb38c4304d370e016339. 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/HKE022258061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf06c98f7ad048620dc389a119ffd3b6bc9bb04d42e016d40882d084949305f. 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/HKE022234766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023e5e3dbeac3d5df5418843983bf40b48fa2485734dd418986a4d2a387221cd. 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/HKE022234769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40305f419a1bbb9555cafab754f14cb5a470d3303acf7d66f08d7f66c351bd39. 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/TWDL72017588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf987497fb82afcc9130f42164151692ca08b92421d548d57c7af5cdf4b3fe59. 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/FRX872155433.
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 0xb2e3d407ff8274eeb6cb366fea9883317465bc26cb8c588cce7d7f8de7f69cf0. 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/CNZ852305641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4c34adf925cbc68025864173aa7215144f50d49c0d7b1d040bcd4430b350db. 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/CNZ852305640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20d54fded1ae330dae32477f0e22a924be8906b2c21d6bfd5b86aac51b62d7. 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/CNZ852305636.
Re:Walk (从零开始的活死人帅歌新专辑发布)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165b77722f28c7e17f0f8d4a4d2cfa3e7b0e8ff73733fab70765b36999d59b89. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG732002014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed455750402272213dd51087b0fcd54345f44438fdafaa762547446c21c24745. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/HKG732002021.