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 0xaa8edf163561c598e73120ad54254807fec520dbea3cda6b62a491bff97a191e. 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/d2827287-4834-487f-88cd-94a2ae2f477d.json and https://artists.proofprofile.net/proofs/artist/d2827287-4834-487f-88cd-94a2ae2f477d.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 0xd8bd4dea4019cfa591b02c8acfad3daf156e1a860063feae9d2935ce3be7fc18. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:50:09Z), 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/TCJPJ1932743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f47ce61c89f664a037f3ed269304f11820caccd4da3dbbc884964b2453a3a. 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/TCJPJ1953286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765f47ce61c89f664a037f3ed269304f11820caccd4da3dbbc884964b2453a3a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPJ1953286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb5126406d196177cdd3dc448c02d84fac70865c84ed7e5c9d8543322f3352. 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/TCJPK2058883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6356f38e29064043a19fc7ab7027e2343edfd6d256d72bc0e0aea1fc7a655eba. 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/JPB602156794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb378441aef7cde8ed22ae359882bc5e35d8f8225fadda58e5eec5f51c050eba1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPB602156795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a690722634eb8805b368c227432bc5d2d989a89e0287427bae3fbf06c9141ff. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/JPB602156796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca65969c0dd183a4ae1bcf5c8398ea438dc9cf66e1112e2515376a06f20e9f8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/JPB602180462.
君なんていらないわたしになった
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa807dd311634d22678d9fbed31a484cf8a850195d49c9665ce9cc61b5bcf984. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/JPB602203093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7de299773df4bf98c5b1e9bf69c191af065f8bf71de5955945c5f4d54b37c. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:17:25Z), 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/JP92N2286763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93387fd439ff71b3146533b9bd81b61a7b2ff8f392072b5a352981a62e0cba0c. 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/JP92N2435747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39a5690106dce5c692e99dcfe5c0305941cff0fdc4f72dcea2a9e3b9aa2251. 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/JPG102402360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750623f5071d4652b52ee885d55e5ba6712b75ebd6452ba65c97e3632fc795a9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPG102402361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed06651216c7e6108dae4b5f0b894420a10cac7369d8f08f7eaa6345910f7b6. 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/JPG102402362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb090f9276c7acec2e3958040f879dac3dfd086965a59522b051240e2208dfc7a. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:01:04Z), 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/JPG102402363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5686a4c5e6113fc73ad8c47a600974e42c545d5db9476af35a0bfd7640540a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPG102402364.
とにかくむかつくことだけ書いた
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8b8a91cd2c934211d12b4b6b7d059b61e63848ff1cbdd4a9431ed6f2d3dea7. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:36:42Z), 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/JPG102402367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad3f41454cd882bcbdce7e01008d9a0ea930e327b33023db5e927c107f765b6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:17Z), 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/JPG102402369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba6606f55315562affaadd2b2d0f9053fb766d5940bed2e8cf560db900a03e. 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/JPG102402370.