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 0x0ae63bb11113ab8b5baf884faf3e429f69d8ab10bf7d3628b6255db54b22ecc4. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f59469b5-c57a-491a-8d85-3945a3e14124.json and https://artists.proofprofile.net/proofs/artist/f59469b5-c57a-491a-8d85-3945a3e14124.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 0x0bf34f7210920dfdccb69d0f1f4414d555a1114665d969edc5e397bc503fd6c3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPG102200841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48036a0e30da94feb7958db17572681a1333da515f5354daa873c34290dcc950. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPG102200611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9782e8e16fe3eaebbc88848c90432e9d13e9dcc2594ab0ed948e86147b59ab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPG102200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93637b2412833e042e7f296fd7719a3cf241265d835026ac7cef07be97d9442. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPG102200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6abdff84b704e2ec156aa8fdc588e6a8f17f543c0d627d31343dcbd583513. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPG102200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d6d25732eaedd5fc0d92879166cf9659a84fe2094a7a7da80820ca035ab02. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPG102200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37a86f027be8cdab213f01536da7c519f1df52fcb3666410bb411725391f33a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/JPG102200847.
最近的我和我在想的事以及在意的人事物
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284465b7cbff2191d61fe3a773423dc971ba40377888bde8a395a1ab6b15b5c2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TWCC31900918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d0a957e01b25ac91cdb0b0dffe9227a92632a7864a3391b08511767d1fabaa. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/TWCC31900919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdeb732d2856db91b717cf4057b3466b6a1828386420361e9ccf42a465b9d3e7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TWCC31900927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf0dfb5ad1104f23a7a3cecae2a9b01df95b1ecaaf96532072292ee322f5eb6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWCC31900928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd400ca908cae7a69dbcaf86c2e44ac3b26ed232d99b6e512c2fd05914c7bc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWCC31900929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42a7322b799bbfcd04512fcdcf0b98b7cfcc006498b3df772fb0e2a3480a75b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/TWCC32322105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb55225bdd1785f53c6b06d345529997b808d8d1fec971203adf8b31f272c4d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWCC32319978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ce41f1d944f4cb479d3823af57ca91a6719cf9059d478815b67adeed2ae5dd. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/TCJPS2208537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e213fb2accccbcb7e0ee0535d3d2caad9559013bb8146aa700f9abc6684401. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/TCJPS2208550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f55ebbe4192f0c8f08e082e45466fce6c10391f23efb048608ff15f1a718cd. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCJPS2208599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7da152321d8e1d31a5a15154652a164cab6303e8a431271ceb6d16a9080355. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCJPS2208645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117345476ec17cb5c57e80c6e56ad2cd12d8acef2c0487d19eb31e2f60d3d050. 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/JPS802100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b1afe9bfaecbe5812f334284898286cfa24e285d93f9cea969569986739d76. 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/JPS802100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5686405a1ee13294d14119ebf31aa0180de0c0b480e0c75fa44111725a426ebb. 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/JPS802100177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79176d0e91dbb79372be178a3c3cc32ed81babe99710a9513637e192d7406a93. 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/JPS802100178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8d5c3738e4ac7757dad21a979d1fd04184c230a55bc3afd7572cee372fde68. 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/JPS802100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe415c64ae1cc6bcdefa98dbd5f56fb84dad6e5059a0072f6a5fdf87f677750b3. 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/JPS802100180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda3dcc7d3b52aff740b1b9666e4eaae9828e7004276f47e0c66bd28bf44ecc1. 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/JPS802100181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988defb65fc6900dee36f4ef8949b05f2a62e67ac4a4491faa3ae169e59bb344. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/JPS802100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115aec6847dfd48a3c2ffe5d5a9bf7b7649ca80d353c18348bf442507dc687a2. 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/JPS802100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a730337c7c3eac519a2525c5f6346a4f646756e7030bb7f208daacd7e3da2e2. 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/JPS802100184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa970a46616735649be1f890e6ed607c48d4c40dab29c18b27fedfb768a7a91cd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPS802100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351b1d241d99348026b1245cd55ed9456a5981383235857b9ce382b2533555bd. 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/JPS802100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35377f772f2e2e55498e968ef5a403e2319481d2be481d77c85a6bd8171b4dea. 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/JPS802100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13ecc30ca2ad849673e299d8dc520d33c601b07133ded46a375b1e53f60dbd. 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/JPS802100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f25db182456d3e767eab75ed11c2f84d1c16e763ac6ebbb06b1b762a7d42725. 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/JPS802100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f9237f8f20d6bb6d0f0278ba867790f726717e79e556114fd1c48d72d83d41. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/JPS802100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d020945faf4de423b2eb105b4f2dac1913c65b470e92a683204dfa6637d2266. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPS802100191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bde1f9e97beaf808c6fde4521b922acfa0b2843ecb07a54d1216f8e609d8455. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCJPS2272934.