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 0xd9a57ce7e931041cb56601a56f4f64b45c91d7110a9cd6fcaa74bba6bc376b7e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edc90c5f-0373-4eec-be8c-3d65621b9254.json and https://artists.proofprofile.net/proofs/artist/edc90c5f-0373-4eec-be8c-3d65621b9254.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 0xcdf9e1e5349e375d76cf7e44aa8930b5ebf457f8e18d3e7703cff89a91fb6ed6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0H2308217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279b156d4e1a11fc50360733d715ddf085093fac056d80c3cd0b416620b0219a. 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/DGA0H2308218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5099e62b82d654adce58f970a93b5af1f5e8cfaa2fc39aae15a10b98932cda. 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/DGA0H2307090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b3dd050137eb11e073413df83e7dbdc8d12c466c470e6bb87d8482099abfce. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0H2308219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb96a33b5ea4ac913b831a89cbd247d6cc879fe67a60c1c096be885ccda94188. 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/DGA0H2308220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f70b6029f60abda8839873c1a82e08acbb12e512e9d12c2699c7da74b4c6b5f. 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/DGA0H2308221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd8f0fdfffa42a311aa4451bf9eb058b18926d919f949b1dcb2b205fa3c2d7a. 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/DGA0H2308222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182e987012a0ce71ab80473ad50c4129f3e78ad77c3ad3b8f8f234db175262e3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0H2308224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae077835d61aac6cb8db8d57c3ecf2e85e310e3310cd860b1d4845493a0103c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR2X42227063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e56e38ea27aac42dfa88f5e1964cb31915a324c67df859d8410ccf4dbf0a7ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S2201121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf318846d1a0d0095efd1489182d08b7c0dda86014215b8b7c69e250f6293f3c8. 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/FR2X42208809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c5102561b526b065370d0c53c1ef49938ef8fbd8ece26b78209a007ca0290b. 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/FR2X42227064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48fe6a4552494a34e461c74bcf23630831b1e7a8d705461db5ec6886cb7d84c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR2X42227065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a7dfdddcd4251902ae244f7e13b33b5489ab0114b4a32cfe87540ad1ab152d. 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/FR2X42227066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d941cf88eacf324c4ce26c53ec645c6ef079f7cafcf4cb9fed011046eaa81b. 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/FR2X42227069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3555429037ab09b3ec39925fc3e36c26fa3a6530856692670a66f9c61ded2e7d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR2X42227070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf91cecdb4028cbc7af3216f5142b908b44d851aecc013159df599a38273fbd0. 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/FR2X42227072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabff6218e092bfd9e6cb6e6224a21fe71050b10a0c215f62d90eaf6fd7bba4e8. 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/ITCYI1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf14f0a82a0b725ac6e1a1de842df87a6e704537cd5718e56596a631e285c7f0. 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/ITCYI1800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe678bc3e78704204a9d899a5b73befe7d1bdb405883e85ddb325c782a6262aa0. 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/ITCYI1800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda835989cece1875494e41d97c142307087cb301d18d307687bd60da14a54206. 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/ITCYI1800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1a3ff613ec49f55bc4026a30b04ba56e3b260634a8beb7e2f89b8add8f17f4. 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/ITCYI1800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0365d35dd9a02cb741ca46f1378adf0af7740bdbead980c274d0d71e14ae656. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ITCYI1800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91cad0839500140cd4ce10322f871b041df54f8ce29e2b9977574ace7c25b3d. 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/ITCYI1800207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e9b37955f4c85469a01594ee0036fec3bbf233c0aabdf1b3fb48071863e958. 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/ITCYI1800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312756cdfec99a1578257d84b6339b6aa765634013e28695928538a8e0867373. 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/ITCYI1800209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1f47ca9e6effab886c0f8e86d31493baeb5267aced0f7485000c5cc5f46e43. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITCYI1800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b138b06a8653c901f6777af7ae65d18c7565e37b50a4c394a0fdda78b820e. 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/ITCYI1400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c02162262e557b0d1fff8f203de2b112a97e1581ebcbfc76815070d7db1fb35. 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/ITCYI1400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd292a066726a8611a3be7335006d2ef871f35aa00161d18ebb1fd99ee48f9589. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/ITCYI1400103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adcd9bccb436fef8da2f698592e9fbb3cf91309b3afcdfb53b2ee69cbebc7bd. 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/ITCYI1400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf139f7ba2fd7da79f9dc8717522f351c7e2bd41f97d362b95ce076423818813. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITCYI1400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae96a811204f66b15ebdb986110c6dae8e3127b94f4ed6d09d7800bb988c8524. 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/ITCYI1400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279b156d4e1a11fc50360733d715ddf085093fac056d80c3cd0b416620b0219a. 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/DGA0H2308218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5099e62b82d654adce58f970a93b5af1f5e8cfaa2fc39aae15a10b98932cda. 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/DGA0H2307090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e56e38ea27aac42dfa88f5e1964cb31915a324c67df859d8410ccf4dbf0a7ef. 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/FR10S2201121.