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 0x51f2d6fe1281e8049acc2d72151698ffd0c63e6bc9be0539927b9bc97a0df55b. 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/82b852b6-62b2-412f-b840-1f3619a24140.json and https://artists.proofprofile.net/proofs/artist/82b852b6-62b2-412f-b840-1f3619a24140.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 0x339a8438d49dbb037945feb8890ffef80301f9af709bd36c450cb70f4e9d3d3e. 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/CAGVU1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcd7409aed886be15cad34fe910e05dc3db09a14e2495a123daa36fe8fc876. 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/CAGVU1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d12c0f900b96ecdf41a6cdafc170f937ed5eba99a0b22324f260ba07d366d7d. 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/CAGVU1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d48a6b13984647b9ecc950fe3ddbdc029529ef8fe67d8a2b19de46871141dd3. 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/CAGVU1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76dee90c7bfcba80dbd5746cd24986d0512b56b3bd02df7da579ee6031ea925. 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/CAGVU1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2edb52e178733a00544d4783de8a82973d3f2bb543e23f61a4ce768d28965f26. 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/CAGVU1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ff6f3787d6ccf79e574bee78fb9d076eec51ef2d8cbe64ba46130b784546de. 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/CAGVU1800023.
Whenever You're Around I Hate Everything Less
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3540ba2322e9cabbf286c6da127e6fe61b7a708de1f9e55b7cd99a4ba21c271. 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/USHM21795802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c656bc03eac5b85c5506495bf8171fad97a22e74d19956da2a4ae0fb8a5481e. 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/USHM81743524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f4192d7b525e55dd2d1fb1ab05ec40306345dbcea441edfbc43796e6f7cb07. 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/CAGVU1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7985394ff15492e79be879684d27063fe43e726cdda17627f835cb1fca78ff. 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/TCADJ1766204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcd7409aed886be15cad34fe910e05dc3db09a14e2495a123daa36fe8fc876. 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/CAGVU1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43798d863b1dd75b23d8417bbf2ca2d1217c2ae684c83923f30bd096cfa6a1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAGVU1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c23caaca175a99353c184af241a467e61be05638723d79043dba84e56db372d. 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/CAGVU1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0372e93cf95dc367f3f177d4795a53bd119d95c3ca14d18f939d1f5e126a05fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAGVU1800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43798d863b1dd75b23d8417bbf2ca2d1217c2ae684c83923f30bd096cfa6a1. 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/CAGVU1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf108ad6dd5e46c5ea9fe72c61955502520b8dac3303616cddb0513540ad5c3e. 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/CAGVU1800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d12c0f900b96ecdf41a6cdafc170f937ed5eba99a0b22324f260ba07d366d7d. 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/CAGVU1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339a8438d49dbb037945feb8890ffef80301f9af709bd36c450cb70f4e9d3d3e. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/CAGVU1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcd7409aed886be15cad34fe910e05dc3db09a14e2495a123daa36fe8fc876. 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/CAGVU1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e808db7a513d92e5bded588178b4253160b5a2861a59e41f7f0261db788679. 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/CAGVU1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c83098d0270d80581fe425a9ef6ae97c16cbb7d00813890270b11160556403. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAGVU1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c83098d0270d80581fe425a9ef6ae97c16cbb7d00813890270b11160556403. 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/CAGVU1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c879783bd982ed76ffb1cc3db0ce98e38adb5ab348bacfb9820c639f1bbd18. 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/TCADU1878707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7985394ff15492e79be879684d27063fe43e726cdda17627f835cb1fca78ff. 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/TCADJ1766204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c656bc03eac5b85c5506495bf8171fad97a22e74d19956da2a4ae0fb8a5481e. 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/USHM81743524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3540ba2322e9cabbf286c6da127e6fe61b7a708de1f9e55b7cd99a4ba21c271. 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/USHM21795802.