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 0xb5b8d12d4ce907da1da8e1b64116b95c728094c9b85a32a0a516d1832bf948c4. 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/971c8c99-6bb4-4cfc-b6e0-cc21e9aa998c.json and https://artists.proofprofile.net/proofs/artist/971c8c99-6bb4-4cfc-b6e0-cc21e9aa998c.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 0x411c894846bb64dbb21296bfab183ac605d21968b099fcb70ed23923d4b853f6. 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/USCG62100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f75e1b0e8beabb688dd328686253a0efa42eb61bdcb3a0e79c5a6e5ff54530d. 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/USCG62100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5721a6259943cc2cb2dfc0d6152a92c392a0d4e2c23dcaeb0b5dc71d5a3972b8. 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/USCG62000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ba856831faf9b840d55cab5f2cf8f942f1b351881882d2ea96ba420b9439f3. 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/USCG62000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a16198a8d60829feb1de6e3a90af4f1e33683435490a0bcfddf04247f2293b. 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/USCG61900066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30696b5470d6abdd2a0817982d3b923a91cf9859dd048c917c997897b6f04edb. 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/USCG62000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5685e29d3a405c81feecc37aaa8bf1855eac9de4b0f86cb25a096279b1b5a9d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:19:00Z), 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/USCG62000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a613ac4de3c0f2fa514c65923157047fd166e17510debff2c522b166b8bbe3. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USCG62000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd754b6870b092b74307de69727561aeda367e5417ef48830f352c4365f00dc6c. 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/USCG62000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc906e1b6b884e345042f337a893a10ea199a2871643cb8c98ec3b72e85c9ffe8. 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/USCG61900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d4dac485786b785964a60d40198d08b13933eec588ffc9ba2eec95efdf0aab. 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/USCG62000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6001f5e7c389ec003a7131a4c20ff787efaec5a18127e59d346ca21474088886. 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/USCG62000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405d14c260c8963e534a8fab8a1efcffbb2fa3f8db0644ee8ba7dea44154d34d. 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/USCG61900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3db76ad47652abe074abd61b7801a779423493828a3036c3965b3596b86d1be. 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/USHM21660504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfd65769eadd802188063b3cfcfc17deff0fc14d9969c8d873f8e6d08e598bf. 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/USHM21660505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b457cce1218968b762e9524fc351b5af81da3c916c0bb5303adeb448625ca5c. 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/USHM21660506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b7a35c00d40db4403af90427379367a58828d6c6d6424afdc5bd5f56253827. 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/USHM21660507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e34dbc22687dfafdadd8b0ebf4ff11f4e38c05b2f11ebd4c3980f10ead757. 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/USHM21660508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029cf35b638d5d440a1ab85fedb7714434e2800b86afba6f381fd52b7e81892e. 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/USHM21660509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1700a0bd98936b980a86f445deaa3f7caa3981801d7c54f00e1f50f759714ed3. 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/USHM21660510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec83cae14d1dc2a97150e444420291d1d327ea11acf4ea85f60bab68e447dab. 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/USHM21660512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725cc042d6a23828e8590f0376d103641d3a92cb50d526d8f47d33a43a7a5c14. 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/USHM91325933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330b65aa64be61eb32b363931f0bc346582e2ef5ceca6ec4c1788498e17ee52d. 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/USHM91325934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e46fec8f672ff64bf49b01eb2cb81a98d5d1efcbae7428c87d621539c05a35. 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/USHM91325935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846c7fd6b6089650123f8f8625e11d7510208d5f348dff3bf9dc3ed2741eaad6. 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/USHM91325936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955bd97d7831a05c471a3f09be35d4a822bfc89b87c24a502dc5a781d64778ad. 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/USHM91325938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe337ca136ffbcece4e23ad1278f43863b22d731ab969c46297665a6bacc84d5b. 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/USHM91325939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41150a04bc35ec6772625168c07d3a53faa4aa838b53ec3114d44fd13602d52e. 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/USCG62100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf12f18d33af4cddeefcabfc2714a41a648d416a4cd450b9c393d194586a5518a. 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/USCG61900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc906e1b6b884e345042f337a893a10ea199a2871643cb8c98ec3b72e85c9ffe8. 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/USCG61900006.