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 0x2c5fd1d569a10096103644eeb6f0631ce934378c335a45dc2606cb9ed675d3df. 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/481ab6cb-b5cd-4e4c-aa7c-ceb6f65359c3.json and https://artists.proofprofile.net/proofs/artist/481ab6cb-b5cd-4e4c-aa7c-ceb6f65359c3.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 0x2621e1a3171abde15210a271ae1976b22173b2e96ef14699dadb830895d2ad9e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G2235979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63e2b5f5f00e8422703b353058e849320e613bbaca8ced17de5e41c72aa3218. 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/ES71G2238261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f9e10359f948d084535db801886c79d9758fed55c733409abc1542969b0983. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ES71G2248164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c5aaee5ff13a0f65519d2cb4996ad7a5730159e3310b4e71df3dd0b1bccb02. 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/ES71G2248165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f9d4e72459935cea87e194ccd9018909da505c634f1e7c37a07fd82b610908. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ES71G2248166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d428d7d4fe69e55e8d05221da4f3b2b2cf64234a56131d8421f11149347ea0. 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/ES71G2248167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97173db598eccc132f417c8b463e337d80430cadf6027842b247cdbfba3242e9. 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/ES71G2248168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b2949cd735ef66e6e0d9dd0199d9a0c42cf63ad77896e729da5d5ba367e0ff. 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/ES71G2248170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe832841cee654ee1f72af767e9b6c21748dce31012510570b0da9e3106738412. 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/ES71G2248171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b251298ce7dc8068a6e9cbcc7f8732373d45cfe1a251b694bac8bdc5860aad. 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/QMFME2289108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63e2b5f5f00e8422703b353058e849320e613bbaca8ced17de5e41c72aa3218. 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/ES71G2238261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a7997d61b8758e2af6ff17f3f24b0b95b17083fd738f17681e6a667529511e. 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/QZGLS2282527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d709e0c11af22170db4577fb153a5685fcba538c2e357251abb8d84760a8b4d. 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/QZTVM2138380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84df1a474a77bfcf9cd74c5f11679d3cf98664d62b91536e955b3e65bc4d2c. 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/QZGLM2372856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11c7ebf8705d65e332da69b84ad24afc80f7a410c21509e4a3979d17181f859. 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/US7VG2348985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4850e0dbe74aa47f2021549ecda7e8b6ea2109882f68a0db5d3438b2d6ca26ee. 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/QZNJV2255104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3743a4e795c5240c98701db30a803f179725dcc7ffaa1884326743027ed73d. 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/QZNJZ2111479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c180a69ea9c85066b2c25092042324ceb78e86de25ff07f7ce676123f1bd9b. 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/QZHZ62195748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a130430dc1556151565e21681b067d5f5b74b4d6a63eb7119952cd8c77c7c2. 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/QMBZ92194798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc850bac88c8b2a0e8b87646e6638b15fe9fb6fe40a78ac7f82e63ad33dc59c3. 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/QZHZ32193297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5503beddba262f2937a8919d661c04b3dae625eeeb5af22ad4151a3d3903b6b1. 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/US7VG2154611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c48acc8c9f40217b2d81165f3d72d69da7243fdc9687a666df7a8ca47ad889. 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/QM4TW2152207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be2bd226af852205b8056e08fb62a6359b101608fc135b38c2406abdae97589. 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/QZ5AB2166927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8933704f0301c12ae93080056ec08fd1fbdb694aa2b3dd6acf77d629e94a44. 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/QZNWR2017907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a9c1dfbead871dae924c7919605a41458b5736615553cbdfe41628d7ade099. 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/QZK6F2026181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d15979d8147438129d065a14a91cc4c9c00f3c1d6022c085184399dd5e8ecc5. 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/QZHN92099496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340e3ea91f28a69e0618f8587681279eba74ff577e0654dbf2482aa1fcbecd7f. 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/QZHN62053872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09228af26ed46a2d22fd7daa539444357232cf7ed92b86ae6f34d42c6f764cba. 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/QZFZ72015458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96f2d009dde784a07b894696992554157245747ca4f06445bf22b4e00053a27. 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/QZFZ22091960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8777cd843956e0c10475c3ee93b795b1c9dab88f4799560ad8b3676a5c4446d1. 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/ES71G2500882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b251298ce7dc8068a6e9cbcc7f8732373d45cfe1a251b694bac8bdc5860aad. 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/QMFME2289108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b354ea900d2792b3b1f6b65dcb48a7ef62ded6e32a427803366f96a8e8111bf. 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/ES71G2106284.