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 0x795dbd7ded11710a36d5e34158cb6b02d5657c09edfc8cb2df07e747ba7955c6. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3713ce5c-bf47-4fc7-8105-52367a82d771.json and https://artists.proofprofile.net/proofs/artist/3713ce5c-bf47-4fc7-8105-52367a82d771.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 0xfb825c673b221658066b035c35c6dcc5e6f62b84ea3767b6305173dea6ab10d0. 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/BC2GV2100034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efe90bac96c6e7595286597a6db82e0415180b2be9c8f89aa64d8ea0a5247c1. 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/BC2GV2100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3399e361b7a3ef43c0b2fe4d3d8dbc9b517154c0571c7581c95be6766f2c6f. 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/BC2GV2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04febb4af5cbb51c11f684673004255e6250b8950e189f74e58d755e0b483ea. 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/BC2GV2100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5fa1c747eb6e4e06d8556169f86d5097c75418a6d3a8fc6ba199081fda9115. 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/BC2GV2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c6b7c9aeb1ed37aa40a92f1e1b108a417193b009b9de29c8a9e573c6f0532e. 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/BC2GV2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f4619902879e528aeb243d87601b7482c35bdfe97fb6d8eb39451f831fe275. 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/BC2GV2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0286073c3f919203c5aa7652109df2e8aff85379fa29131108d8618007b6479. 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/BC2GV2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a131db9df763ef9012804a4f8afca890afcc0e8386553feab849ae6dee12da0. 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/BC2GV2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6080cb9bcd6a8ec8f0d0d1f6b5f32288b814c2d81c90af4c6b181bf8c6593f. 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/BC2GV2100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03faf6c93e9adb7ffd162c3a897dd6124443565e95527113ca8964e8f9c6fcdd. 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/BC2GV2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2591f7362349c2af3e5ed090b426ca267d103f91ac0cd36e2702af012fc093. 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/QZ5AB1788336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7aee2f259bd829a62522b1a744a4c693a53d3d7b13e1452af9f332c40fc0e34. 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/US7VG1810154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7796bdd0f905e32adcb8863b669e82258e1e0d4aab578ec7c3305ba89f6d964e. 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/US7VG1810155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300e5dc8e3aff5ec443f50577c63f2870f3799988e6eb991520465b7d5d3b15e. 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/US7VG1810156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb1ea7bb497561ed44682c94c411db7bc8373c21ab25f08f1fd74043351f423. 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/US7VG1810157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba81bbff3abdbdd2b802e62c3e5af0ab8becacc13bcb4f4811458388c4234c2. 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/US7VG1810159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe414a32047951d0b65ab5d9aa575d96bd63bc0d90aafb56ebfdb052c24f6ea63. 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/US7VG1810160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f3ca5757620de461843ea3f5b03e39d77b259c7fc45a941df44c69e3cb90e3. 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/US7VG1810161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648d0a9b95ef78e2581a91affe73425479e43fc1ab588ef70101320cd45ddf00. 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/US7VG1810162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e324ea568d4ef331f052bfc550c212c7adb10e78308e0ee3e2b8bfacd1db241. 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/US7VG1810163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9624010b84334dba094babb8225d444e638ab8495966708205f353d6a91355dd. 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/US7VG1810165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5879ab94ece675767c9ea2ff73ecc95d272018daa04c4d4d1a9d314186caa3. 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/US7VG1810166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c1c08d8d5d23520fa845379e3fc52f03b84c086d28eb4225edc68f006a2da7. 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/US7VG1811420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5267974516517e4d63e0480a3be7f8633d3b2220af13fbac023f4f9948de57aa. 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/QZ5AB1813314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b30d751ecda2a7c3790a984d4ed0270c08b01e4902b90496365e6ed5be8d057. 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/QZ5AB1813315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1e19bd40e46c6d9019ee2fda286d0f7f4ef6ec1271b02a304e22e756f9698. 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/QZ5AB1813316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c686a2a03a40ef1e1eb82018b3ac0a59d192bf1cd2bd11b73d22540c3bdccd. 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/QZ5AB1813317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e74a429f9e95a48ac952d6d11753269ecd4a32144f692c9a0e6d7b37e99dfb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ5AB1813318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be6cf879cd1341cf441481acc974c58afe6847bdc879cf3a79332e92e6db676. 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/BX2R91800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b118ee0144105db580d15e3ceb529efdb20b685afaf7bb38eb464f16ec8a445. 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/QZ5AB1797108.