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 0xcc8062d3019edaf0cece4c3010e400f03d5d14aa5f0114a29f98a4c07ea135f5. 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/1391d6d4-b2dd-4e8e-ba93-91016bdc9887.json and https://artists.proofprofile.net/proofs/artist/1391d6d4-b2dd-4e8e-ba93-91016bdc9887.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 0x931fa7a1dd58e8145bcc1f6ac6f128b91a576b94b57521bcafa5b1d122e3d55c. 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/VVYY32156789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f243a76f4d5e63268348998d2b228bac77b1b93846dfd0e7fbe4e2500f95c16. 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/QZFZ72494062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf49d0cc081f0891c726fc8f9317ea88117464861400e4ec64642805428a2d3. 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/QZFZ72494064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca8bcca10704fe5d231039d645bd480114b75348b672eb451bf6f51e44b88f. 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/QZFZ72494065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9d54e8dcb8ae6d2f3444ce68041d124439983bfba81bf373c74fbf48ec233f. 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/QZK6Q2300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f449639eca454a95f6002ab3788becedc08298480aae8f322ac5f7624cd78f4. 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/QZFZ42349069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9af514f72ee8ccf2a370c900b3621a3cf6af8c7e6f0c6e797867509fa5cee7. 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/QZFYX2347524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86140d2856c8d7b7354a1bee29b4fca7e268d85870fc87dc032043c5a005c8b4. 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/QZFZ32249282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc69ca4302a64ad5b9e9027c6c0065cef18cba104eb067b5f9db938f7acdde. 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/QZHN52117415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac363368f2a07552a24fe9e8c56831d67053c0de6703507009c4b7037853be6. 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/QZPLS2456860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caaa974282384f1f3ffc5ffe8886c286cc138dbf6bf45b572a426fec4d6e7dc. 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/SE6QE2421022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73959a6a9c7ce8251e4b110f1798efdce734c190851c44d10bdacc53b13f2e71. 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/SE6I32482229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9d54e8dcb8ae6d2f3444ce68041d124439983bfba81bf373c74fbf48ec233f. 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/QZK6Q2300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364834939478498f98a6d8d246d3ac006e559b35ed98beda93550ea204e900a6. 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/QZWFP2378622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ee0cb433668444539c26c26c3ded3dcd4bcff57c48d428c5b5a376acfed72f. 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/QZWFP2378623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d11e064a1a68df2f57a0331c7f256a31d61ca623a79736c60703efdb1463c. 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/QZMEP2335259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fe300d836225337e6612d2b3ef4e2e22ef14710c80f2c2ac06f774b082d898. 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/QZTAW2389476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaba2d42843fffa4f31af096d6b212d637a48b4f405348555595a73a1984b3f. 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/QZHNB2350787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b70d71611cc12c8981fda2f71e2447f9db02d169dd3723380bde92af052424. 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/QZK6Q2452357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479c77989bca60950395075d3d94fa4d8531fdf0e1aef94d10cdfee20c914e94. 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/QZHN92396535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ba972ccb67946135f2597447fac3b905e30a716ed46ac94a88227b1d8d1416. 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/QZHN72324384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e11bfe4005cc2fcb3c2b86ba3787b96ff0a9e3ed35d0d8e2b22765ca623c7c. 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/QZS652373704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9af514f72ee8ccf2a370c900b3621a3cf6af8c7e6f0c6e797867509fa5cee7. 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/QZFYX2347524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc1a75b950cddc287eb50609da0de0454a9f4d0fc51a126c1c19952b71638d9. 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/SE6XX2263176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa439dd132cfcf9637ecbb668c5b2244e1a608ffb8637d59deb20266beb64e1e2. 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/QZDA82261342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03347b9e42e13bca357dabc7aadc97be4998f36754b81b176d8ef99b2cb909. 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/SE6QE2430767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e71c3c439135822a00cb2669adcfa0f7bc33e053991aab93b6043fb684ffec. 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/QZZ7Q2432881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0728749a913fdd1631bb3ca4c51ce856996cf9b3ac9956e29a2fdc62beee8f3. 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/QZFYZ2512085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e01034d88ba58e983da0528ee3153e3086e276c558b0c4836d7bf79ca3ffc. 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/QZWFU2421806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c64a2677177846b65abeae45df5c49fcbc2d7eb3d405e2b11d0e1cbff0bf234. 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/QZFYZ2512086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac3d03167ddebf7eefa25bf29c77afd8aa08ecbb96980ccd583f20fcb588178. 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/QZFYZ2512087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679a06c102d46b578c06d5fcc6d0663ffd5690ac3a4d3defa7ebc6cf039a31fa. 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/QZFYZ2512088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8677177e6e7056d99273b4caf243f248aa2b4357d5ffdef3658a79b367309184. 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/QZFYZ2512089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b1137fc506ab14435051ee954add9e9c158831c862dc3f8de34b801ee3faee. 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/QZWFH2436855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c796c46e4154a4bb79630bd4c76f9d82e02967fc3f1d196705a3c3c5ef68533. 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/QZNWZ2536881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d747ba6286a83a308f7af307597610ec198fed8246b57c46bb6b2ddac37e7e. 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/QZK6K2562149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8e01034d88ba58e983da0528ee3153e3086e276c558b0c4836d7bf79ca3ffc. 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/QZWFU2421806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b1137fc506ab14435051ee954add9e9c158831c862dc3f8de34b801ee3faee. 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/QZWFH2436855.