1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1df6586df4c8682060264f702157a221101bd7d4f1957ecc7acc402c287a15ad. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b89b3556-9edd-426a-bfda-75ee75e708b8.json and https://artists.proofprofile.net/proofs/artist/b89b3556-9edd-426a-bfda-75ee75e708b8.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 → block OTSBitcoinBlock must exist at that height 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 0xa256ac2dee4ec5954edaa5792bab5fdb418d9e26b5fc4a192b638fdfef29db69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEYOK1311413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c08db1cbe60c890d0bb9913e02495a9b05ee754985d9d6977d19f1818ddfef. 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/SEYOK1311414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44460089d5774ca67d190d4c3698102523c94bec09753dfd59e53582a5c308f. 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/SEYOK1311415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2e9df65474adad1399601b625b06082c23363737a2b70b955aaea30f854784. 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/SEYOK1311419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8995c7fddc1988161148ac703f30ddb2a434aa7fb0e3bbfb87f93e533499a053. 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/SEYOK1311420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa401675c83860e5fd3c0a2c5aec137d49ec09c3e6cbdb819b0c4916e4598fd4f. 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/SEYOK1311422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab4bbc20cd3fc4bb5df220cdfa0c10c3fe25aef71aff6915a6b6caf62e0f590. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEVVF1201301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca23870432f1428ef23124b25c23e5003671ecbcd72208fe93c932dc8284ec. 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/SEVVF1201302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47cdc0491635c7ca2f8872df64ddb7ceb64180c001227544670a42c3be4f787. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEVVF1201303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e610b5a1ca5a00ffb0c20631846260317192397b171909c1009cbcbd1717dd. 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/SEVVF1201307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e12cb22385a9973493903fe6d75f29053b16e94f789edd6762dc7397b9d9ca8. 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/SEVVF1201308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee7a0bc6adaf1c239dc2ea37eac96024f331f380822e7ac147cd83a3534e21b. 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/SEVVF1201312.