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 0x67b0bad772884c44de933fa9d37ee765c7c6f275b8d45138c434e5a12edf285e. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/541cb260-059c-4c0b-99a5-dcb812ec6ea9.json and https://artists.proofprofile.net/proofs/artist/541cb260-059c-4c0b-99a5-dcb812ec6ea9.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 0x11b47c4cd77a16ef4b0ac149cee4956065566ee9f16b5488c7b6303bed041862. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/FIS202300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0351d2ce9015be8c86fdd33260e6b77ec77246f140f1c3174f3a067c2b6dcee8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FIS202400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19955ebe76b2da907a9ab83c6d17d9f8e83fd3bd4e21fce3dbe8445946c4fa24. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FIS202400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea725365cc0661bed2e0ec32a71323e5b341725f649a41ed1e040a51208816. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FIS202400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148b82f52343cd8fdf01d189d1ca71d8547af6f8f93daac92621e3af4d607f60. 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/FIS202500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208a96c4eb783a99e17459e237fa07007761174bc40573ea28606a2165bb1bb5. 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/FIS202500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceea725365cc0661bed2e0ec32a71323e5b341725f649a41ed1e040a51208816. 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/FIS202400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512af3b8b4b50448ade8279eb304bbc993eb4b9ffc0c440b470d2a43054e7cd0. 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/FIS202500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44619923dcdb6d33269406798074dc1b1d0472e14fe42ceb556ece1ca1db6b66. 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/FIS202500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d4206bf890973df42c47e1e1e94cd4f0cdab3839246b62a48c7515e3140a08. 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/FIS202500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b47c4cd77a16ef4b0ac149cee4956065566ee9f16b5488c7b6303bed041862. 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/FIS202300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb99209e9ed8f9597f640f576a19c49adb966fcdb40a8efe1b710ed16b961b73. 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/FIS202500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0351d2ce9015be8c86fdd33260e6b77ec77246f140f1c3174f3a067c2b6dcee8. 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/FIS202400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19955ebe76b2da907a9ab83c6d17d9f8e83fd3bd4e21fce3dbe8445946c4fa24. 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/FIS202400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa158184a93400ecfeaa825976146f3775843e82b5c990d12dc1ccad662fe5bf0. 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/FIS202500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd195e3bfc3338fd3ff907f6093d5dc08dd8ef98ee146e7dbc56c04304d00ad. 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/FIS202300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89e7bbbf0f761836711a2a72fe0428135b83a546ef3fb7f9dbd069ae0d53cf8. 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/FIS202500001.