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 0x34a30f816fb904ac6136a76bd2fa63846252e3d31f7d6783a7d2498b9a57745c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b80bf05-58aa-45fc-91db-25bf1d5c1415.json and https://artists.proofprofile.net/proofs/artist/6b80bf05-58aa-45fc-91db-25bf1d5c1415.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 0x63c75671ccec4f90366f9073f86fbaf87c5f6ea2492842c718bc5b59de766bd0. 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/BXTB11900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9001307920573c661424ae76f7418a1fae9844614a0e1d7db9f64b888022696. 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/BXTB12000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cba8cf2ca6dfa6caa52b94040e00ad46f53a89b12de60da7f35a5603972dee. 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/BXTB12000224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf69ffd37f6aa1473d81dacfe825131ef1b1a28892f87497bfce285688388b6. 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/BXTB12000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe0ec5041df28052af6903a1486e150c5d80f0227439b9a62f5bd5ea5de58bd. 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/BXTB12000225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c178ee809b7266bec7cbece590b4beb348b38e37e94647af81fadc4e1bdc9f. 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/BXTB12100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9001307920573c661424ae76f7418a1fae9844614a0e1d7db9f64b888022696. 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/BXTB12000158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c75671ccec4f90366f9073f86fbaf87c5f6ea2492842c718bc5b59de766bd0. 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/BXTB11900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcdebc2f1da9ca1329e4480b698d5eeefe3502cf5fee8f4c537a4d25c69995a. 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/BXTB12000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc397f8d8623359c86284bbd2fbc492eccf22423be4fdddc5c407befe90fd85e5. 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/BXTB12000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c178ee809b7266bec7cbece590b4beb348b38e37e94647af81fadc4e1bdc9f. 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/BXTB12100278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcdebc2f1da9ca1329e4480b698d5eeefe3502cf5fee8f4c537a4d25c69995a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BXTB12000198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf69ffd37f6aa1473d81dacfe825131ef1b1a28892f87497bfce285688388b6. 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/BXTB12000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc397f8d8623359c86284bbd2fbc492eccf22423be4fdddc5c407befe90fd85e5. 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/BXTB12000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f0d610e6eb7e838ef9e88d1c2a0a15ca170aaa193997c153c3597ef2c6d49c. 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/QZGLS2095711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4bb6df4d9be0b6c43bd8191501ee1d0ffeb94d2000955a90fe6c0002badfa9. 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/BXTB11900177.