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 0x2ebb1d800e8396fadce568a6e5b10d09c798860072c0a1e086b84041eb671bdf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2cbe535-76b4-431c-b4ab-2ea6793caa44.json and https://artists.proofprofile.net/proofs/artist/d2cbe535-76b4-431c-b4ab-2ea6793caa44.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 0x2dc80a52305780a1a96320227f2b5dc87e0a14ebb303210b073d60da7cbeadf8. 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/DEY472373135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e04344f4400890a05463d0051805856df842c2258bbc64bdff7bc3173a1fb34. 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/US83Z2485367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0e89155970dee42aad3648261cd03290586d8e01448831d5a06eba22059bcb. 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/US83Z2462510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a77ded7254064f9d281bfa487b69d5bd25443bef98ad694e3997c65afc4e11. 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/US83Z2458426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b8252d23500bf39df50b0a18ccbd230a323bcf9db6446d49e1876cbe281923. 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/US83Z2300336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abd0002fce802cbd757b32c785c18b02498a3cbf042de4d00eb11d09a673ee6. 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/US83Z2238829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bfbd3da811c713c39aa2c1544b5478024dcedc583f6281e8059c4dc403a19f. 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/US83Z2238830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b971b05fa52a8dd72e79a45d0bde99f75f11598b1661b98f690ee0566c8385. 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/US83Z2238833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b971b05fa52a8dd72e79a45d0bde99f75f11598b1661b98f690ee0566c8385. 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/US83Z2238833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061e6aa9e8db61f1f1ec845afcee61ea0ed13c4942b2616b6ed4099f20c1d54d. 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/DEPQ62201284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b6d88d0a7a544dbbc564aa088ae325489d5628a329b73b4e2145eedfe74a10. 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/US83Z2018719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9af84563e6199a0ba14fb9ffab1925df6c103eb818cf20c3489e5b9000053f. 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/US83Z2018720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c5444ddc6973cc0e41830a9b9923fc229ec17049fa3d15062baf18118c61aa. 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/US83Z2018721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18125f7612b40428f4fbdc537bbc30a69dad0a358c7dcb02d20b41e57dd1c824. 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/US83Z2018722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f335752411bc05e1cb11a3720e5cbbcde8da056e7e4f41d3ff7db39dfa8c05. 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/DEPQ62201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd758ebc5410a73a9943860494edc7078f6421f912d3cef053ddaa91004567209. 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/DEH742228146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b81143cd5a4ae40907e8c7712667606811a8de825caa2cd3d249bc076c411ac. 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/CA5KR2152104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d6691276ee5cd64328f21939ac477b33066b0b211b728402b63552aef57a4. 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/CA5KR2152107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b8252d23500bf39df50b0a18ccbd230a323bcf9db6446d49e1876cbe281923. 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/US83Z2300336.