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 0xb8ae560e97e4a84c33c297c790005b079c89eb4405bf49664594f999667a3a86. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a5101c7-6464-47a7-98af-2be58c76f73a.json and https://artists.proofprofile.net/proofs/artist/9a5101c7-6464-47a7-98af-2be58c76f73a.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 0x966e943d6ad6035ba8c1b982ed04a540c66f2112f0823bb296c1d086021e63d6. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:09Z), 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/QM6N21424960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf246a2a44dd5007d728b9c55350641b192be31b26e58de7f22dfaf231683cf50. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N21424963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf553ace83db18ec1e6e0a5c060e7740bf1d0e9306543b61bebb9dc8061850d6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6N21424964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16afbeb154c2970ab47da7ac33183cb1c8a5f86987885920264a35bd7b2dcbf. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6N21424965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3034ee765037101d1d96f25225162cfa1901bc35c5cccda6209c765312f974. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6N21424966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cd7d263d6dfef13c28cbdcc3694c2c0e049e9ce48f77288e006353d8158d94. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM6N21424967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cb137689419af8c3a253674706a502caa98a1fcce423bfda0a6f167426083e. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/QM6N21424968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7d0142c8f77e4312964bed725da748119b68a08ff2ee73cf199989baca2e87. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6N21424969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d48d0bd8666eb374348c08d2ed5f04c5871ca98d0e67765ac426768096918. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM6N21424970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d0d6bc7e0f7dfece7aa3d4ad7e90e0f7fb4a161e236bf43b7bf74d50860510. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJZ2345129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d62fbef4126591af06579b553f7efd90e83c0a0385d81cb097f5d20f91dc7c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJZ2345130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293a236c57785f96b024ad49b9ac7ee1fd13c4f7667825ecebb9f7905ed75b7f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJZ2347831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb48d6b49fe28bd44f672c5d2e100dd8561d06f4bf80a28a745635830f8cafa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJZ2347832.