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 0xb8e088b977e94d257fff8768acb1670de43278df5b4f662ed45d26bb6199449b. 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/75592766-dee4-46dc-b841-fc3ef877c8f3.json and https://artists.proofprofile.net/proofs/artist/75592766-dee4-46dc-b841-fc3ef877c8f3.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 0xc240f7c7e002b7156b8a608d715085434b75c947863b3a4fdb753fd55d0bc2bf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GB8KE1758218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48456699d579d54bf358f903824685a3532e2cfb680a4a2124308672c07dbf05. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:00:46Z), 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/GB8KE1758219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4c8badb532f24e8201d7352a52290b78a41af781da5c2965d4e04a932a6e1b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB8KE1758221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0934baf6c7cb82cc175cb83db4fee3d4e33d675970f6c7f2f0b54bcdc101cfcf. 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/GB8KE1758223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e111e61145058079dc8cc864c9155f8034ecac24ab9adc5556b051c6aa881d4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB8KE1758224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f0ecee810a2716242ba994f247d73832c47fc48b165640137dc151bac6bca. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GB8KE1759050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321d24e6000070bebfbdbbb7cfa33dc3c23706515e1533150f283a056ac4c315. 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/GB8KE1850289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf726fd54236c00c5083badbe3e94a47f70ad8648d8e097eb36fe1da302946c5f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:07:00Z), 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/GB8KE1852570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17b3436266615bc0552144294dd051e88d3ff702372c4d9b541e2989dbba760. 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/GB8KE1852572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a67e186e960483b34df8babe11ffa05a003d460c7355bd16f612856e2e4df6d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:00Z), 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/GB8KE1852578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00239ac370244182a3cb0006950df4101730707ef9135529a09999f12d32e183. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB8KE1855704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7c92ce29c826f1fec3f73290ba31ad4e161e4d1b446a0e1e3a63de15a07c56. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GB8KE1855707.