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 0xf0b7318fdd5602d7362b7c22114845be6576b81caed35e22fe3912626db91f84. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c824963-1a5e-47ee-bf51-cdeb05f8e999.json and https://artists.proofprofile.net/proofs/artist/8c824963-1a5e-47ee-bf51-cdeb05f8e999.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 0xd5faaf26295a5bdc056617542fe5e5f215cb02fdb27017468f570c405fbdf8ae. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/ES64E2302275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91386ff7c4ed5a600a56d90bc47cddb6cbf8c5e784cab089e98fbd94cc6a2ab. 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/QZW9K2387270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbbc4e8b48fae929f9630b493a371d1a430ae25e0e2bdca7fc0235069f7c5c7. 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/QZW9L2319299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x419db5ea6fedb4a0852b5aaf339d868e8c583be2550c178191deb865141dbede. 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/QZTPX2326956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ac1b3fbf0462d1525b9e736545ad6b89e48b60f8ba9f7332156392b3297388. 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/QZW9K2387299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5faaf26295a5bdc056617542fe5e5f215cb02fdb27017468f570c405fbdf8ae. 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/ES64E2302275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1577fb67e3a6aaaa38b3a497d7b0cd24a7aeaf7dc3f631821aab11a83e662f13. 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/QZW9L2319301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3455c9c6fdcc87b02f1285e700859b2c674f649f9edffa009413ee27f22940c3. 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/SE5752369505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f7ef3773cb34fa49c79558c5e86c20defa0825979fb4c70c58be540c8e89ee. 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/SE6I32287922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743f29519d80528ae9195d31afe4060fc74d506477c44e425705d14d84f51752. 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/SE5752422200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29edc8d20669940f002fb2d2eda4090e75a36a1530994cac17fa5bcae136ddf7. 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/SE6TI2384216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624e2c5e0f2d5bc99a113ff2f790643b68e4543a61922c8712e45157c7811bcc. 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/SE6HN2497521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a34b4ae58d4d7f86acd96f7b0ea75df00d85b554457d07c5c539b54dc5782f. 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/SE6QE2414057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac3b8e9c505916e3d04995503d743339098aca64fd0d343ec2123089d425529. 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/QM4TX2590472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860042a7281e74cbd9fbe4974e6a8dae60960339bfaa330a43b80442629c4d72. 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/QZGLM2589369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2674c2686c9f8e24a192b904d09e29609eb16023c168c5ead3c12156b40f8230. 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/QZW9L2462831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea010fa36bf8d55e05d6ec03a9c1ba64c3ce950762ec6a525b0d35f8bdb6b4. 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/ES64E2487600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1cc3dcfe8b8d34a098c9e6c8327d23ce40b48e2c0d8196afd3be0568061e3d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES64E2469136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e41f35603c2a95e4c0d299f8cdd4c6938e26c38d7abcb9176832dd694929596. 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/QMFME2475310.