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 0x76745f02efa1d4badc6fe56fbc2c28a38e25411feafde57717da2e31c14d12ee. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2b91b51-e78e-40f4-93a5-cee9cb44ead5.json and https://artists.proofprofile.net/proofs/artist/f2b91b51-e78e-40f4-93a5-cee9cb44ead5.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 0xc3838596cef9d8ee8fa197f96990427b5281838c5fb617d10358b8a7b0416cfc. 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/LTM202400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9740bed1c1ad489c7ad8f9bdac709fe6c2894bbfd35f48b7c0c046a527b8b54e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/LTM202400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fac8da384fd036871360966751413c405217afde7c7b651bd66477621948998. 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/LTM202400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d83445d2428a83984199fcba7b8a2e3ca1af84eb15cae6af5fcd7fb85696a5b. 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/LTM202400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa607686433576b2c9060f3ef174e3a29476b981f51cde04f2701244eb1cbbcdd. 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/LTM202400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5afe4a8d774f3a1d3a1c5a27e981063a4fd551966f0ab5dab12289554f83a39. 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/LTM202400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d059c0a087e1e2fa134331dbea082f724a688cb4a97d15b437b1bddd3feda51. 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/LTM202400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401cd21f390de6112acfb0ba69fae8a09d3b1fc4d7d4fd3d80462748304fc4b. 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/LTM202400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53cad301405e2fa2f33cca9d71cffaa44966cdfa26d839114cf1a0420d67e7b. 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/LTM202400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cb9cc880dbb17a8e9e1905ad0a35b59eb297a8ca21005ce72ca20682d73dd4. 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/LTM202400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71d0d3b86a90a0d99f17920b7bdc6db00357b6d09086b97c10631baf657dd3a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/LTM202400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895378f62a31c61321a4d79046b53f8d904a9c977c3291dae5ed30141d57e033. 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/LTM202400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b55d6fbf5bb4e3c4bd504543a39d29fa551e0bffa9e8fbbc8d69cc5d954c8c. 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/LTM202300001.