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 0xc907ee6be9fed80cf4464cfdf3a71ac1bbd54ac0dfb27f5cf7cd649deadef0ee. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07daa4da-ab18-4945-b70e-16ea76c66b83.json and https://artists.proofprofile.net/proofs/artist/07daa4da-ab18-4945-b70e-16ea76c66b83.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 0xe645e459f956adc2b58507447b9c3e8b41c185652ceec389c669c40f86b4944f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GX5MX2101860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df6bbf27682fb31cd018ace939034568ffa3b9d8a6be4a2411a11cd5079da4. 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/ITTL52210006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3914bfd0baf21a73e1bc6d999a307ba5d6b03892266ad212543d863f30c53e57. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITTL52216012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43885ec93d46fb4b934011cfc954da7143a248c91b0971e53ca7fa6c12bdf153. 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/ITTL52216040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe343afc37389bd3f5bca053e289fe8e85b3f327a8dff9d4c69cc82e962a292. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITTL52430017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a138ceebd99eba2e787051da2a1909af279624a9f2d8bc2344dc037550a72f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITTL52430041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa005dbba633338a1222c26db5514ed451f1e42ecf3824feddd2e1719fb690da6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITTL52430070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3bcef1b6f083f270e772328a0a38ddaeddfb1f8b3791149cb38d15618af58c. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:40:16Z), 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/ITTL52430117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd3eafba76870581cc166f3e47aa7cc4e3e18e0dab144a38db4a9eda3d1dace. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:04Z), 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/ITTL52430167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954f4fe7134b94396ceac7d887cba7693f478d178d9620dbf67f4d645a49d0dc. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZHN52569597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a256eb143e014b02b8f97a25e538867f3ac6a6e46b473760012efff6d9523f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNWT2583636.