1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8312d0b1a4bd5650b4669574891555dd926e6fef581df3696e2c300b06501374. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c77a071-19ee-4c7e-be26-c892ae4e776d.json and https://artists.proofprofile.net/proofs/artist/9c77a071-19ee-4c7e-be26-c892ae4e776d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Maybe It's Nothing, Maybe It's Everything
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 → block OTSBitcoinBlock must exist at that height 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 0xfbea49332113e2c528813adcbc2f045cfb890df8f4c6055300e905a9436d6a39. 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/CAI4L1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0625e6a53095ae0c382aef4b42bace8fd7baf6e63d1fb0ada38d1ca6acdc11. 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/CAI4L2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b19ad7a8962de9b256dbdbf61b0e76e7abd13576229e2827ddc8d22c19f63e. 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/CAI4L2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44a4ffbfd3ca9ab867f43738c2f409fce664e5404780cd981981a3c1c872aa6. 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/CAI4L2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9f22b8c9f0ef40e4cd66c135e196fb3a3264c643077f4bd376b8654153734a. 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/CAI4L2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42696a54d0027f0344e60343fe1ed9ff0368ab820fd51f6adf9d3bae8ccafbf. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CAI4L2500003.