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 0xf46af617edc9be2178721c488ae8d0138f6b50f9ed89cba0085b0cf01769aeaa. Chain 2 (Bitcoin): anchored in block 954004 (2026-06-16T21:01:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32594357-96de-4dc4-af2c-25c4eda589c9.json and https://artists.proofprofile.net/proofs/artist/32594357-96de-4dc4-af2c-25c4eda589c9.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 → 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 0xb3535c5e2c3a8f4e41a2dead51d19d036c96925ef69c1d10b7a6ac75a1348803. 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/CH6542136895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7e573038ce297ce9cd0ef4ed7a959ebee2f5f9301ca5332bd441d8f40fcb4. 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/CH6542136897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2941e31ecc9c246e102fcefcafcea122c32d4baae5f637f8d7f6036d94f7a900. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CH6542136898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b087aa792c59dd75e36f3a605ebc1886fa95689d83d79c4ba0fdfac58b8f3b. 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/CH6542136899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765edd6110251b2563a12fb300093ebe4966299f89c2b2f4efe2629f19cd3717. 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/CH6542136901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66212af406e9d62e1c4aebcd6bfe22e2ecc77207ab66d1b07e17bbf846f34451. 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/CH6542136902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf66a43dbcac09994936f76b39412a5731ef55098fd977982e1cf13c6163d5a7. 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/CH6542136905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd44a255f56dcdfa082038fbe550643fd969f365f62967069d9e4bcdbaa9875. 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/CH6542136907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4806e4545a4790432533954e3c1947220cc8e2bc13e09029159d04a50906d7ba. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CH6542136936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8af890544c8bb6125cb7dd557f70404023ab22716f45d0d7fffd3a9a3ad1016. 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/CH6542136937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e1a50957e6f010a35041fdc2eb143eeee3f805ae6699ced2b5dff887f17370. 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/CH6542136938.