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 0x2ba3c5e0283d3d768ca12a3b305643ceeb20d7b493c9dacf3b055fa49a4b929f. 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/8280c5f6-be10-47a2-9331-859556edabb5.json and https://artists.proofprofile.net/proofs/artist/8280c5f6-be10-47a2-9331-859556edabb5.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 0xac06495f2acc34c902c29ae39b5d82ebf05fbcb1bf4d1abe24f560d19b2cc0d7. 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/ITDF62077024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a595b2006c31c05fec10f8e475fa2cf07da4523eb939b9f7eceb5e9fd4590a5. 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/ITDF62177166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59226ea4fbb510c253fdb71d35cc1b8b10d50971783073f2aafd7858babf3c3c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITDF62177169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2593f4cce883a3443e485286a76aee373daa28d2c4dd70582d03dc1f594874f. 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/ITDF62177170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f299ed8ddc6a85db351cbe2bad3d74de8ed636e211ed1da295ece4dc0be56c. 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/ITDF62177171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012ab134b8d12f3a35f5c37dc58698e29bf1b26e04ad594fd12c6edbe7dda419. 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/ITDF62177172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95f9017dd72569d7c46c8ebb60b310bf3e906eba9f9469d6db119d764745f6. 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/ITDF62077179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6ece8ea8a603b21823bd3e55b0fb7e89b66b4cae865f900dfc691fc887ca85. 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/ITDF62077182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3cf99a92bb924d5bd52ca6d397df9ef26ed83bbd153fc35383f7188509c542. 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/ITDF62077184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf8f10aeee59d27f2721fdc47ab6b09a33e07a7bea47723209d00564c211ba. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITDF62277053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5cda52643d52d4e9aae59bc10392f5995e5a9edc42a020cd0db1b6447723c2. 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/TCAHC2348109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c587366f9163b588f05b31153d9020ba15d43795cf3556a1a42b2f87159cd. 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/TCAFJ2113997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0722fa5b0f0fbc777faed00d0304a93ae7ebac06f2b8f250155dc6f96d064e52. 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/TCAFQ2123010.