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 0x29b40874250a1327e7e44a2338e6ea2b166db86257233f01a3691373d4d7d802. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b831803-ae96-42d7-ba64-db1bbcf0ed86.json and https://artists.proofprofile.net/proofs/artist/1b831803-ae96-42d7-ba64-db1bbcf0ed86.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 0xc0d870b20599a02a20ba04a1c5aa11fc4e1285766fcb739e6d8106c646890e37. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPW462314051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25325f290d5e5479f7c875d99cde5065284c4280f981ddb21d45e733e724544a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:22:38Z), 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/JPW462109367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b0ba555836f794c1bf0f850c47918f952dde0e7ba5349d33342048f1d49ec2. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:42Z), 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/JPW462309428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9e3a24f59be6780bb0a1619462e8d323a7b14c7f5c7b4899ae9788769b17ec. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:19Z), 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/JPW462309304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820f889578b0a17c690539fa429047b435dc54b8427929b25e1919f3950c9c80. 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/TCJPO2175285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d657e64dc19ddee672837ba8aa81c4da25ee0223d0b1cb404c69c5c244b4068. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPW462114435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f5ce922d416a77f2ab457a1b2bf25f7aeef60bde7863fbac9fa40ef60f73aa. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/JPW462114434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237342b449f14b26f3a4ac0bb3bb7d1accfc31bb088313aa491aaa1ee6cb4d9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/JPW462473517.