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 0x9f142f432f37f6db59a346db189d59e853c7d76d7568f0d26f649863b9ba01ca. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82a1c978-bcb1-4f6b-aa11-a74ce4c02822.json and https://artists.proofprofile.net/proofs/artist/82a1c978-bcb1-4f6b-aa11-a74ce4c02822.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 0x021d126542f6679bd4319cfad50327917ef0e05a4809caf74d063df4cacacc7f. 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/GBLP42100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dde8b4c353508cf2844f15be37bb446d6126b34a24a6da4f8eaa1fec6e7e1f4. 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/GBLP42100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91420f5bfa892350c08bbe984b972f54da59d559746b40f44206e327e49eba89. 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/GBLP42100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0589f29b2449c4bdbef47b9ae4fbf5c34ae59110e01f892f9116d4d60bc78103. 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/UK3UC1400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c732a5c9c85dac7076c65b88970c19dfaab362ef97d2405401defb31c981f8. 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/UK3UC1400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9266c44fbc4c2e0ff10a5d220d724151719c6463ca38da8bffa353e15346ca3. 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/GBLP41200002.
Will the Last One Out Please Turn Off the Light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5602d0febe076f0480a1c324cef045aa00fb09a120cb211a5777866ae1ffeeb7. 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/GBLP41200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cdfed7c9358223796b0537259c4cb0e182a9de4998602245e8b2ac3926c595. 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/GBLP41200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f57ec500de34005fe3a26987ad1d52a845ef41721851b5a8bc721aa52d84a20. 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/UK3UC1400009.
Turn Out the Lights (Alternative Version)