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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b17123838948830d297215e5b0ecf4eead52921aeb0980f89baf11d08391a02. 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/84de16a0-565d-41a5-9420-8106c011a9cf.json and https://artists.proofprofile.net/proofs/artist/84de16a0-565d-41a5-9420-8106c011a9cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"I Froze! and Now I'm Dug Deeper Than Before"
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8d18f25042e46573764be84225809911fa82f865f95975b5807e30f9ffdb8c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GX3HH2361974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7a4329e4eef0e66a7b132cd56af17302ab2f10417316ebf8efbe17636e7714. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GX3HH2357022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca013221375e662477d90c0107d9d8180e44e7ac549085fb16e1f49211875bd. 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/GX3HH2363309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa1263cb3b8bfc304561479388957133dc5a77df1a39d3fe09c77d292ae0681. 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/GX3HH2335007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbf2087519826db1c2c3578cd60e63c79fc1fba241ef5606172b55592d1df7e. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GX3HH2360555.
Captain Sunshine (The One With the Turtle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf08b7ba12d0fcbecac61ab37250cb8acf604bde273f62e39632d7611e74a47. 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/GX4R52312291.
I Went to a My Bloody Valentine Gig and All I Got Was Permanent Hearing Damage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056c68a33804974f3d4df05368dd77166a6ba23ea7d22c292cf5b78c64efed86. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GX3HH2382517.