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 0xd513eb9078b21af6d94cbe972fc2ce9b4eaabfb07256131cd51c05900e5574a2. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d5beaaa-eb54-4045-8ac0-06e6544ca751.json and https://artists.proofprofile.net/proofs/artist/9d5beaaa-eb54-4045-8ac0-06e6544ca751.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 0xa5e7a7fa7d0bddd4e9b5fef25beedca2f620febaac0d65211a040cd33dd025d6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUDD31403001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa926e320d6dc41b8902acdf660181da1c7aa7a0b9496b937d90344fd37a95d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/AUDD31403072.
Girl, You'll Be a Woman Soon (from "Pulp Fiction")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655120d0160b1e006014576f13f12363ff722c010fe2fc1729ec6724b2d1980d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:03:43Z), 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/AUDD31403025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff2172f6e3b2bd4b1fb9bee64e3dd89763ac9f4f28d55a209adc820606dbcd. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/AUDD31402955.
My Love (from "The Twilight Saga: Eclipse")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5c2173a66cad98ae7642c3c6b2a0ae5a76a27680b43b69cced7cbafff76fb6. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/AUDD31402959.
I Want You to Want Me (from "10 Things I Hate About You")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03803e1bd1c648aae56a05491392fd43b12fff745c940acef7ce735ccaffce24. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:00Z), 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/AUDD31402977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd2aadb889cd0df328fb9cf47ec2ae2040996fbd3ed0ece3317ea3e3f15cc3b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:03:52Z), 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/AUDD31402982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaff773bb7834e38efa8e495c896448042756dac612594dc5ca95206794ecb25. 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/FR3Z81600316.