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 0x9dc95b594c19071f83a949c7ad9d4f1caa024717749dd1f6cfb5a9d96f5dffaf. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7259c3a7-cdb6-45c0-9806-f1fbeee8be3d.json and https://artists.proofprofile.net/proofs/artist/7259c3a7-cdb6-45c0-9806-f1fbeee8be3d.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 0x5c231a3f1fc9c7e69ad59f0fe0fa49f075ff31840d9e2df279044398a5fec781. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USSM12210597.
If Love Feels So Good (Why Does It Hurt So Bad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af97a8869d5fa29739a7de6886f51e7e0ff950224532538aca1cbf9ff6956a8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM12210599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078a2afc703957a851d29987ec4bc169fd519da63bb449d9f7c8cde89674af8f. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:26Z), 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/USSM12210600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a5fb566413516d12691a5e9598d49e8310db1339b01dc195d39a14d69b32f3. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/NL8RL2323340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1955cf5e89f70a3a978a373affd02740357fab43a3fe8c98f11d75eb8fe449. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/NL8RL2323352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f45cf69e66ae34e9289b97afac9b49713adc0b54851ab24bb178e6c478f63db. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:14Z), 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/PHO010500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f45cf69e66ae34e9289b97afac9b49713adc0b54851ab24bb178e6c478f63db. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PHO010500018.