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 0x5a15eb5a88b157508d671877a2343ebb9d57ece64fe37cfeaa19beae6ccec181. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48f4eea3-d5db-41ef-a618-65836d25690c.json and https://artists.proofprofile.net/proofs/artist/48f4eea3-d5db-41ef-a618-65836d25690c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
collateral damage (i just want to have fun)
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 0x915fded0867dbe7baa791b40ab5b540dccfaa6ad7e1d93cef71f5fdaf013c735. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:40Z), 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/QZK6L2554309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7977e62f0d1aa46ee9244ab4c84a048eddc9bff9b32bbd3609c1c7a34f147439. 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/QZK6L2554310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d36953ac2ab3e35ab50ecbf9493fea3cac29921847f69007bf20e01fe6d714. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:14Z), 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/QZTBA2536695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bed0b3d957c1c012952c87685199d8de28c0ffe8692ab08540682d7d2f063cf. 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/QZZ7N2598689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1821772c47cbc8d8c79cd4167cf0ecb693d6aa7bcf8eda404d9ff7de27d2f71. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:55:53Z), 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/QT3F42569954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a36a392f2769f68f32b1dd159eea43c48e162ce545253528c56a02fd849be1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT3FF2550579.