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 0xaf56ffaac703a935ca2d5666478b6fe4ac778a81726fbf56a2243133c490781b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26eac9bb-6477-4a3d-b162-d1ecabe51077.json and https://artists.proofprofile.net/proofs/artist/26eac9bb-6477-4a3d-b162-d1ecabe51077.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 0x8bde43e9f627f98f1769ecfffa061a76aea1c388870a7c81de3c2d964ae5a7a5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:35:51Z), 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/ATR981234741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6304ea2b2ca48ec32d48cf1af06a86b8049471b86a793d3b90b8440e1b8e13e5. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/ATR981252052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ec3d87d2a7427b3e82211bbe86037053063604c3c518d256cce9ee987b8fd1. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:58:59Z), 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/USZG32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de08700f44f8f89f0ef3d36d40982b9b4b02fb2917c4de9825aaf8821d807d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USZG32300007.
Bob Marley Had a Shooting Range (2023 Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761fb5285564e5f32177c16320722eddf3ff0de689472d51aabd0eaf43f4c18b. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USZG32300016.
Burt Reynolds Once Told Me (2023 Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d10c468a9eaab236fa54f729afb3b41351ae820162aa155afe7ed70df2c0648. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USZG32300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca671fb0f05f72ca39e2a34a8caf66ec63df48cfdcb592e8746dc1dcac4c9d5. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/ATR981321399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28223805be793389ebe16f0a2e0a684173eec2546e4c9a32b5e1179512f848a5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATR981345523.