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 0x3f1423a2c09fd17bc946e0ef63d6e3de2bc0bef062e52515f22542ad196d60e5. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf041484-7b00-4ccb-8ed0-6236c52ea0d6.json and https://artists.proofprofile.net/proofs/artist/cf041484-7b00-4ccb-8ed0-6236c52ea0d6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Complete Recording of Boublil and Schönberg's "Miss Saigon"
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 0x6db797137cac3bb7c7d1d18fd0edbd12460c0604abf58ed40ad1c32939b49b66. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBBKB9520101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7f732ce32fef8439456b25553c272077e3bf002223b836942718f5b46596ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBBKB9520103.
Miss Saigon (Highlights from the Complete Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b468016c456f29fa5a16fcc1a8193e35100769b019597a87b6bfb0cb89344e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBBKB9526003.
As Long As He Needs Me (from "Oliver!") - Live
Hey Mr. Producer: The Musical World of Cameron Mackintosh (A Live Recording at the Lyceum Theatre)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14212b7b60c893f1424cbd2a960432ccf51bd53a38e11566d567927333280909. 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/GBBKB9820922.