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 0x64528a9f0f2e1258b239016bd9c68840a3d2d3998f78423a940f904f721d6de9. 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/772d1d67-a280-4377-8487-f7a3e8388317.json and https://artists.proofprofile.net/proofs/artist/772d1d67-a280-4377-8487-f7a3e8388317.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 0xdc8955fc7e8b1eb2b62dbda5e46a63ab67c270795b57a02ff95988b2fa6da650. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SMRUS0063643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48ea44ee1cd9a54efa677102f60785c01d28620c0f81421c02adcaccef6465. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0064816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019371d04c7f98b88729292fc5f48c8e08e61c3871b0ab835a3e9c04ade75afe. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SMRUS0065253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c61da1b10f838e4756fa98779a0252923749eba5eabc26c5b9c378c21ab245c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:19:26Z), 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/FRX282274517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b17d3c098fb423a254f653cb24b26a9a7897b16dbf3f799e80f00fab9ba73d. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:07:10Z), 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/FRX202539861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c25ff172059645159c49ea8fc38480a10d080f583e92765cbc9b8f7a20ddc4. 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/FRX282533549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd144c4be0bf2d9047a1c144d146d8557fbe03adeb4eda45edf9871510680af0b. 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/FRX762511564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc037a1a6bac972d54e15f1c99763602e5d36fb2493cb91bd28562be44f2c61. 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/DGA052508039.