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 0x580703df4e32912d49724f5ce516ca8bf6dcc10eeec751ff7f36d926c076a2c8. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afe800bc-12f0-4619-8dc8-1dc20490b6e6.json and https://artists.proofprofile.net/proofs/artist/afe800bc-12f0-4619-8dc8-1dc20490b6e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Keep Talking and Nobody Explodes (Original Soundtrack)
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 0x900f5f46abc5ccee97c236e568b75e66335b1b9fd8e585daa736880bf9054b7c. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/USL4R2164156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d76e9f37ca145f4868b5335c9f4350a1dc156eb3245a67747a9a2f6a2d2206. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USL4R2164157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e672c67161be22d09ed842cee074104d264ebe7206c006066168803ec936b8. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USL4R2164158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfffaa9c2b81fb0bf6b8acd82729df5137bd9961712b08d43070da3e5bd84602. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USL4R2164159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0752530bfc2bbc7f1aaa6acee2731c686f171baaaf7e43ac7e2e9239f3f152c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:53Z), 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/USL4R2164161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750e3e268b7df8e96a980cff95b944c7927689b2219ce9a8d740dd7e100b6f8d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USL4R2164165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa984030d7de739ee6297a4775fc7aea28b26f0ba89786c674a614506004dd621. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USL4R2164167.