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 0xb9a17c41d9bc1816917fdd314242f7f7ff8419a844400d862841adef6993798c. 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/7c450076-2048-457a-bfb9-bd18a617a19f.json and https://artists.proofprofile.net/proofs/artist/7c450076-2048-457a-bfb9-bd18a617a19f.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 0x07a7b301ad450e8ef9b2c6095438800f1124f5a7b04e6d76977fab739260378b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CALVP2434014.
My Heart Can Only Bend (New Vocal Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440365aea0f618fa65fe7377812d8c25a4a73171f1936c3f63fc21e6389e4778. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CBF8B2426138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4531130ca483ff17f6dd422fc744ecbc780f30887139eafe0d7e2588a4d47ffb. 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/CBF8B2462690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e68275902619b5465744e69e0f484bcad978398c0605530c4cce13cee86dc0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:42Z), 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/CAHQJ2536269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9ee5d95c589b899b3682965deb5cdc60d8afa46930800fc8d53ef04f4b1b64. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/CACWV2548193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2b61551cc0c07ccfa594528f295aafa4ff03f5f5863e0abb74160201ebb203. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/CACWV2548244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac479045509866d4629232a33b69d35d9a0c2872edf410e0f17bc820ce2dfb48. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:34:23Z), 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/CAENV2540544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da2e87e9607ca2a0e79d15aaf5e13ffa13ef36ae3874ac9a68656db5357532. 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/CAGOO2535044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2364040839cc71e3c95f529935db140ff462856902297e6805ac8819b39f013. 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/CAGOO2535048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa852f3bbcda4996a31a05a1ff1255046e4c73d9c8e2262411855c3f2a21a414d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAGOO2535036.