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 0xda32de9bee73478468995f1b0c65414c5edd22b43c1a11f007e17be55209b2ce. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbe66596-25e9-4602-a139-aab56e92b43e.json and https://artists.proofprofile.net/proofs/artist/bbe66596-25e9-4602-a139-aab56e92b43e.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 0xc2e4fabccc699511cdf0d8d3756910a71b4c145a15f0522e72cf3c1e32459777. 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/UKGZJ2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e4fabccc699511cdf0d8d3756910a71b4c145a15f0522e72cf3c1e32459777. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKGZJ2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597430f842086d1fcd53d7e9854fb03da4909da211c0d1b51ab36b4a73de5eb9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UKGZJ1920080.
You've Got To Pull It Up From The Ground
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4811ac209d33ab26f457ce694424b4a0b3b9090c394db7647079d8f07adad46. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USEP42160003.
(If You Don’t Leave) The City Will Kill You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd1fa993e3b24fc1521d2c7f324162320c73c7c73acc3b06e8585e871a2339. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USEP42305006.
(If You Don't Leave) The City Will Kill You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99fed02a48e6ba2c2b89e16eec52ff34b4817f77b5b9c997d69119ad19ecb38. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USEP42305008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224081ae04b61a346145a21d2ddcdc06c9dfb6269ebb6905ccfe1db9b69faeed. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USEP42430001.
Never In My Short Sweet Life (Makaya McCraven Remix)
Never In My Short Sweet Life - Makaya McCraven Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40710428926c51d32d850e73aaa52224534a9cf6b384f915425193d76e36f242. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USEP42430002.