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 0x1251ea10dd1168af66135e50cb122d8f2b2252df00511d30872db6c787214b96. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1451da61-153e-4222-944f-cc02a9ab8ad5.json and https://artists.proofprofile.net/proofs/artist/1451da61-153e-4222-944f-cc02a9ab8ad5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I had to fight my cousin at the family reunion
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 0xbb956fb5055d444267d538c4d8426b2966367dd9228493e0e898b07df2e61f51. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:25:48Z), 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/QZWFF2323984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553d3f123f9a4dc62da7428d08a2f8953e8008e4483c6361c4074445d0d4fd35. 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/QZK6J2480976.
Comrade with Benefits (commisioned song)
There's A Crack In My Motherfuckin Stovetop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573dfda9c64bb56fd811633cf66db2826da7f8e7958cde261c4db97584e15727. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZZ7W2482912.
Eat Your Vegetables Protect Your Testacles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eedcefc27e410d36712bcbe25070b52ee3cf649e9984933e35ae5ca816862f1. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:35Z), 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/QZHN62559295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fbb4682b564ecda3a8a106f3c52e9dc5069dbbd8698d8e3654f593606393fd. 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/QZWFQ2502043.