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 0x6725486668ddf81c70f4c16c77ca4405692cca985cf972e830ec4c1678f93700. 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/a3749e1e-819d-4493-af3c-d6a51833dc0b.json and https://artists.proofprofile.net/proofs/artist/a3749e1e-819d-4493-af3c-d6a51833dc0b.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 0x94a06f59c862b4e612c98976f6d7f22f65ddec08a70672060bd3f1d2a8439bc3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:39Z), 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/CA5KR2057380.
Don't Stop Us - Seba Iturra & Rodrigo Laffertt Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabdac647b726885038d0d3344277769f285c58172bb2caecd2a32b9a998eaea. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:51:02Z), 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/CA5KR2202179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d94e6b5750c06f30ed8b93a84dcc99b0bd5935ad49dd0094004f20b9dd9985. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZWDD2231250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc002c09ad574175f50d4876c5a6364de374bc2efe83ad2adbf50df6943659563. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:26:37Z), 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/ATEK02477046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b723ff1a0525b5ae0bafb727f867feecc616ab3394d7aef260669183c83f75. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBKQU2526316.