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 0x0384dd21419d25b29227f401a0eec279c3c7ec7904d381833f0d1ff36ed838ac. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e61a7134-ef4a-4ed2-8dc0-cd72d4241347.json and https://artists.proofprofile.net/proofs/artist/e61a7134-ef4a-4ed2-8dc0-cd72d4241347.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vulture Love Presents: The Last Zombies on Earth
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 0xe3a8d1e8ad923435312d99701ac43b4e546eac3d9e730a9c188d9fb914fac361. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUM72406293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd5a92b4a7ad5701961d73ee33fe254b9d724dd51f7337a037c31f2ab965b47. 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/USUM72406302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333cd7c7a2c9b8a0d8c36202b02afbf6015b5f37b770af3311c4cfe47b1d0fe1. 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/USUM72406303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937fd554a605063ab33b9f0fba3d6fbbf3edfbf202c34dc8aa2ea7835a589fb0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM72406300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bc8b42ba0415bd9e81ceedfd5a583ba10a1fa339624e716b1c06bbb9e3c2bc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM72406301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b107f36b78a50ab2f1928825100254bdebc7d14fc928b731689460bb637b8f3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUM72406296.
Dirty South Compilation: The Hostile Takeover Mixxtape (Mixtape)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5a55977c5153494ccc44f91ba8fcff2f64240830e1509f051918a1dd67ec5c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL1827343.