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 0x953ba748d312023d3e8bbc3316b4c03759114d6173acadc1f8ec57c683869189. 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/1ac3d2c7-0b75-4c2d-bd4e-fb550badc090.json and https://artists.proofprofile.net/proofs/artist/1ac3d2c7-0b75-4c2d-bd4e-fb550badc090.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 0x679d6e9eeb19429c5447accd3c5a74433d470a19e8cb954bcad642beca8a2c3d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:00Z), 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/QZDA72496278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf056f2aa5ea76691cc141b1c4aeb8456385f8fc5f0fb3b0a5335d480e6391cfe. 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/QZDA82438886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26be3d2af52c080e53e3ca3fc5065cd36f57f012294cb0823fed9885262db426. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:30:33Z), 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/QZHNA2417620.
PEACE AND UNITY (alpha kappa rho x tau gamma phi)
(HARAGAN) GINTONG PANAHON 50TH ANNIVERSARY ALPHA KAPPA RHO
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107ef172419793496144cf0b0dad19fc949cfb7d40fe126fd21c6c64d3678b15. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWU2402612.
LONGLIVE (51st anniversary alpha kappa rho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2766521438de13dea8908567bc2be845f0d9fd92c202c63298d3848bea525f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZWFJ2472175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67646d843a9867145fe1c70d97af7f185e3827d26a06dbe18f36492c3a40bbea. 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/QT3EY2412076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc0fd7af663ca7141d4b21184b759bbffd1b6e82046cb652cd2e8e607548957. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZK6P2558398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96321d64683799c6dc84bb3e4b222e097735a34d0b46c216faf92f3d102e0850. 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/QZTB32583299.