thumb|A lion (Panthera leo). Lions are an example of charismatic megafauna, a group of wildlife species that are especially popular in human culture.|alt=A lion (Panthera leo) Wildlife refers to undo
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 0x2d1bee423ed61d4c56e072891ea43567e06fe84aa41af63cb91c00645f95c1f8. 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/cf27bb3c-5c50-4c44-ba47-12e9b7fb8f8b.json and https://artists.proofprofile.net/proofs/artist/cf27bb3c-5c50-4c44-ba47-12e9b7fb8f8b.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 0xf443ab8cdb2adddc17e50e4f8eb215f88d316aaa2010fb6d7a27c99127dfa381. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/CA29H1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531d1237325a5bb0c8b1bb9ae4d75b61abfb1fa478c2768120b882eb3fb4a6a5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CA0K50900123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058877e618190d34a56e851be6817441d59b28fb70b59e4a3189a8695a562d8. 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/CA0K50900252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68784c55b8c3b8280b824f139a0f376b64afcab0bf1d34efd96b507d9f50047. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:37:33Z), 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/CA0K50900253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d89246af34d41530da5415f3f340780db32c82f2c51a383ebdcabf263b1968. 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/CA0K50900258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fc6cafbe555695871e812ff11ec918bcc80896a3f20784b85863768ed6a5df. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:16:57Z), 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/CAZO71600179.