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 0x855f6dfabd84ae1b6f9afbd10ea1c293529ef92daba53dce7a6c81c6dd6dcab4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25793757-46b5-4a75-9a49-80f6686bb3af.json and https://artists.proofprofile.net/proofs/artist/25793757-46b5-4a75-9a49-80f6686bb3af.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 0x330387ea12425954dc1447bc3b83299fdf33ecef59fb5aabc5b286842a5ce79b. 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/QZHNB2363530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32c4e36bc764149ca57a0d5771a3f999b2f1d726aea432f714f41d6820254f8. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZZ7V2402981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70600c5a9c6b706e73e530e379dbae6b71610c6a1299245136c5bf721ecd5c42. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ32500764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3214c8d6dd3a1f019d5dfda914285a27423ea83fd7cf719d987f7e49155af7a4. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ72506945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3bcaa01cda0c56511545ba480bbabcd4ffff6aff52d7a0f0bb7cd98533c304. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:02:46Z), 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/CH7812534811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f40ce69d637260a0bd98c8c3eb9a500b727174738fc031b7bfa83297efe617. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTBD2548602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9958d589077e0856b38067ed4b0d8746623ab081de9ee54491a6c9259c11324. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437daf3b846536669719dc5d1011cdd322f9ead6aedae1ce73d1a199ec738abb. 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/CA5KR2398093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732d69ece9d416212478083f5a566e48dee89cf97f3bf63c41f8ef626dc98d02. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX92302965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7915eaca51dd94f31a9933b4bf9a547c03581f22eb10e5b9e502b1287a798f7b. 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/USQX92302966.
Money Calls (feat. 2Rare, HoodStarDotty & GE3Z)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d12246030d4c5db16dccea3337e6983279c4cac4a7f25195b8d25996fe991aa. 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/USQX92302967.