1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa5a7440c2e90183ba49b68d9f4b615350ebf927b5fd2b5dfaabadd1b7fd9056b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e72f9699-2e0c-4fa1-aa24-684ae22daa72.json and https://artists.proofprofile.net/proofs/artist/e72f9699-2e0c-4fa1-aa24-684ae22daa72.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 → block OTSBitcoinBlock must exist at that height 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 0xfa7c70b0c1507e0ae7b8617ed4d631810f2cc1f52e254b3622bb598803dcb587. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFYZ2368079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaed0979194f607f8dca5c5da23314addcdeb40e300e6f50651ceae70d1e3207. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZDA72379476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59668810f43394ded18629ca3727633a109f2b5a3ff1a9b703a1734898d5c6e4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHNC2312249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320763bbeec502b5944114760011847dc9385e0d10ee2ffabc4ca9ac347e4341. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2365676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa669b8c48482890b0d84d542de117dfa7b065a3ed8ed1b19eff76140aee3e184. 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/QZTBB2330922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe974f2669fd639f4d9e15aa484b171b1c73a8d31c4b51f353482858ee1cda4d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEH742402052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35daaa41abb96739b792ca368dcc65ef898c2b10e1d76ba32afcb7965de89364. 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/BEB682400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a10f7a5bdcbe71d7a5900d5a6b5a695ffd5ab2bf6ca6bc7f8dc49409d96f8ce. 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/QZK6K2440227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b32e4a3b4dd835321c7d3c001344394a81b3757d2155234a0f0ea90a77f752. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/DEH742419261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac9353f919b1778222da2ce5cb1dfae9e5fcf3fbbd42e9d4d4a33764acadf42. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:18Z), 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/TCAJL2554804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa99cf6660c060366d1ac3be95df5cff7bea41f2783677f7ccbd05d19afceefb. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/TCAJL2554833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0bbc2f2bbc216338a2db9f020202943e49e6bff49c79730880a83a4b2387f7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCK42232055.