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 0xe08a3c9efee82e34c9fda5f585900fbde17b467e45ca4ae14a9510569595521d. 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/7d0cbfe8-1396-4c1f-ae59-2f30c5393b2f.json and https://artists.proofprofile.net/proofs/artist/7d0cbfe8-1396-4c1f-ae59-2f30c5393b2f.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 0x25c9169b1291bae3235c7873235f59419262edb25ec9bed32e77ebdb4d7ee3eb. 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/PLH511200743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89dc6c4b9268d07219f36e0cf2a7b1df71841ed597e5529c13637afd60860b65. 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/PLH511200738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d361430b0b0e4678ae2e51bb187c915f43be985e79c320342768eeecc4bbc07. 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/PLH511200742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9711dff0f051cf14dc3e8698bb36168370397bf229e82ea4091c624db92c6743. 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/PLH511200764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ed7e80af3906fece921149728afcc2ac883ad7e2d224cc49b55eee2b167d9c. 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/PLH511200749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9492781d7ef14f8880ba98c8f864cad72116a644745265ea4a181abb9f7624. 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/PLH511200753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af545e67fd67df673cae68505c3ae9b3eaa810d480b14269cfa17f29098b36. 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/PLH511200752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1a303bc18bffcc66ce5e1a6a41a5e72640862c8552094accf2a7e9e89a5349. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PLH511200724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a93a90b7884fe7109d6673ec5efc565bd262191edea513bc20e06767fa4f7e2. 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/PLH511200725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c19bbde5a5801ce8fe9b87c46049c487efd61c7e3de2d1006d9cc6a2d4803e5. 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/PLH511200726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3323ddf3384d7ed02ddacc93c10b48da11ec78d9f2fd5f7569a45fae1ccf04a1. 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/PLH511200727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703a5d62e4129a72991293d33f00ecf0581642de83904e1a6c9127dcb3e0e390. 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/PLH511200728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb64778f4291d296ae2712b5a09e3bd36ee8cbe93998fd5a81b9ce0418ae4335. 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/PLH511200729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a8ee567aa1ea9ec9cf81d3b64775eaa5243ee6e79c53db571550026c52a2dd. 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/PLH511200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8c2c0a1616bde6b05388bab499a25b1dfd6448ae7a6d80dcb85ae2a92a1c57. 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/PLH511200731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d7445539f4a0b3fb66b057c648e0aceb5b97bcba5a212747e3cd7c8da3e1ae. 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/PLH511200732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bc4803bca49b1a25ee506595d7094090884b4bbf48652be48ba6cddf643afd. 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/PLH511200733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecb91a54192852ccfd3d0a97fd38b3a7584affd352d7ae93ebc65a2bde181f. 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/PLH511200734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5876623ac8c8f4ad7b23cae67f9414f9b9605375e72e70697f2c5d87621708. 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/PLH511200735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84bd066bba17d3f96ad7fecccb63201c6897dcb945d99866386d021fa77178e. 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/PLH511200736.