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 0x78a4e7d0b801f705f851342434aa0352fea8ebc59e1a086ca5b5268807966d33. 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/e7f148f9-9929-4928-97da-c91335553eb2.json and https://artists.proofprofile.net/proofs/artist/e7f148f9-9929-4928-97da-c91335553eb2.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 0xc8c080cdf5af608a6a616c51212385da02d383305b8650c1a2db6f206b95ef3e. 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/USDXS2100625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e77faed640a96c97d0bec9d31bbe53b251aee5add6405f85233bdaf4358d21. 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/USDXS2102470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bbf268a7e996d547f0f55bcc3a7bcd5978cd914db2b70a67a5c756f48f7c99. 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/USDXS2102472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c76527c4f55a430aa36c84cd425dbc7ef054f92c5ab30c2258c2f2055ebccb. 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/USDXS2102479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db4ed34b552c4f115af2f2e27f5046acfd2697ededc769b4482d427da8615da. 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/USDXS2102481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ac7203d77d6ec3f34838b847a33016bb7bee0bf83bee0c576910dc2ab18359. 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/USDXS2102482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ef24e41231f68e3869ac67ae236313fe443db598714d1cf252bc6c3098cc19. 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/QZFYW2012692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19a831b3988fbd2aaf65c7f4d39b049c0ef054567ad38330419a662961c4c61. 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/QZFYW2012696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1223c25dff7ebdf233934afa85503f9675e937aeb48bf6b982c87380f9f87e. 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/USA2P2413894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92431588e23e9752fed424cefde32c24f7bd562e3889cabb9cc1d8086b1fec92. 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/USA2P2410478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b209a575aff4e25d04d1116d63829637ea082d11ef0cfba1148b58cb01b28. 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/QZHNA1957419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7707e9f3fcc291efb1cb815ef75d07d3e12bdd81abf1c6e55df99e2e7a801e. 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/USDXS2203487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7606710f02a6eb9d511f91a0e7cf54714218849e96ba58b92c654cab4f6725. 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/USDXS2203488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe253cfac8d8eb111f9cd3cbc9bbdf09243aa774e2d1a009b04b67bffa5f0814. 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/USDXS2203491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d81daf3b6ebaffaf21ef38c5817b2da7e7a6e0569af38941c28ec9ccbc57f16. 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/USDXS2203496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc198c71d81fd2e3e407ca008b712b492df35b2f68cc9bab54b1ccaf4dfb85cc. 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/USDXS2203497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fcd90fb295a48f5d8b1bb3e8702e64d7aa35ab16f9d58bdc175b6e84afbd4a. 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/USDXS2203499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb238e557537d741973bf07ac7dceed7367e2c460b0149016abe6f3778a8e110f. 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/USA2P2505975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb023a61f51c1c1159c3b5a0f08b96dd3d74b3d5ea43c32b619f4b06ddd71baf. 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/USA2P2467657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aea3e105b5a094c2d6f3f2af2cfb397450e216f04cd7cb42e60d926a753dc18. 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/QZTGS2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7c84d418d52d8e003435a0b478517b42562a2ce553a5f686ad5864403c978c. 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/QZTGS2200240.