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 0x83c7965935aeda7b5c92d12e1aafae8df70a87818c0994d3b2a28e5760997c38. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82686b36-ec26-4806-b784-9032269b5976.json and https://artists.proofprofile.net/proofs/artist/82686b36-ec26-4806-b784-9032269b5976.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 0x8cd52dc4cf41080aee77d8ba881bc86e3ecb5d796b9ada27591bb6f7430aba08. 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/FRX282576239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f30202ef616856c4b4449ec2c96e80fd13397b7ad6be7a664d06029f9376c9. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e890bf157752e36663004e93c55b84e42dc608c839698f14b51684f22198c15. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf680e44b21928e7f8c8725dc7b9d525481af49390bd53d92d3029d2ef845cc. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX282576242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5ba60c31fec6aac18af3d9aa6785f2e2a0e4d2ddaa6326cf8598bd21934e41. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddeafed26801cf9df6dbac97ddabd66205c123a5c851f6d92752c9134cbdf8f. 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/FRX282576244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5f11bf7cd87ec715645d563e35fec95cee6cfe903903327114b9a9b899f7b3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf866e4487f40e436457cc1d7f5e5c6c72658a3f1cb3565a780430c8f38c039e8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX282576246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed89d67e86322db99415330f8b95ba0d691dfacfadb82fe7f9817a77d2262c7. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX282576247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a73dc275d738d6933f3f3d5d6052434ae0f80a3d8d18ff85788d13c9956870. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX282576248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73b653746d997badc8801d540b751da36758fbb4920f2ab28b899f33fb9fbef. 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/FRX282576249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ea6c23322241ead8c51b49ff259fa12787ff282e9207b427e69c3c03c0f0f4. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e3b27f2c867711aece9392f2a92df73e4e3796a3b8f377269abb7f90cf3350. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa344a38962e725831fb9ca8970fcbd7bedaf4bde56b7a5857df9246a19f3d7ce. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/FRX282576252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff5583ac2c1ab6d1688fccabe42ad987a84f8f1ee5579ef9505ee6170839254. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX282576253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeea843001b11cadc9723fc8f40419c69452df2e1e990512b8b9d9d1da453b4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX282576255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6acabd7b572fcb172ddcfad021cbf97a3ea8eff0be1bd0f6f7744378f16735. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX282576256.