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 0x43694343a9bde3fb805a32360fe652ed0b4bc22661c95887bb3712d323e11738. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df363e38-94e1-4e0b-a2f2-df4de7df52dc.json and https://artists.proofprofile.net/proofs/artist/df363e38-94e1-4e0b-a2f2-df4de7df52dc.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 0x22079d826d26d3def4efb59ccd7f70cc437da990b5f55bf6b60bf005ee72911e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPF702102401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2118adcd78fbd1cc65033545f29dd096ede89ff728ac8ced8117a374126271fd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPF702104301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fe9876d87fdb6a8bb12b772a324ac14db8bbb32056961d1a39f60698ea7613. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPF702302201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb25a3adbd79d44d2854bec5d891c25679c3d5c20d6da32cc32eca71be6cf54. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPF702302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae1f514ffde0d420ca8bc0cc90faee287de012ec59bb506d6dd38a6fc9c860d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:51:53Z), 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/JPF702305401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be70c0a90cd79d9df6bc63d09bc87c3df2cacbe7737181b91c6212f9043b02f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPF702306401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93609a41b68fbeb7efb4a48ab50762d13b79d6548af918d32a39bf2c1a5ea35. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPF702400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959e83a39a9dc6e064458b6811d3af8f0679463e049b7783055513d1ac6e93d6. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/TCJPA2482008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d1a3247d2da72a1c99ee60291aae72439b671fec1628a02aa90ded7367124c. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCJPB2433468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4dcbf3de0d626b8ec0a664549b5cc607ccd852c3ac4ab2cccfbea1e46025daf. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/JP92N2528873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f47baff8f22369403ff527a4a3f4b5eded2ad0e5318b289d2c0da53e14dcd40. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JP92N2540090.