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 0x7efb28a6b71989ee02f2edc61301a72ebd96f9567e378c2e1e7b761e86d3d706. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f353eb0e-e00e-43f2-b30d-72e7726edfd1.json and https://artists.proofprofile.net/proofs/artist/f353eb0e-e00e-43f2-b30d-72e7726edfd1.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 0x17736007d9c17a7adc7068219af7f195bae8a7f7e00afbe97199ca3585ba66d5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR43D2101231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c39a296d45f7b4cb51569df0f275775c5e7b317a2819ddd16b60938b13460f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR43D2101232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e90d26a186c6c2374b99629d07909776a20e0c89189f82205b0a6bc7bd62a1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR43D2101237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbab54e99ea745e3a4ff963d6437c4738747df71c00fc0526afbb987ede795a. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/FR43D2101238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff7ba7d6f66b373c72f6fb9a43ef0baad548bcc5bf868f54920f4aeb3f9df7. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:22:24Z), 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/FR43D2101240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a073d9383054068110fdbe8db49baa628846cdd71a30ea45b75da541febe4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FRIDO2211042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd43c02cd6a2c61a80c9160db53658b21f9123cadfee48c65d180f8698434b0e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:08:56Z), 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/FRIDO2211047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781ca600dbf14f37042c84b971586bcd7a1d96e5cdda600be8c81588fa323328. 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/FRIDO2211049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ec5b1ac8ffa681b48da615ca697de5c9ecd2bf30a4069c4eae2ca887510ba. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRE7T2200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959f093f103ebf45542d17f2cde157fdd7d449f1c4920a9b1fc299ba06922fe1. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:09:34Z), 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/FRE7T2200900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a06041fe49c68d2e984791a6209be1a100dc3457c2b1a83119f0cf74d687be. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FRE7T2200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67996456cdeaa80cb98b03bd2fbf9ef1e112233251381dfcdce97b470d5abb5. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:47:22Z), 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/FRE7T2200930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ddafbe27e639476b82a4413b39b5a4e7cf703ef18cedfcc2fc6121bb26beda. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:47:16Z), 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/FRIDO2312867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b83ba1b5ab7fd949c9f8e2f3bf8edfbca169ff1689fb9f26d059c73592072a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:13:40Z), 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/FRIDO2312869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a45e0dbfca0116238259a89f348fcaf41774ed8d67a80c7b2582ab44cc3e89a. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/FRIDO2312872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dd86f5a0db6d054549c6f029d689e350d9371679cbde3553076a918480aaa5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:45Z), 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/FRIDO2312873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf198c7c0038c2faea236d5beae0aa35eae45111a30457c4e9ecf0c7ec43d449b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FRIDO2312874.