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 0x9db28ea885940138b80a870fef136182e8d446b14c6f0b80f6e5f23225d43ee6. 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/5f3ad0c1-558d-44cc-9910-803df6eec671.json and https://artists.proofprofile.net/proofs/artist/5f3ad0c1-558d-44cc-9910-803df6eec671.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 0x212429b3c7920cd6aa3fa32ba831f3f4c7f7a85ec2b30be38323562300128536. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USX9P1103668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17462e42a6f437f89bebe541a8bf9b39f84c9a447171d8d5db67176a92b0de4f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USX9P1103669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9080e4b82acd5396bc21692d32084553b4faa4710967c1921e2a38a7c39354. 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/USX9P1103670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57ca6261152d519f4e81eb3e20a7fdb2d58ba1299472c985001b257920b1438. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USX9P1103672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee213b7dfa3b1184b2c13c4f4fce7ee13c0da39cbe2a1a30749052696723d46. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USX9P1103674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ed2c34da5a6bc21f645c015ca8190d0d6da113179603fea3c884764fcdc8fb. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:24Z), 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/USX9P1103675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc45b90cb1f990476bc6b731c6e5aecccd808644a659c56def369fa39946814. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USHM91323278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b8ccfbea4c50688e3910974b099ba2dcbf02947680c5f64c47582933c835ae. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY41578350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd2cb5a32c3acc509c91d4503747a3491ca89977a630bd6f55f58697fe3d9aa. 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/USDY41578352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668282d44a774f5bffbe5a5ee1d5f18ff8d7b281d30d7ac2be1d32e8a79aaa36. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:50Z), 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/USDY41578357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6afa73721eb3c890fd381b19bc0f758e96d5162dc1d53dc36af2c74f729a90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDY41578359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94d57334ba5467e18260ee1ad542ff0c5415b22ef8571db720e3124838dba7b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDY41578360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f12dba68708353ea4e8488260a29e3f192c25aff87031682f8ec2da3f11529. 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/USLZJ2124366.