1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf6c7221762fee44218f909117af15011174e6c36f48f387df16f748ee55353ba. 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/ffdacee7-fcd4-4f6d-ad0a-d193138e1883.json and https://artists.proofprofile.net/proofs/artist/ffdacee7-fcd4-4f6d-ad0a-d193138e1883.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 → block OTSBitcoinBlock must exist at that height 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 0x984c37b21bb6bcce3d9a8814f6bae5cb39d144331d68a0d717ca11e85065320f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZK6F2106587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984c37b21bb6bcce3d9a8814f6bae5cb39d144331d68a0d717ca11e85065320f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:47:35Z), 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/QZK6F2106587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d819c79b63a0e96129d3078f36b3436f3b428a72c6bcd67afea8ec1ab66205c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFYW2149590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe8b938c77f02bbb7dece39ecd851d19063b37694617adee535ccd5bb63fa03. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZDA82208729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5f165687848fd66485b15550035960722855a8edae1d2ee9db0e277577a935. 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/QZK6N2471590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1948b3618dbc48b559b0f5c45dfd6350bcfd723025bc7a7e45683bd49f456694. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTAZ2436603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efe6916febe6dc4998b29fdb99e591a0c9d58801231bb9bbfd0b8c07c53d2dd. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QT2VB2428336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65d2d6a3be9d5760cec9f77d17d5f72c1042fee2d56a711dd7e0407ad26deff. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT2VB2460867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8c01fea55212ee5fe4c42e83641144059dc3c91ec07a93b4b5e0621bdbf49f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QT3EY2454054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952515fad9b8fc6cf9dbf07d61b6dbe701a596daa4dac2222517269ee53eb417. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZPEW2519499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6317291c6adbe5a8ea9e3063e2196e613781fab1b8519bd8828da5f86253c91f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES92517108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c75fdcc67cf00e21a561860cf23c3efa9cc65ac416375ffcbb30fd3bd5b441. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QT4K52508049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fdefc0769cb5fcd5de931b9c608035cff3eb72fac95824dae2d719eac73276. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:05:17Z), 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/QT4K52561543.