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 0xc1cc12c94f5665f5ae1d3ecde0d779afd0f6ef27f4e8eba2a31035c82939165c. 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/868951ee-71dd-484c-84cc-fdca585252ad.json and https://artists.proofprofile.net/proofs/artist/868951ee-71dd-484c-84cc-fdca585252ad.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 0x0a6e8cf705ea7d2bcf0ef73a15285d437858e607c2a1064ac196c47520b60593. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:59:46Z), 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/USAT22007505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b53c09992d82c9743d6907326a7d24c63dd0e10b54b6465681d6e3cf6509e82. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:05:50Z), 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/USAT22201691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecb50619b04192374592861b5bf12b1f68ccccbaddc878d4d86b645dd0b7e25. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT22203064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef565cc825235a86cd08b3e3193d926a4d0aa1ee1a88086b5a7fbac30d54347a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USAT22203045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10352bfb5362968ccfa0e443161a729f0771651db48fe02aaab3531e6177ec9a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USAT22202483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccf2f269c6b52de37d5c00f69892ff7e32c7d8a4da16f6d73ebc9f15b9b655d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USAT22203065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ffe9c1d304bc148a2d24ac1322ac11535ced95062560042662e21c1980e749. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT22105105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ccdadac1021cc56e9ca247425c8c2f30d69632366cc6a8af20dc7098f25ded. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USAT22203048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26276cee34c6b2b17bfa9a2f3afd562d1d7196cd3716788b95e786819bc39d5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAT22220816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6e8cf705ea7d2bcf0ef73a15285d437858e607c2a1064ac196c47520b60593. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USAT22007505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ffe9c1d304bc148a2d24ac1322ac11535ced95062560042662e21c1980e749. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT22105105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef565cc825235a86cd08b3e3193d926a4d0aa1ee1a88086b5a7fbac30d54347a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USAT22203045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afe1a00582e677504663f227413c84db2adc3dc3deb2e703382008016e9a1c5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT22302518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bdaa03d43b247a80e02d403f0560df615bea28ef0e6164d8dad15a13cb4f18. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USAT22219631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97853949dce3676723809113de51fd37d9cd384c18c786633d744d34360b242. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USAT22302521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bdaa03d43b247a80e02d403f0560df615bea28ef0e6164d8dad15a13cb4f18. 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/USAT22219631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6473277f255ace7273cec02f451e74355548b3780f70517fff758336abb19600. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USUYG1708934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88395403c1eb5fca9353d96b6c68e3ed15303fda365105e9df585729767b5671. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USUYG1708936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0609dd40383910c922d4576694644b650627d3c43a04b8c0e5d67e9e175f698d. 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/USUYG1708938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bd18a80c689adca4408e3df73aebd84d494c04034dc35bf9618705123e208f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USUYG1708940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda707366ef60b282ca72b2300eff5cf5790a828f559464e331c393e05fe4f06. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USUYG1708941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af4996267aee771eb61b3550fdc435904ae53ef16f62525b017e64c13d857bf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1348133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1bc4ecc121198481a75cc3413f23ec7bda0e0945e254e69a5a21ad10325ade. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US38Y2312946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1bc4ecc121198481a75cc3413f23ec7bda0e0945e254e69a5a21ad10325ade. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US38Y2312946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0922b901b6847b656f135c82bd2529458dd6da469acfc05845716f43dfaeb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USUYG1711269.