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 0x45ad47dfb561e095f72e9f3c867944d68c513367968b7abd984625b0b53df87e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69da327a-783a-4462-b68e-f3118aa567de.json and https://artists.proofprofile.net/proofs/artist/69da327a-783a-4462-b68e-f3118aa567de.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 0x97df750bd72951db23a2e9505cb5e60132c8ed5c61af5cf8a1a68afd4795e8c8. 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/CH7812198580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ace679c852838833c93a49c0e22805310b4427c5685943432bc44b0c8ea282. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEMN91300078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940e5d9598c8ed8407e23ce7bc074ac54cd8bbccc79dbe544e066a5e19258e4c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEMN91300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef38035a1e2826c2b2428df1301b3359316fc1ad6e29f9444f3cc7567ea431ff. 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/DEMN91600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a8f3e18a8a354c1e6ea704abb2c96dc3d17d919a2058df71257ee7068b645d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEMN91600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f856f8c44b482681bcaec61f45cb4383011c4e0025dd8b63277bae6058efae. 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/DEMN91600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979fb2a44b79befd4d08dc3175bfb340ae006270a845191cef393b68fac7f475. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEMN91600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eba90861cfde456b95e0bb4b603ac1c37a1bed97a67aa26e161b5fe2dc5daf1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FRX201700312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7388a3aa04f75db4e7be35b290eff0fe0a8b3523f1258148fa03047e174a75d. 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/FRX201700320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9381a3942056c51c8d5499bd1669bdb86586d358ed8fd852b5b5a59a8d37cd5. 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/FRX201700321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ccdaf799517e0af438ea34092f5a03080d94668b8a4b97e55dc73bc2155e8c. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEZ901700793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deab0e762c28e0212264df0bb3128ed84cb60920c19bcbb1378fa911b768216. 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/DEZC62495887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640d1e13beb3d374ca4c54dfded050efaff8e4e3a18839d8a88dfcfd31a9336. 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/DEMN91400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5afd13adad7da05799d75f5fc6d7d2cea2319fd73b7dfea715c54e09ed78dd. 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/DEUM71800266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4750fce96f4a77d1a575b1ceb7f4e923972a8c3ecff30dc6367f7c9d5895d1f0. 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/DEMN91500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d2e4ea2673d458203f1233b95fc12d312793a082139257dd2062ab1de31440. 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/DEMN91300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c602ae1c6bef34f021ab99c7da09dc2ad6862a69c9b8706b09d920b75ec04f. 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/DEMN91300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d2e4ea2673d458203f1233b95fc12d312793a082139257dd2062ab1de31440. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEMN91300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f6c7331424d9b9227ef3df3bde2b6808fba25fba9a06d04ca3deedd340836f. 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/DEMN91100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3dca70376e956d4771953c912fe37ccb4518fe7fff4d38661515e2644cd2fb. 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/DEMN91300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3dca70376e956d4771953c912fe37ccb4518fe7fff4d38661515e2644cd2fb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEMN91300115.